Wed Jun 25, 2008 12:01 pm
You can put more than one ip in each interface, but i can't think of any way of doing the switch, without even a second of lost connectivity... maybe you should inform your costumers that there will be loss of connectivity for some amount of time.
My suggestion is calculate the time needed, multiply it by 3 at least, and then inform them about it. They won't be dissapointed if you've informed them, on the other hand, if something goes wrong and they don't know about it, prepare your self for lots of bad reputation...