Juniper <-> Cisco IPv6 BGP peering

Owen DeLong owen at
Wed Dec 7 23:10:33 UTC 2011

On Dec 7, 2011, at 2:27 PM, Vlad Galu wrote:

> Randy Carpenter wrote:
>> Does anyone have any suggestions on setting up BGP peering between Juniper (SRX) and Cisco?
>> I successfully have cisco-cisco and juniper-juniper without problems.
>> When I am trying to peer to one of my upstreams (who has cisco) with my Juniper SRX, They are seeing the link-local address as the next-hop, but are unable to get an ND entry for it, and thus cannot forward traffic to me.
> Any reasons against exchanging v6 prefixes over a v4 session?

Multiple single points of failure.
Complexity of the configuration
More difficult to troubleshoot
Unnecessary cross-protocol dependencies.

Just to name the ones that come to mind instantly.

Any reason for it?


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