I have two 2821s configured with the LAN interface in HSRP, tracking the WAN interface.
They are the same model with the same hardware & software and the output of the ''show standby all'' is that the primary is active and the secondary is standby. Seems to be working fine, but if I shut down the LAN interface, then the secondary won't become active.
My question is... the only difference between both routers is that one has an ATM working interface attached to an ADSL modem, and the other does not.
Could this be the cause of the problem? Is a requirement for HSRP to be exactly the same Hardware or do I need to look somewhere else?
Thank you All!
The default decrement value is 10, when you lose your outside failed, it will not switch over because it is only decreasing 10 from 150, and the default priority on an interface is 100.
To get this to work, set your higher priority interface to 105 and try again.
You should also put the NAT on the other interface to get everything to work correctly.