07-15-2012 04:46 AM - edited 03-07-2019 07:46 AM
I am setting up LACP links to a HP c7000 blade enclosure and am seeing something I have never seen before... I configure two 10Gb interfaces to be members of "channel-group 10 mode active" and then configure the specific trunk info under the interface port channel. When I connect the two links to the c7000's Flex10 module, the ports come up and port channel - this is where it gets weird... When I do a "show etherchannel summary" on the 6500, I see the following: Notice the "A" that gets automatically create
10 Po10(SU) LACP Te3/7(P)
10 Po10A(SU) LACP Te4/7(P)
When the port channel is down, the "A" goes away and they show on the same line as members of Po10.
They appear to be functioning properly when up, I've just never seen this behavior and am hoping someone can explain!
Thanks!
interface TenGigabitEthernet3/7
switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan 999
switchport trunk allowed vlan 58,61
switchport mode trunk
load-interval 30
channel-group 10 mode active
end
!
interface TenGigabitEthernet4/7
switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan 999
switchport trunk allowed vlan 58,61
switchport mode trunk
load-interval 30
channel-group 10 mode active
end
!
interface Port-channel10
switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan 999
switchport trunk allowed vlan 58,61
switchport mode trunk
end
07-15-2012 05:20 AM
This is seen when the channeled ports are not compatible with each other or with ports at remote peer.
May be due to mismatch at HP side config in your case.
HTH
Shijo George
07-15-2012 05:23 AM
Hello Bmlabarr33,
it is a minor issue with no real impact on the portchannel behaviour I have sometimes seen the same.
This subject has been discussed in the forums. The explanation should be that there is at least a difference between the two member interfaces (including QoS aspects that may be defined at linecard or ASIC chip level) and for this reason IOS adds the second port as PO10A to mean a slight difference exist.
Hope to help
Giuseppe
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