BGP Connection reset on fast timers

[Olivier Benghozi]

Just a comment:

here we use 5/15 on some 10GE links between Redback/Ericsson/SmartEdge and Cisco routers (so, unrelated to BIRD and Linux) with success (never flaps if the link is OK). These links are used to receive/transmit L2TP tunnels traffic.

The usecase was:
1) there are some intermediate switches on the links (so a cut cannot always be quickly detected)
2)  L2TP timers are aggressive and it's relevant to switch to another path quickly enough in order to avoid some L2TP tunnels disconnections, which in turn would disconnect several tens of thousands PPP sessions and users
3) BFD wasn't an option (between two different operators)


Olivier

> Le 12 juin 2018 à 11:09, Maria Jan Matějka <jan.matejka at nic.cz> a écrit :
> 
> If I remember it correctly, there was somebody who used a 5/15 setup and still had to take a lot of care to keep the links up.
> By the way, is there any good reason to have so short timeouts? 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://trubka.network.cz/pipermail/bird-users/attachments/20180612/1792a56d/attachment.html>