Subject: Re: Multiple un-numbered serial links between two routers

From: kamatchi soundaram <[email-masked]>
Date: Tue, 13 May 2003 10:58:09 -0700

See in lined with [GKS]

GKS.
----- Original Message -----
From: "Acee Lindem" <[email-masked]>
To: <[email-masked]>
Sent: Monday, April 14, 2003 9:24 PM
Subject: Re: Multiple un-numbered serial links between two routers

> j j wrote:
> > Can OSPF support this? Seems like there isn't enough
> > information in Router LSA to distinctly identify the
> > interfaces for nexthop information.
>
> JJ,
>
> You are correct - a router link in a router LSA doesn't
> provide you with enough information to distinctly identify
> parallel unnumbered links. Note that an IP next hop
> address is not necessary for a point-to-point link (see section
> 16.1.1 in RFC 2328).

[GKS] -- For equal cost multipath calculation, i would think, even in the
un-num p2p links the correct interface(local) need to be determined to
forward the packet in the right interface.??

>
> >
> > Or is this an invalid configuration on a router?
>
> There are a number of implementation choices one could
> make. One is to consider all the advertised parallel unnumbered
> links valid as long there is bi-directional connectivity
> via one of them. Another would be to consider the configuration
> invalid.
>
> >
> >
> > thanks
> >
> > __________________________________________________
> > Do you Yahoo!?
> > Yahoo! Tax Center - File online, calculators, forms, and more
> > http://tax.yahoo.com
> >
>
> Hope this helps,
> --
> Acee
>