In fact you can use HSRP on the 2500 series. Thing is that they do not
support virtual MAC addresses (as you said), this is only supported on the
7000 series (or higher). This means that one of the routers (depending on
the priority) will respond to the ARP request of the clients with its own
MAC address. If this router fails, then the other one will take over, ie
respond with its own MAC address to the ARP request to the (virtual) IP
address of the HSRP group.
You can figure out the problem: as long as the MAC address of the first
router is in the ARP cache of the client, nothing will work if the router
fails, even if the second one takes over. It takes a new arp request to the
'new' MAC address of the HSRP group for things to start working again.
Hope this clears things out a bit?
"Choy, Wai Yew" wrote in message ...
Hi all,
The subject line say it allCan I implement HSRP on a pair of C2500
routers? I read somewhere that it cannot be done because something to do
with of the virtual MAC address..
But when I go into the C2500 routers, it has the HSRP command "ip
standby"
Thanx...Best Regards...
Choy Wai Yew
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