LACP Frames / Level3 Transport

Sun May 22 19:55:31 UTC 2016

Hi Nanog-ers,
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.
thanks,
-nevin