CISCO Router IOS Upgradation
Posted on 2014-01-17
I have two sites, both connected with MPLS line using cosco router 2821
I would like to upgrade current IOS Version 12.4(13r)T
My question is, if I upgrade IOS in one location at a time, mismatching IOS in both routers will cause any outage ?
Which will be the recommended IOS version of upgrade?