OT: Changing Etherchannel configurations the safe way

Hi guys,

need your thoughts on this:

I am going to change the "allowed vlan" list on several PortChannel
interfaces. Would like to hear your thought on the best/safest way of doing
that.

One problem is that some of the switches are only reachable via the
portchannel (and therefore via the member interfaces), so if anything goes
wrong (for instance, a configuration mismatch on each end) the portchannel
will go down.

I read on one Cisco pdf
(link<http://www.cisco.com/en/US/docs/switches/blades/3120/software/release/12.2_40_ex/configuration/guide/swethchl.pdf>,
page 11) that the allowed vlan list should actually be changed on the member
interfaces also (changing on the Po only will not do it).

One of my thoughts were to do the changes on the startup config and then
merge it to the running config, so they are all applied at once at the
remote side. Will try my best to do it in synchrony to the local side, but
if timming is not good enough, at least I still have connection to the side
that also needs to be configured.

We've tried pushing the configs using SNMP and it worked on some cases, but
in another case it did not go so well and impacted a whole site.

Tks.

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Received on Sat Aug 15 2009 - 01:10:12 ART