Etherchannel on 6509

[holdahl]

I'm trying to configure etherchannel on some cisco 6509 switches.

For some reason it does not seem to work.


Here is some of my config:

!
interface GigabitEthernet2/37
switchport
switchport mode access
no ip address
shutdown
spanning-tree portfast
channel-group 1 mode on

Core12#sh etherchannel port
Channel-group listing:
-----------------------

Group: 1
----------
Ports in the group:
-------------------
Port: Gi2/37
------------

Port state = Down Not-in-Bndl
Channel group = 1 Mode = On Gcchange = -
Port-channel = null GC = - Pseudo port-channel = Po1
Port index = 0 Load = 0x00 Protocol = -


I'm not sure if this is correctly configured.
Any suggestions?

Holdahl

 

[MrNick0483]

The ports contained within the channel should be running in truck mode with dot1Q or your prefered protocol.

 

[vipergg]

Huh ? It doesn't have to be a trunk unless it is needed . Do a show int status and make sure you have layer 1 connectivity (link is active) between both devices.

 

[Belushi]

Yeah, what does a trunk have to do with it. You canhave layer 3 port channels too!

 

[vipergg]

If they are cisco devices then just use this on the interfaces in a shutdown state and bring both up at the same time by doing a no shut on the port channel interface .

"channel-group X mode desirable non-silent

 

[unclerico]

Are you trying to bundle more than one interface??

I hate all Uppercase... I don't want my groups to seem angry at me all the time! =)
- ColdFlame (vbscript forum)

 

[VinceWhirlwind]

Here's some working config off a 6509:

- an Access etherchannel:
!
interface Port-channel20
switchport
switchport access vlan 97
switchport mode access
!
interface GigabitEthernet1/1/32
switchport
switchport access vlan 97
switchport mode access
channel-group 20 mode on
!
interface GigabitEthernet2/1/32
switchport
switchport access vlan 97
switchport mode access
channel-group 20 mode on
!

- a trunked etherchannel:
!
interface Port-channel33
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 501-504
switchport mode trunk
!
interface GigabitEthernet1/7/15
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 501-504
switchport mode trunk
channel-group 33 mode on
!
interface GigabitEthernet2/7/15
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 501-504
switchport mode trunk
channel-group 33 mode on
!

 

[holdahl]

Got it working now simply by doing a no shutdown on the port channel interface:

core11#conf t
core11(config)# interface port-channel 1
core11(config-if)# no shutdown


The 4 bundled ports are no longer in shutdown status and are listed as bundled when running:

# show etherchannel port


Thanks for all suggestions.

-holdahl