From: JIMWW@SACUSR.MP.USBR.GOV
Subject: Re: 39461 - DECnet Phase IV to Phase V redistrobution
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Date: 16 Nov 1992 07:54:22 PST
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> Jim
> 
> >> Howdy,
> 
> >>   I am having problems with DECnet Phase IV to V address distrobution.
> 
> >> We have an IGS connected to an AGS with a 56kb serial link. Both routers are in 
> >> the same area (12) with other decnet nodes some of which are remote through 
> >> a DECnet router, off of the respective ethernets.
> 
> >>AGS config:
> >>
> >>decnet routing 12.253
> >>decnet node-type area
> >>clns routing
> >>clns router igrp MP NET 47.0005.80.0600.0000.00.0000.000c.aa00.0400.fd30.00
> >>decnet conversion igrp MP
> 
> First thing to note is that the parameter passed to the "decnet conversion"
> configuration command is a domain prefix, not the whole NSAP that is
> configured for CLNS. The conversion prefix will be everything up to (and 
> excluding) the area ("000c"), which makes the conversion prefix in your case
> to be 47.0005.80.0600.0000.00.0000. We fixed the parser to reject any prefix
> larger than 11 bytes 

Probably a good idea since the example in your book shows it like this. The
example uses F where this is MP.

>                       (so that the prefix + 2 byte area + 6 byte system ID +
> 1 byte selector will not exceed the max NSAP length of 20 bytes). This way,
> when a Phase IV address gets converted at a router enabled for conversion, it
> gets converted to 
> 
>        <conversion prefix> + <area> + <aa000400+byte-swapped Phase IV address>
> 			   + N-selector
> 
> The implication of this is that the conversion scheme basically is restricted
> to INTRA-domain routing (and I am assuming that you wanted to 'join' two
> domains using the conversion scheme). 
> 
Not really. What I want to do is route area 12 of USBR domain through USGS 
domain. It isn't important whether area 12 is a seperate domain or not unless
it causes problems.
> >>
> >>interface ethernet 0
> >>decnet cost 1
> >>
> 
> Now assuming that you were doing intra-domain routing, you need to also have
> CLNS enabled on the ethernet interfaces on both IGS and the AGS.

I don't understand why. All nodes on the ethernets are Phase IV, the only place
Phase V exists is on the cisco's.

> 
> >>When I bring up the clns with all clns debugging on it shows some of the nodes
> >>being advertized (not many 3/15),  however they do not make it to DECnet 
> >>routing tables. The cisco's are DECnet isolated.  HELP!!!!
> 
> The reason you are not seeing DECnet routes going between the two routers is
> that there is no Phase IV adjacency between the AGS and IGS. Only IGRP routes
> will be exchanged between them.
> 
> Please let us know if you have any other questions.
> 
> -arun

I do not want, and when we go live can NOT have, Phase IV adjacency. What I want
is Phase conversion on the cisco's. The global WAN (USBR) routing Phase V on
cisco's and the local WAN (Mid Pacific Region - MP) routing Phase IV on all
kinds of stuff.

Thanks - jimww
                    










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