link failover if ping latesy goes more than 100 ms

[pawanharlecisco]

Hi Experts,

                  Please find topology attached.we have 1 MPLS line and 1 Site to Site VPN (as backup) connected from head office to branch office

We want to monitor ping delay on interface GigabitEthernet1/0/23 whose ip address is 172.16.24.1  255.255.255.252 as shown in attached diagram.

and conditions are,

For example, If ping delay is more than 100 milliseconds on interface  GigabitEthernet1/0/23, then route  all traffic to default route i.e. S*   0.0.0.0/0 [1/0] via  10.10.10.2.

and if ping delay is less than 100 milliseconds, then route all the  traffic through    172.16.24.2, vice versa.

Please suggest me.how can we make it possible..

Regards

Pawan.

[cadet alain]

Hi,

1)create an ip sla object for pinging 172.16.24.2

ip sla 1

icmpecho  172.16.24.2

frequency 5

timeout 100

ip sla schedule 1 life forever start now

2) create a track object tracking the sla object

track 10 rtr 1 reachability

3) create a static route

ip route 0.0.0.0 0.0.0.0 track 10

4) create a backup floating static route

   ip route 0.0.0.0 0.0.0.0  10.10.10.2 10

Regards.

Alain

[pawanharlecisco]

thnkx Cadet,

                 I already did IP SLA,but it is for only failover for link. I want to do this on link latency. i.e if ping latency of mpls link goes more than 100 then it should route al the traffice thorugh site to site VPn.

Regards

Pawan

[cadet alain]

Hi,

You could use Pfr.

http://www.cisco.com/en/US/docs/ios-xml/ios/pfr/configuration/15-1mt/pfr-15-1mt-book.html

Regards.

Alain.

[pawanharlecisco]

Hi Alain,

             Please tell me rough guide for pfr...and also tell me on which cisco exam contain its detail information...

pawan

[Ivan Krimmel]

hi Pawan,

as always first comes CCO - http://www.cisco.com/en/US/docs/ios-xml/ios/pfr/configuration/15-1mt/pfr-15-1mt-book.pdf

then this community - https://supportforums.cisco.com/docs/DOC-8353 , https://supportforums.cisco.com/docs/DOC-16328

as for exams, the last I've heard was current CCIE RS lab.

HTH,

Ivan.