[ixpmanager] Issue with BIRD v2 peering, hold timers expiring.

[Nick Zurku]

Hello,

I know this a bit of reach to be asking about on the IXP-Manager mailing list, but I wanted to probe if anyone has seen this before.

We moved away from arouteserver building our route server config, and now use the native IXP-Manager configs. At the same time, we did jump to BIRD v2.

Ever since then, we get some hold timer expired sessions drops almost daily.

2020-03-26 13:04:43 <RMT> pb_0004_as23738: Error: Hold timer expired
2020-03-27 23:04:43 <RMT> pb_0002_as20326: Error: Hold timer expired
2020-03-28 07:04:39 <RMT> pb_0013_as54825: Error: Hold timer expired
2020-03-28 12:04:25 <RMT> pb_0002_as20326: Error: Hold timer expired
2020-03-28 20:04:36 <RMT> pb_0002_as20326: Error: Hold timer expired
2020-03-29 20:04:26 <RMT> pb_0005_as5050: Error: Hold timer expired
2020-03-31 08:04:42 <RMT> pb_0002_as20326: Error: Hold timer expired
2020-03-31 14:04:24 <RMT> pb_0005_as5050: Error: Hold timer expired
2020-04-01 09:04:37 <RMT> pb_0013_as54825: Error: Hold timer expired
2020-04-01 19:04:24 <RMT> pb_0013_as54825: Error: Hold timer expired
2020-04-02 10:06:01 <RMT> pb_0012_as27364: Error: Hold timer expired
2020-04-02 13:04:23 <RMT> pb_0002_as20326: Error: Hold timer expired
2020-04-02 15:06:00 <RMT> pb_0011_as27364: Error: Hold timer expired

Our primary route server is running on the old configuration and the older BIRD until everything is proven stable, and it’s not seeing any sort of hold timer issues.

In the IXP-Manager community's opinion, is BIRD 2.0.7 stable with IXP Manager configs and should we be looking into a kernel or hardware issue?

As always, thanks for any assistance and thanks to the IXP-Manager team for making this amazing platform.



-- 
Nick Zurku
PIT-IX Operations Volunteer 
Systems Engineer, TeraSwitch Inc. 
nzurku at teraswitch.com
Office: 412-945-7048

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