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List: ms-ospf
Subject: Re: [OSPF] link-LSA for ospfv3 multi area adjacency
From: Nischal Sheth <nsheth () juniper ! net>
Date: 2008-06-11 20:40:56
Message-ID: 48503858.10200 () juniper ! net
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Peter Psenak wrote:
> Nischal,
>
> Nischal Sheth wrote:
>> Section 4 of RFC 5185 says that a link-LSA SHOULD NOT be advertised for a
>> ospfv3 multi-area adjacency. Instead, it suggests that the neighbor's
>> link
>> local address can be gleaned from hello packets.
>>
>> It appears to me that this won't work for multi-area adjacencies in
>> non-IPv6
>> AFs. Any thoughts on loosening this recommendation and generating
>> link-LSAs
>> for multi-area adjacencies in general or at least for non-IPv6 AFs?
>
> 5185 is based on the current OSPFv3 spec that supports only a single AF.
> If the multi AF support in OSPFv3 requires changes to the 5158, it
> should be done as a part of the OSPFv3 multi-AF effort.
>
Hi Peter,
Fair enough. This sounds like a good course of action.
It seems that the most straightforward solution would be to override the
RFC 5185 behavior for non-IPv6 AFs and generate link-LSAs for multi-area
adjacencies. These must contain only the link local address and no other
prefixes.
Could the authors of the multi-AF draft please address this issue in the
next version?
Thanks,
Nischal
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