Router failover question

[lobo66]

I have a Cisco 2621 dual ethernet router eth 0/0 is into one cat 6509 and eth 0/1 is into another cat 6509. If the primary ethernet on the 2621 is eth 0/0 how can I create a failover secerino is the primary switch fails. I was thinking of putting a backup int on eth 0/1 of the 2621?

any ideas?

 

[tschouten]

I would most likely do something like this:

ip route 0.0.0.0 0.0.0.0 10.10.10.1
!---This is the primary default route.
ip route 0.0.0.0 0.0.0.0 192.168.20.1 250
!---The floating default route to be used if the connection fails.

Depending on what routing protocol you are using I would then perform load balancing so both paths are used.

 

[lobo66]

thanks

how would I load balance, by using a higher routing metric?

 

[tschouten]

It all depends what routing protocol are you using?

EIGRP
OSPF
BGP with one of the two above?

 

[lobo66]

EIGRP

 

[tschouten]

Router(config)#router eigrp 100
Router(config-router)#maximum-paths <1-6>

Router(config-router)#traffic-share ?
balanced Share inversely proportional to metric
min All traffic shared among min metric paths

That should give you a start for what you want.

 

[lobo66]

Think I figured it out if I point all routing updates back to a loopback int I think this should handle the issue.

 

[irasman]

And your not using a routing protocol becauuusseee?