IPv6 and FR inverse ARP

Unanswered Question
Jun 10th, 2009

Does frame-relay support IPv6 with inverse ARP now. What IOS software support IPV6

I have this problem too.
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newnetman Wed, 06/10/2009 - 18:28

Hello JustKennie,

Frame-Relay supports IPv6 the same way it does IPv4, even with the usual frame-relay mapping, though in IPv6 this has to be mapped to the destination local-link address, instead of the former "foreign ip address", when running distance vector protocol, your split-horizon is equally still waiting for you to turn off.

In a nutshell Ipv6 can run on Frame-Relay and gives more avenue to have more fun with it than on IPv4, only if you understand the IPv6 addressing structure of course.

Hope i am able to in a way?.

Harold Ritter Thu, 06/11/2009 - 05:21

Just to add that there is actually an equivalent mechanism defined for IPv6 (since ND is used for IPv6 rather than ARP, the technique is called inverse ND). It is RFC 3122. This is currently not available in IOS though.



Rupesh Kashyap Thu, 06/11/2009 - 08:00

Sir, the Answer is still incomplete. I also want to know If IP6 is supporting Inverse-ARP ?

francisco_1 Thu, 06/11/2009 - 08:02

IPv6 does not support inverse-arp like IPv4. you will have to use static frame-relay map instead.


Harold Ritter Thu, 06/11/2009 - 08:26


There is no concept of arp in IPv6, hence there will never be inverse arp. But as I mentioned there is an equivalent mechanism defined by RFC3122, which is not yet available in IOS.



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