Trouble with IPv6 setup on Quagga

Vicky Shrestha vicky at
Thu Aug 9 19:55:26 UTC 2012

Hash: SHA1

On Aug 7, 2012, at 1:51 AM, Marco Hogewoning wrote:

>> I am having trouble with Quagga in setting up IPv6 BGP. So far it was
>> failing with external providers. Just now I gave it a try to setup BGP
>> session (IPv6 only) within our ASN between two routers.
>> From our other end router I see there is no acconcement, while I see blocks
>> being announced via Quagga. Also strange enough is that the number of
>> blocks I account - they all come as "withdrawl routes" on other router as
>> soon as Quagga is turned on.
> I recall some issues with the value of the next-hop in the BGP messages in the past. Haven't been around Quagga in recent times, don't know if this is still the case. If possible you might want to catch a BGP packet with tcpdump and verify the value in there makes sense to the other side.

We were having those issue with quagga-0.99.15 and cisco routers; haven't tested recent versions.  

We used a route map to fix the ipv6 next hop for outbound announcements in quagga.

> Got bitten by this before and took me ages to figure out the other side was dropping my updates because the next-hop couldn't be resolved.
> Marco


Vicky Shrestha

Version: GnuPG v1.4.8 (Darwin)


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