Misc Stuff

BASIC IP SLA SETUP

The aim here is to pass all traffic generated in POLICY ROUTER to go through ISP1, until it is up.IP SLA will be used as a proactive process to check whether ISP1 is up or down.

Here is the configuration:

PR(config)#ip sla monitor 1

PR(config-sla-monitor)#type echo protocol ipICMPEcho 200.11.2

PR(config-sla-monitor-echo)#timeout 1000 (in ms)

PR(config-sla-monitor-echo)#frequence 3

PR(config)#ip sla monitor schedule 1 start-time now life forever

PR(config)#track 1 rtr 1 reachability

PR(config)#ip acc-list ext ROUTER

PR(config-ext-nacl)#permit ip any any

PR(config)#route-map ROUTER_TRAFFIC permit 10

PR(config-route-map)#match ip address ROUTER

PR(config-route-map)#set ip next-hop verify-availibility 200.1.1.2 10 track 1

PR(config-route-map)#set ip next-hop 201.1.1.2

now to apply the route-map for the router itself

PR(config)#ip local policy route-map ROUTER_TRAFFIC

now to test we issue ping to ISP1 and ISP2, ISP1 should be success and ISP2 should fail.Then shutdown interface to ISP1 and ping ISP2, this time the ping to ISP2 should succeed.