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Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS400]. The EBGP router paths between AS300 and AS400 include: Path 1 [B, G, C, O, P]

For Path 1 [B, G, C, O, P], since B is the source router, the route sent to G must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path1[B,K,A,C,O,P]

For Path 1 [B,K,A,C,O,P], since B is the source router, the route sent to K must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS800]. The EBGP router paths between AS100 and AS800 include: Path 1 [A,O,K,L,M,Q]

For Path 1 [A,O,K,L,M,Q], since A is the source router, the route sent to O must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, M and Q. Router M should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Q. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS200 to AS600]. The EBGP router paths between AS200 and AS600 include: Path 1 [BJ,DL,CS,SZ]

For Path 1 [BJ,DL,CS,SZ], since BJ is the source router, the route sent to DL must include a community tag representing its AS, which is 200:1 (default format AS number:any number). Then, address the last two routers in the path, CS and SZ. Router CS should filter all routes that have the same community number as previously set(200:1), and then block propagation in the export direction towards SZ. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.。

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS200]. The EBGP router paths between AS100 and AS200 include: Path 1 [Miami,LA,Toronto,Washington,NY]

For Path 1 [Miami,LA,Toronto,Washington,Boston,NY], since Miami is the source router, the route sent to LA must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Boston and NY. Router Boston should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards NY. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS100]. The EBGP router paths between AS300 and AS100 include: Path 1 [GS,Detroit,Charlotte,NO]

For Path 1 [GS,Detroit,Charlotte,NO], since GS is the source router, the route sent to Detroit must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, Charlotte and P. Router Charlotte should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards NO. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS800 to AS700]. The EBGP router paths between AS800 and AS700 include: Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston]

For Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston], since Chicago is the source router, the route sent to Houston must include a community tag representing its AS, which is 800:1 (default format AS number:any number). Then, address the last two routers in the path, Orlando and Boston. Router Orlando should filter all routes that have the same community number as previously set(800:1), and then block propagation in the export direction towards Boston. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS300]. The EBGP router paths between AS100 and AS300 include: Path 1 [Madrid,Espana,Barcelona,Sevilla]

For Path 1 [Madrid,Espana,Barcelona,Sevilla], since Madrid is the source router, the route sent to Espana must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Barcelona and Sevilla. Router Barcelona should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards Sevilla. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa]

For Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa], since Barcelona is the source router, the route sent to Bilbao must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, Milan and Pisa, Router Milan should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Pisa. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS900 to AS400]. The EBGP router paths between AS900 and AS400 include: Path 1 [Turin,Roman,Florence,Venice]

For Path 1 [Turin,Roman,Florence,Venice], since Turin is the source router, the route sent to Roman must include a community tag representing its AS, which is 900:1 (default format AS number:any number). Then, address the last two routers in the path, Florence and Venice. Router Florence should filter all routes that have the same community number as previously set(900:1), and then block propagation in the export direction towards Venice. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS400]. The EBGP router paths between AS300 and AS400 include: Path 1 [B, G, C, O, P]

For Path 1 [B, G, C, O, P], since B is the source router, the route sent to G must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path1[B,K,A,C,O,P]

For Path 1 [B,K,A,C,O,P], since B is the source router, the route sent to K must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS800]. The EBGP router paths between AS100 and AS800 include: Path 1 [A,O,K,L,M,Q]

For Path 1 [A,O,K,L,M,Q], since A is the source router, the route sent to O must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, M and Q. Router M should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Q. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS200 to AS600]. The EBGP router paths between AS200 and AS600 include: Path 1 [BJ,DL,CS,SZ]

For Path 1 [BJ,DL,CS,SZ], since BJ is the source router, the route sent to DL must include a community tag representing its AS, which is 200:1 (default format AS number:any number). Then, address the last two routers in the path, CS and SZ. Router CS should filter all routes that have the same community number as previously set(200:1), and then block propagation in the export direction towards SZ. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.。

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS200]. The EBGP router paths between AS100 and AS200 include: Path 1 [Miami,LA,Toronto,Washington,NY]

For Path 1 [Miami,LA,Toronto,Washington,Boston,NY], since Miami is the source router, the route sent to LA must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Boston and NY. Router Boston should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards NY. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS100]. The EBGP router paths between AS300 and AS100 include: Path 1 [GS,Detroit,Charlotte,NO]

For Path 1 [GS,Detroit,Charlotte,NO], since GS is the source router, the route sent to Detroit must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, Charlotte and P. Router Charlotte should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards NO. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS800 to AS700]. The EBGP router paths between AS800 and AS700 include: Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston]

For Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston], since Chicago is the source router, the route sent to Houston must include a community tag representing its AS, which is 800:1 (default format AS number:any number). Then, address the last two routers in the path, Orlando and Boston. Router Orlando should filter all routes that have the same community number as previously set(800:1), and then block propagation in the export direction towards Boston. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS300]. The EBGP router paths between AS100 and AS300 include: Path 1 [Madrid,Espana,Barcelona,Sevilla]

For Path 1 [Madrid,Espana,Barcelona,Sevilla], since Madrid is the source router, the route sent to Espana must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Barcelona and Sevilla. Router Barcelona should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards Sevilla. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa]

For Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa], since Barcelona is the source router, the route sent to Bilbao must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, Milan and Pisa, Router Milan should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Pisa. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS900 to AS400]. The EBGP router paths between AS900 and AS400 include: Path 1 [Turin,Roman,Florence,Venice]

For Path 1 [Turin,Roman,Florence,Venice], since Turin is the source router, the route sent to Roman must include a community tag representing its AS, which is 900:1 (default format AS number:any number). Then, address the last two routers in the path, Florence and Venice. Router Florence should filter all routes that have the same community number as previously set(900:1), and then block propagation in the export direction towards Venice. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS400]. The EBGP router paths between AS300 and AS400 include: Path 1 [B, G, C, O, P]

For Path 1 [B, G, C, O, P], since B is the source router, the route sent to G must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path1[B,K,A,C,O,P]

For Path 1 [B,K,A,C,O,P], since B is the source router, the route sent to K must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS800]. The EBGP router paths between AS100 and AS800 include: Path 1 [A,O,K,L,M,Q]

For Path 1 [A,O,K,L,M,Q], since A is the source router, the route sent to O must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, M and Q. Router M should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Q. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS200 to AS600]. The EBGP router paths between AS200 and AS600 include: Path 1 [BJ,DL,CS,SZ]

For Path 1 [BJ,DL,CS,SZ], since BJ is the source router, the route sent to DL must include a community tag representing its AS, which is 200:1 (default format AS number:any number). Then, address the last two routers in the path, CS and SZ. Router CS should filter all routes that have the same community number as previously set(200:1), and then block propagation in the export direction towards SZ. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.。

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS200]. The EBGP router paths between AS100 and AS200 include: Path 1 [Miami,LA,Toronto,Washington,NY]

For Path 1 [Miami,LA,Toronto,Washington,Boston,NY], since Miami is the source router, the route sent to LA must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Boston and NY. Router Boston should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards NY. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS100]. The EBGP router paths between AS300 and AS100 include: Path 1 [GS,Detroit,Charlotte,NO]

For Path 1 [GS,Detroit,Charlotte,NO], since GS is the source router, the route sent to Detroit must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, Charlotte and P. Router Charlotte should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards NO. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS800 to AS700]. The EBGP router paths between AS800 and AS700 include: Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston]

For Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston], since Chicago is the source router, the route sent to Houston must include a community tag representing its AS, which is 800:1 (default format AS number:any number). Then, address the last two routers in the path, Orlando and Boston. Router Orlando should filter all routes that have the same community number as previously set(800:1), and then block propagation in the export direction towards Boston. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS300]. The EBGP router paths between AS100 and AS300 include: Path 1 [Madrid,Espana,Barcelona,Sevilla]

For Path 1 [Madrid,Espana,Barcelona,Sevilla], since Madrid is the source router, the route sent to Espana must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Barcelona and Sevilla. Router Barcelona should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards Sevilla. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa]

For Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa], since Barcelona is the source router, the route sent to Bilbao must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, Milan and Pisa, Router Milan should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Pisa. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS900 to AS400]. The EBGP router paths between AS900 and AS400 include: Path 1 [Turin,Roman,Florence,Venice]

For Path 1 [Turin,Roman,Florence,Venice], since Turin is the source router, the route sent to Roman must include a community tag representing its AS, which is 900:1 (default format AS number:any number). Then, address the last two routers in the path, Florence and Venice. Router Florence should filter all routes that have the same community number as previously set(900:1), and then block propagation in the export direction towards Venice. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS400]. The EBGP router paths between AS300 and AS400 include: Path 1 [B, G, C, O, P]

For Path 1 [B, G, C, O, P], since B is the source router, the route sent to G must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path1[B,K,A,C,O,P]

For Path 1 [B,K,A,C,O,P], since B is the source router, the route sent to K must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS800]. The EBGP router paths between AS100 and AS800 include: Path 1 [A,O,K,L,M,Q]

For Path 1 [A,O,K,L,M,Q], since A is the source router, the route sent to O must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, M and Q. Router M should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Q. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS200 to AS600]. The EBGP router paths between AS200 and AS600 include: Path 1 [BJ,DL,CS,SZ]

For Path 1 [BJ,DL,CS,SZ], since BJ is the source router, the route sent to DL must include a community tag representing its AS, which is 200:1 (default format AS number:any number). Then, address the last two routers in the path, CS and SZ. Router CS should filter all routes that have the same community number as previously set(200:1), and then block propagation in the export direction towards SZ. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.。

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS200]. The EBGP router paths between AS100 and AS200 include: Path 1 [Miami,LA,Toronto,Washington,NY]

For Path 1 [Miami,LA,Toronto,Washington,Boston,NY], since Miami is the source router, the route sent to LA must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Boston and NY. Router Boston should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards NY. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS100]. The EBGP router paths between AS300 and AS100 include: Path 1 [GS,Detroit,Charlotte,NO]

For Path 1 [GS,Detroit,Charlotte,NO], since GS is the source router, the route sent to Detroit must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, Charlotte and P. Router Charlotte should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards NO. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS800 to AS700]. The EBGP router paths between AS800 and AS700 include: Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston]

For Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston], since Chicago is the source router, the route sent to Houston must include a community tag representing its AS, which is 800:1 (default format AS number:any number). Then, address the last two routers in the path, Orlando and Boston. Router Orlando should filter all routes that have the same community number as previously set(800:1), and then block propagation in the export direction towards Boston. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS300]. The EBGP router paths between AS100 and AS300 include: Path 1 [Madrid,Espana,Barcelona,Sevilla]

For Path 1 [Madrid,Espana,Barcelona,Sevilla], since Madrid is the source router, the route sent to Espana must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Barcelona and Sevilla. Router Barcelona should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards Sevilla. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa]

For Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa], since Barcelona is the source router, the route sent to Bilbao must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, Milan and Pisa, Router Milan should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Pisa. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS900 to AS400]. The EBGP router paths between AS900 and AS400 include: Path 1 [Turin,Roman,Florence,Venice]

For Path 1 [Turin,Roman,Florence,Venice], since Turin is the source router, the route sent to Roman must include a community tag representing its AS, which is 900:1 (default format AS number:any number). Then, address the last two routers in the path, Florence and Venice. Router Florence should filter all routes that have the same community number as previously set(900:1), and then block propagation in the export direction towards Venice. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS400]. The EBGP router paths between AS300 and AS400 include: Path 1 [B, G, C, O, P]

For Path 1 [B, G, C, O, P], since B is the source router, the route sent to G must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path1[B,K,A,C,O,P]

For Path 1 [B,K,A,C,O,P], since B is the source router, the route sent to K must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS800]. The EBGP router paths between AS100 and AS800 include: Path 1 [A,O,K,L,M,Q]

For Path 1 [A,O,K,L,M,Q], since A is the source router, the route sent to O must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, M and Q. Router M should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Q. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS200 to AS600]. The EBGP router paths between AS200 and AS600 include: Path 1 [BJ,DL,CS,SZ]

For Path 1 [BJ,DL,CS,SZ], since BJ is the source router, the route sent to DL must include a community tag representing its AS, which is 200:1 (default format AS number:any number). Then, address the last two routers in the path, CS and SZ. Router CS should filter all routes that have the same community number as previously set(200:1), and then block propagation in the export direction towards SZ. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.。

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS200]. The EBGP router paths between AS100 and AS200 include: Path 1 [Miami,LA,Toronto,Washington,NY]

For Path 1 [Miami,LA,Toronto,Washington,Boston,NY], since Miami is the source router, the route sent to LA must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Boston and NY. Router Boston should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards NY. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS100]. The EBGP router paths between AS300 and AS100 include: Path 1 [GS,Detroit,Charlotte,NO]

For Path 1 [GS,Detroit,Charlotte,NO], since GS is the source router, the route sent to Detroit must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, Charlotte and P. Router Charlotte should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards NO. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS800 to AS700]. The EBGP router paths between AS800 and AS700 include: Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston]

For Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston], since Chicago is the source router, the route sent to Houston must include a community tag representing its AS, which is 800:1 (default format AS number:any number). Then, address the last two routers in the path, Orlando and Boston. Router Orlando should filter all routes that have the same community number as previously set(800:1), and then block propagation in the export direction towards Boston. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS300]. The EBGP router paths between AS100 and AS300 include: Path 1 [Madrid,Espana,Barcelona,Sevilla]

For Path 1 [Madrid,Espana,Barcelona,Sevilla], since Madrid is the source router, the route sent to Espana must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Barcelona and Sevilla. Router Barcelona should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards Sevilla. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa]

For Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa], since Barcelona is the source router, the route sent to Bilbao must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, Milan and Pisa, Router Milan should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Pisa. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS900 to AS400]. The EBGP router paths between AS900 and AS400 include: Path 1 [Turin,Roman,Florence,Venice]

For Path 1 [Turin,Roman,Florence,Venice], since Turin is the source router, the route sent to Roman must include a community tag representing its AS, which is 900:1 (default format AS number:any number). Then, address the last two routers in the path, Florence and Venice. Router Florence should filter all routes that have the same community number as previously set(900:1), and then block propagation in the export direction towards Venice. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS400]. The EBGP router paths between AS300 and AS400 include: Path 1 [B, G, C, O, P]

For Path 1 [B, G, C, O, P], since B is the source router, the route sent to G must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path1[B,K,A,C,O,P]

For Path 1 [B,K,A,C,O,P], since B is the source router, the route sent to K must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS800]. The EBGP router paths between AS100 and AS800 include: Path 1 [A,O,K,L,M,Q]

For Path 1 [A,O,K,L,M,Q], since A is the source router, the route sent to O must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, M and Q. Router M should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Q. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS200 to AS600]. The EBGP router paths between AS200 and AS600 include: Path 1 [BJ,DL,CS,SZ]

For Path 1 [BJ,DL,CS,SZ], since BJ is the source router, the route sent to DL must include a community tag representing its AS, which is 200:1 (default format AS number:any number). Then, address the last two routers in the path, CS and SZ. Router CS should filter all routes that have the same community number as previously set(200:1), and then block propagation in the export direction towards SZ. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.。

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS200]. The EBGP router paths between AS100 and AS200 include: Path 1 [Miami,LA,Toronto,Washington,NY]

For Path 1 [Miami,LA,Toronto,Washington,Boston,NY], since Miami is the source router, the route sent to LA must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Boston and NY. Router Boston should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards NY. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS100]. The EBGP router paths between AS300 and AS100 include: Path 1 [GS,Detroit,Charlotte,NO]

For Path 1 [GS,Detroit,Charlotte,NO], since GS is the source router, the route sent to Detroit must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, Charlotte and P. Router Charlotte should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards NO. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS800 to AS700]. The EBGP router paths between AS800 and AS700 include: Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston]

For Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston], since Chicago is the source router, the route sent to Houston must include a community tag representing its AS, which is 800:1 (default format AS number:any number). Then, address the last two routers in the path, Orlando and Boston. Router Orlando should filter all routes that have the same community number as previously set(800:1), and then block propagation in the export direction towards Boston. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS300]. The EBGP router paths between AS100 and AS300 include: Path 1 [Madrid,Espana,Barcelona,Sevilla]

For Path 1 [Madrid,Espana,Barcelona,Sevilla], since Madrid is the source router, the route sent to Espana must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Barcelona and Sevilla. Router Barcelona should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards Sevilla. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa]

For Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa], since Barcelona is the source router, the route sent to Bilbao must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, Milan and Pisa, Router Milan should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Pisa. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS900 to AS400]. The EBGP router paths between AS900 and AS400 include: Path 1 [Turin,Roman,Florence,Venice]

For Path 1 [Turin,Roman,Florence,Venice], since Turin is the source router, the route sent to Roman must include a community tag representing its AS, which is 900:1 (default format AS number:any number). Then, address the last two routers in the path, Florence and Venice. Router Florence should filter all routes that have the same community number as previously set(900:1), and then block propagation in the export direction towards Venice. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS400]. The EBGP router paths between AS300 and AS400 include: Path 1 [B, G, C, O, P]

For Path 1 [B, G, C, O, P], since B is the source router, the route sent to G must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path1[B,K,A,C,O,P]

For Path 1 [B,K,A,C,O,P], since B is the source router, the route sent to K must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS800]. The EBGP router paths between AS100 and AS800 include: Path 1 [A,O,K,L,M,Q]

For Path 1 [A,O,K,L,M,Q], since A is the source router, the route sent to O must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, M and Q. Router M should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Q. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS200 to AS600]. The EBGP router paths between AS200 and AS600 include: Path 1 [BJ,DL,CS,SZ]

For Path 1 [BJ,DL,CS,SZ], since BJ is the source router, the route sent to DL must include a community tag representing its AS, which is 200:1 (default format AS number:any number). Then, address the last two routers in the path, CS and SZ. Router CS should filter all routes that have the same community number as previously set(200:1), and then block propagation in the export direction towards SZ. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.。

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS200]. The EBGP router paths between AS100 and AS200 include: Path 1 [Miami,LA,Toronto,Washington,NY]

For Path 1 [Miami,LA,Toronto,Washington,Boston,NY], since Miami is the source router, the route sent to LA must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Boston and NY. Router Boston should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards NY. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS100]. The EBGP router paths between AS300 and AS100 include: Path 1 [GS,Detroit,Charlotte,NO]

For Path 1 [GS,Detroit,Charlotte,NO], since GS is the source router, the route sent to Detroit must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, Charlotte and P. Router Charlotte should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards NO. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS800 to AS700]. The EBGP router paths between AS800 and AS700 include: Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston]

For Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston], since Chicago is the source router, the route sent to Houston must include a community tag representing its AS, which is 800:1 (default format AS number:any number). Then, address the last two routers in the path, Orlando and Boston. Router Orlando should filter all routes that have the same community number as previously set(800:1), and then block propagation in the export direction towards Boston. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS300]. The EBGP router paths between AS100 and AS300 include: Path 1 [Madrid,Espana,Barcelona,Sevilla]

For Path 1 [Madrid,Espana,Barcelona,Sevilla], since Madrid is the source router, the route sent to Espana must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Barcelona and Sevilla. Router Barcelona should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards Sevilla. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa]

For Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa], since Barcelona is the source router, the route sent to Bilbao must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, Milan and Pisa, Router Milan should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Pisa. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS900 to AS400]. The EBGP router paths between AS900 and AS400 include: Path 1 [Turin,Roman,Florence,Venice]

For Path 1 [Turin,Roman,Florence,Venice], since Turin is the source router, the route sent to Roman must include a community tag representing its AS, which is 900:1 (default format AS number:any number). Then, address the last two routers in the path, Florence and Venice. Router Florence should filter all routes that have the same community number as previously set(900:1), and then block propagation in the export direction towards Venice. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS400]. The EBGP router paths between AS300 and AS400 include: Path 1 [B, G, C, O, P]

For Path 1 [B, G, C, O, P], since B is the source router, the route sent to G must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path1[B,K,A,C,O,P]

For Path 1 [B,K,A,C,O,P], since B is the source router, the route sent to K must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS800]. The EBGP router paths between AS100 and AS800 include: Path 1 [A,O,K,L,M,Q]

For Path 1 [A,O,K,L,M,Q], since A is the source router, the route sent to O must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, M and Q. Router M should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Q. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS200 to AS600]. The EBGP router paths between AS200 and AS600 include: Path 1 [BJ,DL,CS,SZ]

For Path 1 [BJ,DL,CS,SZ], since BJ is the source router, the route sent to DL must include a community tag representing its AS, which is 200:1 (default format AS number:any number). Then, address the last two routers in the path, CS and SZ. Router CS should filter all routes that have the same community number as previously set(200:1), and then block propagation in the export direction towards SZ. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.。

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS200]. The EBGP router paths between AS100 and AS200 include: Path 1 [Miami,LA,Toronto,Washington,NY]

For Path 1 [Miami,LA,Toronto,Washington,Boston,NY], since Miami is the source router, the route sent to LA must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Boston and NY. Router Boston should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards NY. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS100]. The EBGP router paths between AS300 and AS100 include: Path 1 [GS,Detroit,Charlotte,NO]

For Path 1 [GS,Detroit,Charlotte,NO], since GS is the source router, the route sent to Detroit must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, Charlotte and P. Router Charlotte should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards NO. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS800 to AS700]. The EBGP router paths between AS800 and AS700 include: Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston]

For Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston], since Chicago is the source router, the route sent to Houston must include a community tag representing its AS, which is 800:1 (default format AS number:any number). Then, address the last two routers in the path, Orlando and Boston. Router Orlando should filter all routes that have the same community number as previously set(800:1), and then block propagation in the export direction towards Boston. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS300]. The EBGP router paths between AS100 and AS300 include: Path 1 [Madrid,Espana,Barcelona,Sevilla]

For Path 1 [Madrid,Espana,Barcelona,Sevilla], since Madrid is the source router, the route sent to Espana must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Barcelona and Sevilla. Router Barcelona should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards Sevilla. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa]

For Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa], since Barcelona is the source router, the route sent to Bilbao must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, Milan and Pisa, Router Milan should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Pisa. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS900 to AS400]. The EBGP router paths between AS900 and AS400 include: Path 1 [Turin,Roman,Florence,Venice]

For Path 1 [Turin,Roman,Florence,Venice], since Turin is the source router, the route sent to Roman must include a community tag representing its AS, which is 900:1 (default format AS number:any number). Then, address the last two routers in the path, Florence and Venice. Router Florence should filter all routes that have the same community number as previously set(900:1), and then block propagation in the export direction towards Venice. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS400]. The EBGP router paths between AS300 and AS400 include: Path 1 [B, G, C, O, P]

For Path 1 [B, G, C, O, P], since B is the source router, the route sent to G must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path1[B,K,A,C,O,P]

For Path 1 [B,K,A,C,O,P], since B is the source router, the route sent to K must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS800]. The EBGP router paths between AS100 and AS800 include: Path 1 [A,O,K,L,M,Q]

For Path 1 [A,O,K,L,M,Q], since A is the source router, the route sent to O must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, M and Q. Router M should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Q. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS200 to AS600]. The EBGP router paths between AS200 and AS600 include: Path 1 [BJ,DL,CS,SZ]

For Path 1 [BJ,DL,CS,SZ], since BJ is the source router, the route sent to DL must include a community tag representing its AS, which is 200:1 (default format AS number:any number). Then, address the last two routers in the path, CS and SZ. Router CS should filter all routes that have the same community number as previously set(200:1), and then block propagation in the export direction towards SZ. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.。

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS200]. The EBGP router paths between AS100 and AS200 include: Path 1 [Miami,LA,Toronto,Washington,NY]

For Path 1 [Miami,LA,Toronto,Washington,Boston,NY], since Miami is the source router, the route sent to LA must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Boston and NY. Router Boston should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards NY. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS100]. The EBGP router paths between AS300 and AS100 include: Path 1 [GS,Detroit,Charlotte,NO]

For Path 1 [GS,Detroit,Charlotte,NO], since GS is the source router, the route sent to Detroit must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, Charlotte and P. Router Charlotte should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards NO. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS800 to AS700]. The EBGP router paths between AS800 and AS700 include: Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston]

For Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston], since Chicago is the source router, the route sent to Houston must include a community tag representing its AS, which is 800:1 (default format AS number:any number). Then, address the last two routers in the path, Orlando and Boston. Router Orlando should filter all routes that have the same community number as previously set(800:1), and then block propagation in the export direction towards Boston. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS300]. The EBGP router paths between AS100 and AS300 include: Path 1 [Madrid,Espana,Barcelona,Sevilla]

For Path 1 [Madrid,Espana,Barcelona,Sevilla], since Madrid is the source router, the route sent to Espana must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Barcelona and Sevilla. Router Barcelona should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards Sevilla. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa]

For Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa], since Barcelona is the source router, the route sent to Bilbao must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, Milan and Pisa, Router Milan should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Pisa. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS900 to AS400]. The EBGP router paths between AS900 and AS400 include: Path 1 [Turin,Roman,Florence,Venice]

For Path 1 [Turin,Roman,Florence,Venice], since Turin is the source router, the route sent to Roman must include a community tag representing its AS, which is 900:1 (default format AS number:any number). Then, address the last two routers in the path, Florence and Venice. Router Florence should filter all routes that have the same community number as previously set(900:1), and then block propagation in the export direction towards Venice. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS400]. The EBGP router paths between AS300 and AS400 include: Path 1 [B, G, C, O, P]

For Path 1 [B, G, C, O, P], since B is the source router, the route sent to G must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path1[B,K,A,C,O,P]

For Path 1 [B,K,A,C,O,P], since B is the source router, the route sent to K must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, O and P. Router O should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards P. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS800]. The EBGP router paths between AS100 and AS800 include: Path 1 [A,O,K,L,M,Q]

For Path 1 [A,O,K,L,M,Q], since A is the source router, the route sent to O must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, M and Q. Router M should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Q. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS200 to AS600]. The EBGP router paths between AS200 and AS600 include: Path 1 [BJ,DL,CS,SZ]

For Path 1 [BJ,DL,CS,SZ], since BJ is the source router, the route sent to DL must include a community tag representing its AS, which is 200:1 (default format AS number:any number). Then, address the last two routers in the path, CS and SZ. Router CS should filter all routes that have the same community number as previously set(200:1), and then block propagation in the export direction towards SZ. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.。

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS200]. The EBGP router paths between AS100 and AS200 include: Path 1 [Miami,LA,Toronto,Washington,NY]

For Path 1 [Miami,LA,Toronto,Washington,Boston,NY], since Miami is the source router, the route sent to LA must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Boston and NY. Router Boston should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards NY. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS300 to AS100]. The EBGP router paths between AS300 and AS100 include: Path 1 [GS,Detroit,Charlotte,NO]

For Path 1 [GS,Detroit,Charlotte,NO], since GS is the source router, the route sent to Detroit must include a community tag representing its AS, which is 300:1 (default format AS number:any number). Then, address the last two routers in the path, Charlotte and P. Router Charlotte should filter all routes that have the same community number as previously set(300:1), and then block propagation in the export direction towards NO. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS800 to AS700]. The EBGP router paths between AS800 and AS700 include: Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston]

For Path 1 [Chicago,Houston,Cleveland,NY,Orlando,Boston], since Chicago is the source router, the route sent to Houston must include a community tag representing its AS, which is 800:1 (default format AS number:any number). Then, address the last two routers in the path, Orlando and Boston. Router Orlando should filter all routes that have the same community number as previously set(800:1), and then block propagation in the export direction towards Boston. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS100 to AS300]. The EBGP router paths between AS100 and AS300 include: Path 1 [Madrid,Espana,Barcelona,Sevilla]

For Path 1 [Madrid,Espana,Barcelona,Sevilla], since Madrid is the source router, the route sent to Espana must include a community tag representing its AS, which is 100:1 (default format AS number:any number). Then, address the last two routers in the path, Barcelona and Sevilla. Router Barcelona should filter all routes that have the same community number as previously set(100:1), and then block propagation in the export direction towards Sevilla. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS400 to AS200]. The EBGP router paths between AS400 and AS200 include: Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa]

For Path 1 [Barcelona,Bilbao,Valencia,Aragon,Milan,Pisa], since Barcelona is the source router, the route sent to Bilbao must include a community tag representing its AS, which is 400:1 (default format AS number:any number). Then, address the last two routers in the path, Milan and Pisa, Router Milan should filter all routes that have the same community number as previously set(400:1), and then block propagation in the export direction towards Pisa. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.

Based on the data I provided, please decompose the task of [using community tags to prevent route propagation from AS900 to AS400]. The EBGP router paths between AS900 and AS400 include: Path 1 [Turin,Roman,Florence,Venice]

For Path 1 [Turin,Roman,Florence,Venice], since Turin is the source router, the route sent to Roman must include a community tag representing its AS, which is 900:1 (default format AS number:any number). Then, address the last two routers in the path, Florence and Venice. Router Florence should filter all routes that have the same community number as previously set(900:1), and then block propagation in the export direction towards Venice. It is also important to note that routers along the path should add an advertise-community tag to the routers following them.