07-10-2013 05:48 AM - edited 03-07-2019 02:19 PM
Dear Team.
I have two switch 2960, WS-C2960S-24TS-L and WS-C2960S-48TS-L was stackable.
I was configured ethernet-channel, using one port on 2960S-24 port and other port on 2960S-48 port but not success.
After enter command channel-group 1 mode auto,
switch show error that it need two port belong to the same a switch.
Please help me solution?
Thanks.
Solved! Go to Solution.
07-10-2013 07:00 AM
Nam,
Try this
int gi1/0/1
channel-protocol lacp
channel-group 1 mode Active
on other port
int gi2/0/1
channel-protocol lacp
channel-group 1 mode Active
regards
Inayath
07-10-2013 07:23 AM
As I indicated before, PAgP does not support cross-stack etherchannel.
You are using PAgP with the 'auto' option.
Change the 'auto' option with 'passive' for LACP implementation.
Regards,
07-10-2013 06:07 AM
Nam,
Few things I believe you have already checked:
1- Phycial interface is up
2- Before the etherchannel the port is up if directly connected between two switches.
3- Can you configure to use channel protocol or force that to on.
4- Give us the output of show etherchannel summary
HTH
Regards
Inayath
07-10-2013 06:16 AM
Dear Team.
Yes, physical interface up.
On Stackable switch:
interface gi1/0/1
channel-group 1 mode auto
interface gi2/0/1
channel-group 1 mode auto
Stackable switch show error output, that it need port belong to the same a switch.
Thanks.
07-10-2013 06:15 AM
Per documentation:
"
You can use PAgP only in single-switch EtherChannel configurations; PAgP cannot be enabled on cross-stack EtherChannels. "
Use LACP instead.
Regards,
07-10-2013 06:43 AM
Dear Edison Ortiz.
It's mean, i need add more command below:
int gi1/0/1
channel-protocol lacp
channel-group 1 mode auto
on other port
int gi2/0/1
channel-protocol lacp
channel-group 1 mode auto
Thanks.
07-10-2013 07:00 AM
Nam,
Try this
int gi1/0/1
channel-protocol lacp
channel-group 1 mode Active
on other port
int gi2/0/1
channel-protocol lacp
channel-group 1 mode Active
regards
Inayath
07-10-2013 07:23 AM
As I indicated before, PAgP does not support cross-stack etherchannel.
You are using PAgP with the 'auto' option.
Change the 'auto' option with 'passive' for LACP implementation.
Regards,
07-11-2013 06:37 AM
Good solution.
Thanks Edison and Inayath.
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