RIP - Conditional Default routing

Task:
Configure routers so that R2 will only originate default information to R3; if 10.1.1.1 is available

!R1 configuration
interface Loopback0
 ip address 10.1.1.1 255.255.255.255
!
interface Serial0/0
 ip address 1.1.1.1 255.0.0.0
no shut
!
router rip
 version 2
 network 1.0.0.0
 network 10.0.0.0
no auto-summary


!R2 configuration
interface Serial0/0
 ip address 1.1.1.2 255.0.0.0
 no shut
!
interface Serial0/1
 ip address 2.2.2.1 255.0.0.0
no shut
!
router rip
 version 2
 network 1.0.0.0
 network 2.0.0.0
 default-information originate route-map match-10


access-list 10 permit 10.1.1.1

route-map match-10
 match ip address 10
 set interface Serial0/1


!R3 configuration

interface Serial0/0
 ip address 2.2.2.2 255.0.0.0
 no shut
!
router rip
 version 2
 network 2.0.0.0

This command let us do conditional routing as it matches route map name "match-10".

Created Access List 10

Created Route map 10
if ip address in access list 10 matched then interface will be set.