Observe advertisement of Default Route by automatic routing protocol, still using RIPv1 (CNA-02-004)

CCNA Exploration 4.0, Semester 2, "Observe advertisement of Default Route by automatic routing protocol, still using RIPv1" Packet Tracer 5.0 practice file (CNA-02-004).

• CNA-02-004.pkt, (Backup Link)

In this example we do observation only. You will see how I use RIPv1 to advertise "Default Route".

Making that happen depends on 2 keys:

1. The "Default Route" should be already in R2's routing table.
2. R2 is configured with "default-information originate" statement.
   

So the key configurations on R2 are:

ip route 0.0.0.0 0.0.0.0 172.30.2.1 
router rip
 network 172.30.0.0
 network 192.168.4.0
 default-information originate

Then we can see the "Default Route" on R3:

R3>show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
       * - candidate default, U - per-user static route, o - ODR
       P - periodic downloaded static route

Gateway of last resort is 192.168.4.2 to network 0.0.0.0

R    172.30.0.0/16 [120/1] via 192.168.4.2, 00:00:19, Serial0/0/0
C    192.168.4.0/24 is directly connected, Serial0/0/0
C    192.168.5.0/24 is directly connected, FastEthernet0/0
R*   0.0.0.0/0 [120/1] via 192.168.4.2, 00:00:19, Serial0/0/0
R3>