BGP Connection reset on fast timers

[dave seddon]

Packet 35 shows .13, which is the Bird running on Vmware (sorry about
that), and clearly thinks the hold time expired:

Major error Code: Hold Timer Expired (4)
Minor error Code (Hold Timer Expired): 0

Might be worth trying to run bird debugging to see what else it says.
Have you consider BFD?
Maybe try running different visualization (e.g. KVM), or no visualization.

On Tue, Jun 12, 2018 at 3:42 AM, Olivier Benghozi <
olivier.benghozi at wifirst.fr> wrote:

> 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?
>
>
>


-- 
Regards,
Dave Seddon
+1 415 310 4086
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://trubka.network.cz/pipermail/bird-users/attachments/20180614/c47b0e96/attachment.html>