Re: [Lsr] Link Data value for Multi-area links

Peter Psenak <ppsenak@cisco.com> Fri, 27 November 2020 11:50 UTC

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To: Alexander Okonnikov <alexander.okonnikov@gmail.com>, lsr@ietf.org
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From: Peter Psenak <ppsenak@cisco.com>
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Date: Fri, 27 Nov 2020 12:50:33 +0100
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Subject: Re: [Lsr] Link Data value for Multi-area links
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Alexander,

On 26/11/2020 17:58, Alexander Okonnikov wrote:
> Hi WG,
> 
> RFC 5185 says that Neighbor's IP address to be encoded into Link Data field. Per RFC 2328 router's own IP address to be encoded into Link Data. What is the reason to advertise neighbor's IP address for multi-area links and not local IP address? It seems like bug. Could someone comment on this?

Advertising a neighbor address/ifindex helps to eliminate ambiguity in 
case of parallel point-to-point adjacencies. It's not perfect, but 
that's how it was specified. So it's not a bug.

thanks,
Peter

> 
> Thanks in advance.
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