LACP Frames / Level3 Transport

[rea+nanog at grid.kiae.ru (Eygene Ryabinkin)]

Nevin, good day.

Sun, May 22, 2016 at 07:55:31PM +0000, Nevin Gonsalves via NANOG wrote:
> Hoping someone may have come across a similar issue. Has anyone ever
> seen a situation where maybe like a Level3 transport system could be
> possibly dropping LACP frames..?
> End point A -? tx and rx counts incrementing for LACP
> ?LACP info: ? ? ? ?Role ? ? System ? ? ? ? ? ? System ? ? ?Port ? ?Port ?Port?? ? ? ? ? ? ? ? ? ? ? ? ? ? ?priority ? ? ? ? ?identifier ?priority ?number ? key?? ? ? et-0/0/0.0 ? ? Actor ? ? ? ?127 ?5c:45:27:6d:2a:c0 ? ? ? 127 ? ? ?56 ? ?16? ? ? et-0/0/0.0 ? Partner ? ? ? ? ?1 ?00:00:00:00:00:00 ? ? ? 127 ? ? ?56 ? ?16? ? LACP Statistics: ? ? ? LACP Rx ? ? LACP Tx ? Unknown Rx ? Illegal Rx??? ? et-0/0/0.0 ? ? ? ? ? ? ?6925 ? ? ? ? ? ? ?6922 ? ? ? ? ? ?0 ? ? ? ? ? ?0
> End Point B - no RX, partner macs are 0s..
> ? LACP info: ? ? ? ?Role ? ? System ? ? ? ? ? ? System ? ? ?Port ? ?Port ?Port?? ? ? ? ? ? ? ? ? ? ? ? ? ? ?priority ? ? ? ? ?identifier ?priority ?number ? key?? ? ? et-9/1/0.0 ? ? Actor ? ? ? ?127 ?5c:45:27:77:d6:c4 ? ? ? 127 ? ? ?68 ? ?16? ? ? et-9/1/0.0 ? Partner ? ? ? ? ?1 ?00:00:00:00:00:00 ? ? ? ? 1 ? ? ?68 ? ?16? ? LACP Statistics: ? ? ? LACP Rx ? ? LACP Tx ? Unknown Rx ? Illegal Rx?? ? ? et-9/1/0.0 ? ? ? ? ? ? ? ? 0 ? ? ? ?6752 ? ? ? ? ? ?0 ? ? ? ? ? ?0?
> Link works fine otherwise outside the aggregate and w/o LACP. Any
> inputs will be greatly appreciated.

Cisco Q-in-Q implementation in some configurations (details are
blurry, since our provider turned to X-connect quite fast).  Also
VPLS implementation in (older) EXOS releases (Extreme Networks),
  https://gtacknowledge.extremenetworks.com/articles/Solution/Layer-2-Control-packets-like-STP-LACP-EDP-etc-are-not-passing-through-VPLS
-- 
Eygene Ryabinkin, National Research Centre "Kurchatov Institute"

Always code as if the guy who ends up maintaining your code will be
a violent psychopath who knows where you live.