Appendix 18. Response to NACCS Failure andRecovery(For Users Not Using NACCS DNS)Appendix 18-1 Response to NACCS Failure and Recovery(For Users Not Using NACCS DNS)

18.1.1 Response to NACCS failure
In the event of a NACCS failure, each user who cannot use the DNS server provided by theNACCS Center must either "change the setting of the currently specified destination IP address","change the setting of the configuration file of another currently used DNS server", or "changethe setting of the IP address to the hosts file of the terminal where the packaged software isinstalled".
Table 18.1.1 shows the failure categories, target processing modes, and response methods
that require setting method change. Users who fall under the target Processing Mode describedin Appendix Table 18.1.1 need to prepare in advance so that the response described in theresponse method can be promptly implemented in the event of a f ailure indicated in the failurecategory.
Appendix Table 18.1.1 Response to NACCS failure
Failure category
Main center failure(Note 1)

Target Processing Mode

Response method

Interactive Processing mode (SMTPtwo-way)

Change the settings of the currently
specified destination IP address.

E-mail style processing mode

Change the settings of the currently
specified destination IP address.

Packaged Software(Interactive Processing mode)

Change the IP address settings to thesettings file of another DNS server
currently in use or the hosts file of theterminal where the packaged softwareis installed.

NACCS Network node failure(Note 2)

(Note 1) A failure of the Main center refers to the time when the NACCS system is difficult tooperate at the Main center and switched to the Backup center.
(Note 2) NACCS Network node failure refers to the time when a route switching device configuredin the NACCS Network has a failure.

Appendix 18-1-1

(1) Main center failure
In the event of Main center failure, users who use the interactive processing mode (SMTPtwo-way) shall change the destination IP address. This destination IP address indicates thedestination IP address of the message (inbound message) sent from the user side system toNACCS. The destination IP address is as follows:[Destination IP address for inbound messages for Main center failure]
10.6.49.13
Users who fall under this section should set up their communication devices, etc. in advance,as necessary, so that communication with the above mentioned destination IP address become
possible.
In the event of Main center failure, the source IP address of the message sent from NACCS
to the user side system (outbound message) is as follows. Users who use the interactive
processing mode (SMTP two-way) should set the communication device on the user side inadvance to receive packets from these IP addresses as necessary.
[Source IP address for outbound messages in the cases of Main center failure]
10.6.54.1
10.6.54.2(2) NACCS Network node failure (e-mail processing mode)
In the event of NACCS Network node failure, users who use the interactive e -mail processing
mode shall change the destination IP address. The destination IP address is as follows:[Destination IP address in Main center failure]10.1.129.14
Users who fall under this section should set up their communication devices, etc. in advance,as necessary, so that communication with the above mentioned destination IP address become
possible.

(3) NACCS network node failure (packaged software (interactive processing mode))In the event of NACCS Network node failure, users who use packaged software (interactiveprocessing mode) shall change the settings of the destination IP address for the destination
domain name as shown in Appendix 18.1.3. For the method of changing the setting, refer to thecorresponding method column in Appendix 18.1.1. Users who fall under this section should set
up their communication devices as necessary, so that communication with the destination IP
address shown in Appendix Table 18.1.3 become possible. As for the destination domain name,the same domain name as in normal operation will be used continuously, so th ere is no need tochange the settings.

Appendix 18-1-2

Appendix Table 18.1.3 Destination domain name and destination IP address at the time of NACCS
Network node failure
Destination domain nameDestination IP address

http.prod.naccs6

10.1.129.11

kanri.prod.naccs6

10.1.129.12

portps.prod.naccs6

10.1.129.17

bbs.prod.naccs6

10.1.135.100

This response is required only for users who do not use the NACCS DNS server, and it is notnecessary for users who use the NACCS DNS server.

18.1.2 Response to NACCS failure (when using the procedure to retrieveManagement Document Information)
For each user who cannot use the DNS server provided by the NACCS Center, the destination
IP address shall be changed when the NACCS Network node fails in the case of using the user
system and using the procedure to retrieve Management Document Information. The destination
IP address is as follows:[NACCS Network Node Failure Destination IP Address]
10.1.129.12
Users who fall under this section should set up their communication devices, etc. in advance,as necessary, so that communication with the above mentioned destination IP address become
possible.

18.1.3 Response to NACCS recovery
For each user who implemented the response described in "18.1.1 Response to NACCS
failure" in the event of NACCS failure, it is necessary to return back to the normal setting after
NACCS is recovered. The response methods are as follows.
(1) When Main center is recovered
In the event of Main center recovery, users who use the interactive processing mode (SMTPtwo-way) shall change the destination IP address. This destination IP address indicates thedestination IP address of the message (inbound message) sent from the user side system toNACCS. The destination IP address is as follows:[Destination IP address for inbound messages for Main center recovery]
10.5.49.13

Appendix 18-1-3

Users who fall under this section should set up their communication devices, etc. in advance,as necessary, so that communication with the above mentioned destination IP address becomepossible.
In the event of Main center recovery, the source IP address of the message sent from NACCS
to the user side system (outbound message) is as follows. Users who use the interactive
processing mode (SMTP two-way) should set the communication device on the user side inadvance to receive packets from these IP addresses as necessary.
[Source IP address for outbound messages in the cases of Main center recovery]
10.5.54.1
10.5.54.2
10.5.54.3(2) NACCS network node recovery (e-mail Processing Mode)In the event of NACCS Network node recovery, users who use the interactive e-mailprocessing mode shall change the destination IP address. The destination IP address is asfollows:[Destination IP Address for Main center recovery]
10.1.1.14
Users who fall under this section should set up their communication devices, etc. in advance,as necessary, so that communication with the above mentioned destination IP address become
possible.

(3) NACCS Network node recovery (packaged software (interactive processing method))
In the event of NACCS Network node recovery, users who use packaged software (interactiveprocessing mode) shall change the settings of the destination IP address for the destination
domain name as shown in Appendix 18.1.4. For the method of changing the setting, refer to thecorresponding method column in Appendix 18.1.1 because the method is the same as one forthe failure. Users who fall under this section should set up their communication devices asnecessary, so that communication with the destination IP address shown in Appendix Table
18.1.4 become possible. As for the destination domain name, the same domain name as innormal operation will be used continuously, so there is no need to change the settings.
Appendix Table 18.1.4 Destination domain name and destination IP address at the time of NACCS
Network node recovery
Destination domain name

Destination IP address

http.prod.naccs6

10.1.1.11

kanri.prod.naccs6

10.1.1.12

portps.prod.naccs6

10.1.1.17

bbs.prod.naccs6

10.1.7.100

This response is required only for users who do not use the NACCS DNS server, and it is notnecessary for users who use the NACCS DNS server.
Appendix 18-1-4

18.1.4 Response to NACCS recovery (when using the procedure to retrieve
Management Document Information)
For each user who cannot use the DNS server provided by the NACCS Center, the destination
IP address shall be changed when the NACCS Network node recovers in the case of using theuser system and using the procedure to retrieve Management Document Information. Thedestination IP address is as follows:[NACCS Network Node Recovery Destination IP Address]
10.1.1.12
Users who fall under this section should set up their communication devices, etc. in advance,as necessary, so that communication with the above mentioned destination IP address become
possible.

Appendix 18-1-5