Creating a channel-group

[dwilli337]

I am trying to create a channel-group so that I can use 4x1gig connections from a 3560-x to my core a 4507r.  When i set the ports the 3560 shows them as suspended.  here is the sh run from the ports.  I know that I have gi1/4 on the 3560 shutdown right now and I only have one of the prots cabled right now while I try to get the config working.  Thanks!

3560-x

Building configuration...

Current configuration : 168 bytes
!
interface GigabitEthernet1/4
description Uplink to CORE GI3/45
switchport trunk encapsulation dot1q
switchport mode trunk
shutdown
channel-group 14 mode on
end

Core 4507R

CoreSw# sh run int gi3/45
Building configuration...

Current configuration : 172 bytes
!
interface GigabitEthernet3/45
description UPLINK to Cisco3560DevSwitch GI1/4
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 14 mode on
end

[andrew.prince]

Everything MUST be the same @ both ends of the link speed/duplex etc.  Also you cannot bring an EtherChannel up unless both sides are up/up!

HTH>

[dwilli337]

Both ports are set to auto/auto for duplex and speed.  They both show a-full and a-1000.

[dwilli337]

I set duplex full and speed 1000 on both prts then did a shut/no shut on each and they come up as suspended.

[Latchum Naidu · Accepted solution]

Hi,

Also make sure the encapsulation and native vlan is same at both ends.
See the below example configs on my 4507.

interface Port-channel1
switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan 50
switchport mode trunk

interface GigabitEthernet3/30
description xxxxxxxxxxxxxxx
switchport trunk encapsulation dot1q
switchport trunk native vlan 50
switchport mode trunk
channel-group 1 mode on
!
interface GigabitEthernet3/31
description xxxxxxxxxxx
switchport trunk encapsulation dot1q
switchport trunk native vlan 50
switchport mode trunk
channel-group 1 mode on

Hope this will help you.

Please rate the helpfull posts.
Regards,
Naidu.

[dwilli337]

Thats it!!  Thanks!  I did not have the port channel set and when I changed that the NIC's went active.  Thansk again for the quick reply!