LACP Frames / Level3 Transport

Eygene Ryabinkin rea+nanog at grid.kiae.ru
Tue May 24 09:48:28 UTC 2016


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.


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