[c-nsp] Does IOS-XR support exchange of IPv6 prefixes over an IPv4BGP peering

[Arie Vayner (avayner)]

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: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] 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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