Prerequisites: CCNP level skills.
Topology
Task 1
Configure R1, R2 and R4 so they send RIP advertisement using unicast instead of multicast on the LAN.
Lab Solution
Task 1
Configure R1, R2 and R4 so they send RIP advertisement using unicast instead of multicast on the LAN.
R1 Configuration:
!
router rip
version 2
passive-interface FastEthernet1/0
passive-interface Loopback0
network 10.0.0.0
network 172.16.0.0
neighbor 10.1.124.4
neighbor 10.1.124.2
no auto-summary
version 2
passive-interface FastEthernet1/0
passive-interface Loopback0
network 10.0.0.0
network 172.16.0.0
neighbor 10.1.124.4
neighbor 10.1.124.2
no auto-summary
!
R2 Configuration:
!
router rip
version 2
passive-interface FastEthernet1/0
passive-interface Loopback0
network 10.0.0.0
network 172.16.0.0
neighbor 10.1.124.4
neighbor 10.1.124.1
no auto-summary
version 2
passive-interface FastEthernet1/0
passive-interface Loopback0
network 10.0.0.0
network 172.16.0.0
neighbor 10.1.124.4
neighbor 10.1.124.1
no auto-summary
!
R4 Configuration:
!
router rip
version 2
passive-interface FastEthernet1/0
passive-interface Loopback0
passive-interface Loopback1
network 10.0.0.0
network 172.16.0.0
neighbor 10.1.124.2
neighbor 10.1.124.1
no auto-summary
version 2
passive-interface FastEthernet1/0
passive-interface Loopback0
passive-interface Loopback1
network 10.0.0.0
network 172.16.0.0
neighbor 10.1.124.2
neighbor 10.1.124.1
no auto-summary
!
Note!
The 'neighbor' command turns on unicast for RIP updates. However, a router still uses multicast (224.0.0.9) as well. To turn off multicast RIP updates completely, the 'passive-interface' command is required.