Hi, we have a Problem with LACP between a Cisco Catalyst 6509 an a Foundry FastIron Super-X.
The LACP is build of 2 Links. If wee unplug the first (primary) port of the LACP-Channel we will not see any traffic disruption. Also if we replug the port, no traffic disruption will happen. That's like expected.
If we unplug the second port, the traffic will not be disrupted in the first moment. But after roundabout 90 seconds the traffic will stop an will come back again after other 35 seconds. If we replug the link, the traffic will stop again for 35 seconds. Any Idea?
We can see that the LACP-Channel is build on both sides. So this is not a native Spanning Tree event, as it ca be expected by the 35 seconds downtime. Furthermore we are using Rapid Spanning Tree.
!!!!!!!Config Cisco: ! interface Port-channel57 switchport switchport trunk encapsulation dot1q switchport mode trunk switchport nonegotiate ! interface TenGigabitEthernet6/1 switchport switchport trunk encapsulation dot1q switchport mode trunk switchport nonegotiate channel-group 57 mode active ! interface TenGigabitEthernet6/1 switchport switchport trunk encapsulation dot1q switchport mode trunk switchport nonegotiate channel-group 57 mode active
!!!!!!!Config Foundry: ! interface ethernet 6/1 link-aggregate configure key 10057 link-aggregate active ! interface ethernet 6/2 link-aggregate configure key 10057 link-aggregate active !