Portchannel question

[muellera37]

On our VSS I have a portchannel that has 4 interfaces in it, using LACP.

only two of the physcial interfaces are enabled but I wish to enable them all. If I no shut the two shutdown interfaces what will happen to the 60 plus live VMs, will nothing happen?

Will the two addidtional interfaces just become available to the portchannel?

[balaji.bandi · Accepted solution]

if they already configured part of the port-channel, i do not see any issue un shutdown the ports.

Note : just verify config and physical connection all good, so i do not see any issue here, enable 1 link at a time and monitor.

[muellera37]

Thank you very much for your quick response. 

[Flavio Miranda]

Hi

  You probably are going get an instantly  freeze due STP and Port-channel algorithm change.   I wouldn´t do it in business hours.

[balaji.bandi]

Personally never seen this behaviour of network get freezed (most case running myself with rapid-pvst)

But suggestion made was agreed that any changes while we doing on the Live network to be done in maintenance or change window.(due to some unexpected behaviours if any encountered).

[Georg Pauwen]

Hello,

I would agree with @Flavio Miranda, definitely a change to do after hours. You don't know how the VMs (what VMs are these ?) react to that network change.