HSRP Design question

[JEFF SPRADLING]

Hello all,

I have an issue with my HSRP design (below).  Cube 1 & 2 have static routes to the ACME, R1 & 2 have weighted static to the ACME.  F1 & 2 are NOT running any redundancy protocols.  If F0 on R1 fails, HSRP will work fine, but the return traffic from the PBX will still go to Cube1 then to R2 where it will die.

Suggestions?

[Varun Uniyal · Accepted solution]

on cube 1 use ip sla with tracking object

ip sla 1
ip icmp x.x.x.x /this being the ip of R1 connected to cube 1/
ip sla schedule 1 start now life forever

track 100 ip sla 1 reachability

Under HSRP interface GE0/0 of cube 1

int GE0/0

standby 10 ip x.x.x.x
standby 10 priority
standby 10 track 100 decrement

This makes sure that if F0 of R1 is not reachable HSRP priority on Cube 1 is decrease by
such a value that it is no longer the active but make sure you have preemption enabled on cube 2

ip sla with tracking will not work on ipbase images, and CLI may differ on different IOS

for more info:

http://www.cisco.com/en/US/docs/ios/12_3/12_3x/12_3xe/feature/guide/dbackupx.html

http://www.cisco.com/en/US/tech/tk648/tk362/technologies_tech_note09186a0080094e8c.shtml

[JEFF SPRADLING]

Good idea, Varun.  I haven't fully tried it yet (license issues), but looks like it'll work great.  Thanks!

[Varun Uniyal]

Glad i could help