vrf-based static ip routing, bounded to an IP SLA object

rogelioalvez · ‎11-16-2008

Hello everybody:

I want to static route to a destination on a certain VRF, but if my VRF next hop is "alive".

In the global world I can implement this by using "Reliable Static Routing Backup Using Object Tracking" (http://www.cisco.com/en/US/docs/ios/12_3/12_3x/12_3xe/feature/guide/dbackupx.html).

Â¿Is there this same feature in the VRF world?

Thanks in advance,

Rogelio Alvez

mheusing · ‎11-18-2008

Hi Rogelio,

This should be possible with vrf aware IP SLA. Have a look at

http://www.cisco.com/en/US/docs/ios/ipsla/command/reference/sla_05.html#wp1032476

You will also get the minimum IOS versions required for vrf aware IP SLA from the command reference.

Regards,

Martin

rogelioalvez · ‎11-18-2008

Hi Martin:

I managed to get a router and found that I can write the command. But that does not necessarily mean that it is in fact supported by Cisco. That is my fear.

The idea is to write something like the following:

ip route vrf foo 1.0.0.0 255.0.0.0 10.1.1.1 track 111

track 111 rtr 1 reachability

ip sla monitor 1

type echo proto ipIcmp 10.1.1.1

vrf foo

There are many curious things with this command. Since the RTR object is uncoupled from the IP SLA monitor process that it calls, you could static route on a VRF based on what happens on ANOTHER VRF, or even the global world, because the IP SLA could refer to another VRF, for instance.

Any help will be greatly appreciated

Regards, Rogelio