11-08-2005 08:10 AM - edited 03-03-2019 12:43 AM
i have 2 4507s each with dual sup 4s. I have applied the below configs to them respectively. However, the interfaces both show down and down, any suggestions?
interface Port-channel1
description Connecting both buildings
switchport
switchport trunk encapsulation dot1q
switchport mode trunk
interface GigabitEthernet1/1
description Connection to building-1
switchport trunk encapsulation dot1q
switchport mode trunk
channel-protocol lacp
channel-group 1 mode active
interface GigabitEthernet2/1
description Connection to building-1
switchport trunk encapsulation dot1q
switchport mode trunk
channel-protocol lacp
channel-group 1 mode active
(2nd Switch)
interface Port-channel1
description Connecting both buildings
switchport
switchport trunk encapsulation dot1q
switchport mode trunk
interface GigabitEthernet1/1
description Connection to building-2
switchport trunk encapsulation dot1q
switchport mode trunk
channel-protocol lacp
channel-group 1 mode active
interface GigabitEthernet 2/1
description Connection to building-2
switchport trunk encapsulation dot1q
switchport mode trunk
channel-protocol lacp
channel-group 1 mode active
11-08-2005 08:25 AM
Looked up the document describing how to do this:
It doesn't look as if you did something wrong but with a partial config that is hard to see;-)
Please follow the guidelines for troubleshooting as depicted. Hope this helps you a bit further.
Regards,
Leo
11-08-2005 08:31 AM
this document shows giving the port channel an IP, is this necessary, also i need to make sure all vlans go across this trunk..
11-08-2005 08:52 AM
11-08-2005 09:43 AM
I noticed in your configs that there is a difference between both supervisors. The channel is configured on one module, shut on the otehr one. This may point to a redundancy issue. Looked up a URL on that as well:
Suggest that you check this first and bring your sup4's back in sunc if needed.
Leo
11-08-2005 09:51 AM
can you please elaborate on this. i do notice that i cannot console through both sups and sometimes when i reload it switches which ones i can console into
11-08-2005 09:46 AM
The config looks pretty much ok. The other question is do you have link lights between the 2 switches on both ends ? At the very least you should have the physical layer stuff active . Running crossover cables between them ?
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