Lab 66 - RIPv2 Conditional Default Routing with IP SLA

Prerequisites: CCNP level skills.

Topology

Pic. 1 - Topology Diagram.

Icons designed by: Andrzej Szoblik - http://www.newo.pl

Task1
Configure R3 to advertise a default to its RIP neighbors. The default route should be withdrawn if R5 is inaccessible but the link between R3 and R5 is up. Do not advertise the default route towards R5.

Lab Solution

Task1

Configure R3 to advertise a default to its RIP neighbors. The default route should be withdrawn if R5 is inaccessible but the link between R3 and R5 is up. Do not advertise the default route towards R5.

R3 Configuration:

!

ip sla monitor 1

 type echo protocol ipIcmpEcho 10.1.13.3
 timeout 2000
 frequency 10

ip sla monitor schedule 1 life forever start-time now

!

track 10 rtr 1

!

ip route 3.3.3.3 255.255.255.255 Null0 track 10
!

ip access-list standard BOGUS
 permit 3.3.3.3
!

route-map DEFAULT_ROUTE permit 10
 match ip address BOGUS
 set interface Serial0/1 Serial0/2
!

router rip
 version 2
 passive-interface Loopback0
 network 10.0.0.0
 network 172.16.0.0
 default-information originate route-map DEFAULT_ROUTE
 no auto-summary

!

Verification:

Pic. 2 - R1's Routing Table.

Have applied the ACL on R5's F1/0 interface that blocks IP (ICMP echo fails).

Pic. 3 - Track Object Reports Failure.

Pic. 4 - R3 Default Route Withdrawal.