We are currently facing a problem with a port sharing configuration.
On one end we have a X670 stack (2 switches) and on the other end we have two
Juniper switches in a virtual chassis (VCP).
The config is pretty straight forward. Extreme:
enable sharing 1:37 grouping 1:37,2:37 algorithm address-based L3_L4 lacp
description "to Mica IT";
The problem with this configuration is that port 2:37 (connected to port xe-0/1/0) frequently drops out of the LAG without the interface going down:
12/12/2016 14:59:51.01 [i] Slot-1: Remove port 2:37 from aggregator
12/12/2016 14:59:51.00 [i] Slot-1: Port 2:37 is Down, remove from aggregator 1:37
12/12/2016 14:59:51.00 [i] Slot-1: Port 2:37 link down - remote fault
12/12/2016 14:59:26.39 [i] Slot-1: Add port 2:37 to aggregator
12/12/2016 14:58:59.20 [i] Slot-1: Remove port 2:37 from aggregator
12/12/2016 14:57:26.14 [i] Slot-1: Add port 2:37 to aggregator
The things i’ve tried to fix this problem:
- Created a new LAG (ports 1:36 and 2:36) > no difference.
- Swapped the optics > no difference the problem still persists on port 2:37.
- Swapped fibers > no difference the problem still persists on port 2:37 but problem to the other port (xe-2/1/0) on the Juniper side.
The problem always seem to be on the "second" port on the Extreme stack.
Does anybody has any idea what could go wrong in the scenario?