Thank you for the answer Arie,
It still sounds quite weird to me. Nevertheless,, i'll give it a try in
a few hours.
Questions:
If there are no IPv6 prefixes to be exchanged, where and how will next
hop be used?
I thought BGP session setup was independent of the actual prefixes that
are about to be exchanged.
Does IOS-XR forbid the exchange of capabilities in advance?
--
Tassos
Arie Vayner (avayner) wrote on 05/05/2011 23:05:
Tassos,
It is supported. I just replicated your issue in a lab, and fixed it
(took a peek at your case with TAC, so cheating a bit...)
You need to enable IPv6 on the interface which would be used as the next
hop, otherwise, how do you expect to be able to have the IPv6 AF
enabled...
It's a bit weird to me as well, but as soon as I configured an IPv6
address on the interface, the session came up and all started to work.
Arie
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Tassos
Chatzithomaoglou
Sent: Wednesday, May 04, 2011 22:00
To: cisco-nsp
Subject: [c-nsp] Does IOS-XR support exchange of IPv6 prefixes over an
IPv4BGP peering
Can someone verify whether it's possible to exchange IPv6 prefixes over
an IPv4 BGP peering in IOS-XR?
According to an old doc in
http://www.cisco.com/en/US/docs/ios_xr_sw/iosxr_r3.3/conversion/referenc
e/guide/cn33main.html#wp1028960
*Note *A given address family is only supported with a neighbor whose
address is from that address family. For instance, IPv4 neighbors
support IPv4 unicast and multicast address families, and IPv6 neighbors
support IPv6 unicast and multicast address families. However, you cannot
exchange IPv6 routing information with an IPv4 neighbor and vice versa.
--
Tassos
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