RE: Need info reg interface IP used as VIP in VRRP

Ramya,
To my understanding, if the interface address is also the VIP address,
that router owniing the IP address will always assume ownership,
essentially if the VIP is an interface address its priority is always
255 (A will keep mastership).   I suspect object tracking maybe somewhat
out of scope on this list, but, to my understanding, something external
to VRRP that trys, in response to some other event, to decrement the
VRRP priority for an VIP that is also an interface address cannot change
the VRRP priority.   Put another way, if you want to use techniques like
object tracking, I don't see how this can also use VIP addresses that
are also interface addresses.  I also don't see why it is necessary to
do so; I think you can do what you want without using interface
addresses. 
Steve    


________________________________

	From: Ramya Shekar (rashekar) [mailto:[email protected]] 
	Sent: Saturday, October 27, 2007 8:01 AM
	To: [email protected]
	Subject: [VRRP] Need info reg interface IP used as VIP in VRRP
	
	
	
	Hi all,
	 
	Can anyone explain how the behavior of VRRP is when interface ip
is configured as a VIP?
	 
	In particular, I need this scenario. 
	 
	    * Router A and router B exist with VRRP configured in them.
	    
	    * VR ID is 1 & VIP is interface ip address of A in both
routers A and B and hence A is Master with priority 255 & B is Backup.
	    
	    * Through object tracking, priority of A is reduced from 255
(say the case being another interface in router A going down & by
tracking, the priority of VR 1 in router A goes down).
	 
	    *  In this case, will A be preempted by B and thus will B
become the master of the VIP which is the same as one of the interface
ip addresses of router A? Or will A continue to remain the Master as the
VIP is its interface IP address?
	 
	Thanks,
	Ramya

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