Virtual IP address in Backup interface

[vijay kumar]

Hi Experts ,

We are going to use interface level redundancy using "backup interface" feature in the router.

I am able to do all the configuration , except GLBP virtual ip address , I am getting the below error

% Address 192.168.1.1 in group 100 - interface FastEthernet0/0

Router Config:

Interface Fa 0/0

backup interface fa 0/1

ip address 192.168.1.2 255.255.255.0

glbp 10 ip 192.168.1.1

Interface fa 0/1

ip address 192.168.1.2 255.255.255.0

But not able to configure the GLBP VIP.

Any suggestion on this.

Thanks,

Vijay

[Mark Malone]

glbp does load balancing across its member interfaces , i doubt backup interface would be supported to work along side this as its supposed to be only used if necessary like an ISDN backup link if your primary link fails , using both together would contradict each other