[c-nsp] Gracefully remove a port from Etherchannel

[Ed Butler]

On Thu, Jun 08, 2006 at 09:31:59AM +0100, Ed Butler wrote:
> Yesterday we unplugged a port from etherchannel, and were not 
> expecting this to affect traffic flow. However, the logs on the Cisco 
> 3750 show the OSPF adjacency went down and immediately came back up.
> 
> 20w1d: %LINEPROTO-5-UPDOWN: Line protocol on Interface 
> GigabitEthernet1/0/24, changed state to down
> 20w1d: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/24, changed state 
> to down
> 20w1d: %OSPF-5-ADJCHG: Process 1, Nbr x.y.x.y on Vlan164 from FULL to 
> DOWN, Neighbor Down: Dead timer expired
> 20w1d: %OSPF-5-ADJCHG: Process 1, Nbr x.y.x.y on Vlan164 from LOADING 
> to FULL, Loading Done
> 
> 1) Is this supposed to happen?
> 2) Is there a way of gracefully removing a port from an etherchannel 
> (eg
> shutdown) to ensure problems don't get caused?
> 3) If the answers to the above are "Yes" and "No" respectively, should

> etherchannel be used to give some redundancy?

Are you using LACP or PAGP or nothing?

aw

>> We are using LACP with "channel-group 3 mode active"