[110248] in North American Network Operators' Group
Re: IPv6: IS-IS or OSPFv3
daemon@ATHENA.MIT.EDU (Mark Tinka)
Tue Dec 30 19:22:25 2008
From: Mark Tinka <mtinka@globaltransit.net>
To: nanog@nanog.org
Date: Wed, 31 Dec 2008 08:21:41 +0800
In-Reply-To: <F6949892-D444-497A-BBCF-A01694763E17@lacnic.net>
Reply-To: mtinka@globaltransit.net
Errors-To: nanog-bounces@nanog.org
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On Wednesday 31 December 2008 03:14:13 am Roque Gagliano=20
wrote:
> at least in my case, I did turned ISISv6 in one WAN
> interface where the router on the other side (a Cisco)
> did not have the "ipv6 unicast routing" general command
> on and the isis adjacency went down completely. So, yes
> that was an issue.
One of the things I'm hoping Cisco can fix in not-too-
distant future releases of IOS.
> But if you enabled IPv6 in both ends
> first and then one interface at the time, it worked.
What we saw on our test segment was that v4 adjacencies were=20
not torn down by merely enabling IS-ISv6 on an interface=20
(given that JunOS enables IS-ISv6 by default when IS-IS is=20
enabled on the router; in IOS, you have to explicitly turn=20
IS-ISv6 on).
v4 adjacencies were torn down *after* an IPv6 address was=20
added to the interface. We witnessed this issue under both=20
IOS and JunOS.
Cheers,
Mark.
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