Hi, today I came across a Catalyst 6509 switch configuration and have noticed some strange thing on the etherchannel configuration side, it appears that it have interface port-channel 2 and port-channel 2A, what was that mean? its the etherchannel not forming and joined together?
What wrong with the below configuration that cause it to automatic created another port-channel (2A) interface in this case?
show run configuration
interface Port-channel2
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 20,30,40
switchport mode trunk
no ip address
interface GigabitEthernet7/13
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 20,30,40
switchport mode trunk
no ip address
priority-queue cos-map 1 5 6 7
channel-protocol lacp
channel-group 2 mode active
end
interface GigabitEthernet7/14
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 20,30,40
switchport mode trunk
no ip address
priority-queue cos-map 1 5 6 7
channel-protocol lacp
channel-group 2 mode active
end
show etherchannel summary
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
2 Po2(SU) LACP Gi7/13(P)
2 Po2A(SU) LACP Gi7/14(P)
show etherchannel port-channel (group 2)
Group: 2
----------
Port-channels in the group:
----------------------
Port-channel: Po2 (Primary Aggregator)
------------
Age of the Port-channel = 134d:03h:02m:47s
Logical slot/port = 14/5 Number of ports = 1
Port state = Port-channel Ag-Inuse
Protocol = LACP
Ports in the Port-channel:
Index Load Port EC state No of bits
------+------+------+------------------+-----------
0 FF Gi7/14 Active 8
Time since last port bundled: 133d:00h:31m:35s Gi7/14
Port-channel: Po2A
------------
Age of the Port-channel = 133d:00h:30m:40s
Logical slot/port = 14/6 Number of ports = 1
Port state = Port-channel Ag-Inuse
Protocol = LACP
Ports in the Port-channel:
Index Load Port EC state No of bits
------+------+------+------------------+-----------
0 FF Gi7/13 Active 8
Time since last port bundled: 133d:00h:30m:38s Gi7/13
As see above it has 2 port channels in group 2 whereby interface port-channel 2A is automatically created itself and not found in the show run config.
These two ports (gi7/13-14) were connected and associated to a Nortel blade server siwtch, we don't know the configuration or any info on the blade switch since it was done by vendor, could this be the problem coming on their end and nothing to do on the Catalyst 6509 switch side. And what the type of causes could lead to this kind of error.
Thanks in advance
Wai
