We use BFD between ASR9k and ALU 7750SR.
ASR configured to do one session for bundle because ALU cannot do BFD
session per link.
So, ASR selects one port from bundle and sends BFD packet over it.
ALU does BFD on RP, one session for etherchannel, but it sends BFD
packets into each link consecutively, first link, second link and so on
to monitor a whole bundle.
In such a way to prevent ASR from timing out bfd session due to small
number of packet hit for bfd agent we set multiplayer on ASR side to
relatively big value.
Bundle resides on different card in both routers.
And it works.
Geert,
so no, forget BFD and portchannels :-)
not so quickly :-) On NX-OS as well as IOS-XR, two platforms/OS where we
have been running BFD sessions on the linecards, we do support BFD on
channels/bundle, albeit in a proprietary fashion as this is not (yet?)
standardized. As we're still using Layer 3 BFD pkts, now running over
each bundle/channel member, the topologies supported by the specific BFD
over channel implementations are limited, on IOS-XR we can only do
back-to-back bundles (i.e. between two XR devices), NX-OS is a bit more
flexible in this regard.
So BFD and portchannels is still tricky and limited to some platforms
and topologies, but it's certainly not impossible.
oli
_______________________________________________
cisco-nsp mailing list [email protected]
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/
_______________________________________________
cisco-nsp mailing list [email protected]
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/
