We have a single 6506 which we will replace with two 6506 in HSRP redundancy mode. Until now we don't have a loopback interface configured on the 6506. Most management articles advise the use of the loopback interface so we want to configure it on both the 6506's. What we can't find, is what kind of address to put on both machines. Loopback addresses seem to be host adresses but how are they related to each other ?
If we give router A address x.x.y.1, can we give router B address x.x.y.2 or do we need to give it x.x.Z.1 so i need a separate subnet for each interface ? If one uses active routing, is this host route also propagated ?
I've been looking on the cisco website and google, but i can't find a decent reference on configuration and use of loopback interfaces. If you have a pointer for me, please let me know.
Wim Holemans Network Manager University of Antwerp