[f-nsp] Wrong IPv6 CAM entry on XMR

Gerald Krause gk at ax.tc
Fri May 21 05:21:53 EDT 2010


Am 12.05.2010 18:52, schrieb Gerald Krause:
> Hi,
> 
> whilst debugging a connection problem to eu.irc6.net I've found a
> probably wrong CAM entry on one of our XMR's (4.0.1aT177):
> 
> Routing Table:
> ==============
> SSH at br2#sh ipv6 route 2001:16d8:27::
> B    2001:16d8::/32        2001:1478:14:1::1  tunnel 2     20/10
>   22m24s
> 
> CAM Entry:
> ==========
> SSH at br2#sh cam ipv6 4/7 2001:16d8::/32
> LP Index IPV6 Address                                MAC            Age
>                                                      (VLAN Out IF PRAM)
> 4  5c4ee 2001:16d8:fe00::/40                         d417.26d6.72fb Dis
>                                                      (N/A  4/3    0092a)
> 
> Maybe the longer prefix in the CAM is a result from an previous BGP
> update that wasn't accurately re-programmed.
> 
> Is there any chance to invalidate those certain CAM entries without
> shutting down the whole IPv6 BGP session?

Just for the records - TAC is suggesting an software update to 4.0.1d,
even the problem was not traceable up to the root cause.

--
Gerald




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