LACP BPDU packets priority?

[Saad, Mark]

Johannes
  This is dependent on the NIC Driver.  Chelsio's have a option to prioritize "slow-protocols"
into a dedicated queue.  The iflib drivers I believe in 12-STABLE and newer have this ability as well. 
Non iflib nics like Solarflare do not have any way to prioritize this and 11-STABLE does not have it at all. 

For the Chelsios you need to set hw.cxgbe.rsrv_noflowq=1" in /boot/loader.conf or use kenv to set it before loading the
module.



---
Mark Saad
Lucera Financial Infrastructures, LLC
msaad at lucera.com



________________________________________
From: owner-freebsd-net at freebsd.org <owner-freebsd-net at freebsd.org> on behalf of Johannes Lundberg <johalun0 at gmail.com>
Sent: Thursday, February 4, 2021 3:56 PM
To: freebsd-net at freebsd.org
Subject: LACP BPDU packets priority?



*This email originated from outside the Firm*


Hi

We're experiencing unstable lacp lagg and not seeing BPDU packets coming
to the switch we when expect them to. Can anyone answer what is the
priority of those packets? Could it be that they are not being sent from
the FreeBSD host because they are stuck in outgoing queue?

Please cc me since I'm not subscribed.

Thanks!


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