Greetings all.
Studying hard on the BCMSN part on the CCNP trek and I was peeking around our work switches and noticed something odd with regards to the output of some show commands...
Quick ascii of the topology in question:
6509 3750
Gi8/7 ------------------- 3/0/49
Gi8/8 ------------------- 1/0/49
There is MMF fiber linking these two devices and the links are configured as a an EtherChannel as such:
6509
interface GigabitEthernet8/7
description link to Zone 2.1
switchport
switchport trunk encapsulation dot1q
switchport mode trunk
no ip address
channel-group 2 mode active
end
!
interface GigabitEthernet8/8
description link to Zone 2.2
switchport
switchport trunk encapsulation dot1q
switchport mode trunk
no ip address
channel-group 2 mode active
end
3750
interface GigabitEthernet1/0/49
description *** UPLINK TO CORE G8/8 ***
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 2 mode active
end
!
interface GigabitEthernet3/0/49
description *** UPLINK TO CORE G8/7 ***
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 2 mode active
end
The output of the
show etherchannel summary
6509
Z1-C6509-D-01#show etherchannel summary
Flags: D - down P - bundled in port-channel
I - stand-alone s - suspended
H - Hot-standby (LACP only)
R - Layer3 S - Layer2
U - in use f - failed to allocate aggregator
M - not in use, minimum links not met
u - unsuitable for bundling
w - waiting to be aggregated
Number of channel-groups in use: 2
Number of aggregators: 2
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
2 Po2(SU) LACP Gi8/7(P) Gi8/8(P)
10 Po10(RD) -
3750
Z2-C3750-D-01#show etherchannel summary
Flags: D - down P - bundled in port-channel
I - stand-alone s - suspended
H - Hot-standby (LACP only)
R - Layer3 S - Layer2
U - in use f - failed to allocate aggregator
M - not in use, minimum links not met
u - unsuitable for bundling
w - waiting to be aggregated
d - default port
Number of channel-groups in use: 1
Number of aggregators: 1
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
2 Po2(SU) LACP Gi1/0/49(P) Gi3/0/49(P)
Seems all is working as configured, but here is what is messing with my dome. The output of the
show etherchannel port-channel command:
6509
Z1-C6509-D-01#sh ether port-channel
Channel-group listing:
-----------------------
Group: 2
----------
Port-channels in the group:
----------------------
Port-channel: Po2 (Primary Aggregator)
------------
Age of the Port-channel = 195d:03h:10m:44s
Logical slot/port = 14/1 Number of ports = 2
Port state = Port-channel Ag-Inuse
Protocol = LACP
Ports in the Port-channel:
Index Load Port EC state No of bits
------+------+------+------------------+-----------
0 55 Gi8/7 Active 4
1 AA Gi8/8 Active 4
Time since last port bundled: 195d:03h:09m:53s Gi8/8
3750
Z2-C3750-D-01#sh ether port-channel
Channel-group listing:
----------------------
Group: 2
----------
Port-channels in the group:
---------------------------
Port-channel: Po2 (Primary Aggregator)
------------
Age of the Port-channel = 253d:01h:23m:48s
Logical slot/port = 10/2 Number of ports = 2
HotStandBy port = null
Port state = Port-channel Ag-Inuse
Protocol = LACP
Port security = Disabled
Ports in the Port-channel:
Index Load Port EC state No of bits
------+------+------+------------------+-----------
0 00 Gi1/0/49 Active 0
Time since last port bundled: 195d:03h:12m:56s Gi1/0/49
Time since last port Un-bundled: 195d:03h:43m:51s Gi3/0/49
Does the fact that the 3750 is in a stacked configuration cause this funkiness or is there an underlying issue?
Thanks for your time!
