C1000 stack LACP problem

[Wei Ting Lin]

Hi all

I stacked two C1000s, and set gi2/0/39-40 as etherchannel, the interface is default config,

but an error message appears, do I need to do other settings?

switch(config)#interface range gi2/0/39-40
switch(config-if-range)# switchport mode trunk
switch(config-if-range)# channel-group 1 mode active
Command rejected (Port-channel1, Gi2/0/39): Command execution failed on one or more switches

% Range command terminated because it failed on GigabitEthernet2/0/39

Device is C1000-48P-4X-L *2

version is 15.2(7)E4

[marce1000]

 - Could you try channel-group 1 mode on, and or look into using the latest advisory release too : https://software.cisco.com/download/home/286324209/type/280805680/release/15.2.7E6

 M.

[Wei Ting Lin]

I tested mode on, but it still doesn't work, and the release note didn't mention similar bugs.
I will try to test the new version.

[Wei Ting Lin]

i try upgrade to 15.2(7)E6 , the problem is slove.

[MHM Cisco World]

thanks for sharing solution.

[paul driver]

Hello
Etherchannel can suffer from an order or operation in the way they are created, suggest do the following:

L2 etherchannel
1) default physical interfaces (if possible)
2) configure port-channel in physical interfaces

-- port-channel will be created automatically

3)create trunking encapsulation or access port mode directly in port-channel interface
4)enable physical interfaces "no shut"

Example:
conf t
default int ran gig0/1 -2 ( if applicable)

int ran gi0/1 -2
shut ( if applicable)
channel-group 1 mode xxx

int port-channel 1
switchport trunk encap dot1q
switchport- mode trunk
no shut

or

switchport vlan 123
swithport mode access
no shut

[Wei Ting Lin]

I have tried your way, but the device still shows command error.

[paul driver]

Hello
If the error ONLY pertains to the interface range command, then could be cosmetric to the software train you are using and indeed upgrading that software solves the problem.