11-28-2005 12:14 PM - edited 03-03-2019 12:57 AM
My port channel is not coming up can you review my port channel configuration.
SWITCH#
!
interface Port-channel12
switchport access vlan 513
switchport mode access
!
end
11-28-2005 02:09 PM
Which physical interfaces are part of channel-group 2? Can you paste the entire config?
11-28-2005 02:14 PM
Hello,
how are your participating interfaces configured ? They should look like this (assuming you use interfaces FastEthernet0/1 and FastEthernet0/2 for your channel on both devices):
3550-1#
!
interface FastEthernet0/1
switchport access vlan 513
switchport mode access
channel-group 12 mode on
!
interface FastEthernet0/2
switchport access vlan 513
switchport mode access
channel-group 12 mode on
!
interface Port-channel12
switchport access vlan 513
switchport mode access
3550-2#
!
interface FastEthernet0/1
switchport access vlan 513
switchport mode access
channel-group 12 mode on
!
interface FastEthernet0/2
switchport access vlan 513
switchport mode access
channel-group 12 mode on
!
interface Port-channel12
switchport access vlan 513
switchport mode access
Do you have physical connectivity at all ?
Regards,
GP
11-28-2005 02:22 PM
The only difference is that my channel is setup for desirable instead of on that shouldn't be an issue.
switch#
!
interface FastEthernet0/9
description **** Primary_ NetScaler01****
switchport access vlan 513
switchport mode access
speed 100
duplex full
channel-group 12 mode desirable
!
interface FastEthernet0/10
description **** Primary_ NetScaler01****
switchport access vlan 513
switchport mode access
speed 100
duplex full
channel-group 12 mode desirable
!
end
11-28-2005 02:31 PM
Hello,
you have the exact same configuration for the two ports on the other side of the connection ? What devices do you use (e.g. 2950 switches, or 3500 switches) ?
Regards,
GP
11-28-2005 02:51 PM
Yes the configurations are the same on both 3600 Switches. The devices that are connected to the ports are not setup currently in a channel mode that maybe the issue, what do you think?
11-28-2005 06:44 PM
This should work as long as the far end is set as either desirable or auto for the channel . Also make sure the vlans match on each end and that the port channel is not admin down . Do a show ip int brief to check . At the very least you should see cdp neighbors thru these links even if for some reason the channel is not coming active . You could also bounce the port channel to see if that helps . What is the status when you do a "show etherchannel detail " ? I know the config that you are using works fine on a 3750 ,we have etherchannels setup in multiple places as desirable which is basically cisco's recommendation on how to set them up .
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