move etherchannel member

[knack81]

Hi,

i have a 6 members stack of 3750E, now i need to free some FO ports to install a X2 transceiver and i must to move the 1gb transcevier on other switch stack member.

the member of port-channels are configured like this

 switchport mode trunk
 channel-group xxx mode on

so no LACP.

The question is that, can i add before the new interface at port-channel, move the transceiver and after remove the old interface? 

 can i also do it during working hours?

what is the best way

thanks

Andrea

[David Ruess]

Hello,

Depending on how many links are bundled in the port channel you should be able to add more to it (may not be forwarding traffic since you can only have so many ports working in a port channel at one time), the rest will just be standby ports. Then you can remove the ports you need to. Keep in mind the individual ports need to match configuration of the other ports in the port channel and the port channel itself to prevent errors. It could disrupt traffic a bit while it forwarded traffic on one link and had to switch to another one as you removed links you needed. Best practice would probably be an outage window.

Hope that helps

-David

[balaji.bandi]

as long as the same speed links ( you running rapid spanning-tree) config is good, then I do not see any issue.

there is small convergence, I did not see any issue when I deploy in a live network and during busy workings hours.

if you are more cautious do in a maintenance window.

[Reza Sharifi]

Hi,

can i also do it during working hours?

I would not do this during business hours, as adding and removing a physical link can put the entire Portchannel in error-disabled mode,  and that certainly would not be pleasant, especially since you have 6 switches in the stack.

HTH