Configure your PCs with IP addresses and default gateways.
PC-1> ip 172.30.10.3 255.255.255.0 172.30.10.1
Checking for duplicate address...
PC1 : 172.30.10.3 255.255.255.0 gateway 172.30.10.1
PC-1>
PC-2> ip 209.165.201.2 255.255.255.0 209.165.201.1
Checking for duplicate address...
PC1 : 209.165.201.2 255.255.255.0 gateway 209.165.201.1
PC-2>
PC-3> ip 172.30.30.3 255.255.255.0 172.30.30.1
Checking for duplicate address...
PC1 : 172.30.30.3 255.255.255.0 gateway 172.30.30.1
PC-3>
Step 3: Examine current state of network.
The status of the two serial links can quickly be verified using the show ip interface brief command on R2.
R2#show ip int brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 209.165.201.1 YES manual up up
FastEthernet0/1 unassigned YES unset administratively down down
Serial1/0 10.1.1.2 YES manual up up
Serial1/1 10.2.2.2 YES manual up up
Serial1/2 unassigned YES unset administratively down down
Serial1/3 unassigned YES unset administratively down down
R2#
Step 4: Verify that RIPv2 is running on the routers.
You can use the debug ip rip, show ip protocols, and show run commands to confirm that RIPv2 is running. The show ip protocols command output for R1 is shown below.
R1#show ip protocols
Routing Protocol is "rip"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Sending updates every 30 seconds, next due in 25 seconds
Invalid after 180 seconds, hold down 180, flushed after 240
Redistributing: rip
Default version control: send version 2, receive version 2
Interface Send Recv Triggered RIP Key-chain
Serial1/0 2 2
Automatic network summarization is in effect
Maximum path: 4
Routing for Networks:
10.0.0.0
172.30.0.0
Passive Interface(s):
FastEthernet0/0
Routing Information Sources:
Gateway Distance Last Update
10.1.1.2 120 00:00:18
Distance: (default is 120)
R1#
When issuing the debug ip rip command on R2, what information is provided that confirms RIPv2 is running? RIP: RIP: sending v2 update to 224.0.0.9 via Serial1/1 (10.2.2.2)
Step 5: Examine the automatic summarization of routes.
The LANs connected to R1 and R3 are composed of discontiguous R2 displays two equal-cost paths to the 172.30.0.0/16 network in the routing table. R2 displays only the major classful network address of 172.30.0.0 and does not display any of the subnets for this network.
R2#show ip route
Codes: C - connected, S - static, 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
i - IS-IS, su - IS-IS summary, 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 not set
R 172.30.0.0/16 [120/1] via 10.2.2.1, 00:00:15, Serial1/1
[120/1] via 10.1.1.1, 00:00:16, Serial1/0
C 209.165.201.0/24 is directly connected, FastEthernet0/0
10.0.0.0/30 is subnetted, 2 subnets
C 10.2.2.0 is directly connected, Serial1/1
C 10.1.1.0 is directly connected, Serial1/0
R2#
R1 displays only its own subnets for the 172.30.0.0 network. R1 does not have any routes for the 172.30.0.0 subnets on R3.
R1#show ip route
Codes: C - connected, S - static, 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
i - IS-IS, su - IS-IS summary, 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 not set
172.30.0.0/24 is subnetted, 1 subnets
C 172.30.10.0 is directly connected, FastEthernet0/0
R 209.165.201.0/24 [120/1] via 10.1.1.2, 00:00:25, Serial1/0
10.0.0.0/30 is subnetted, 2 subnets
R 10.2.2.0 [120/1] via 10.1.1.2, 00:00:25, Serial1/0
C 10.1.1.0 is directly connected, Serial1/0
R1#
R3 only displays its own subnets for the 172.30.0.0 network. R3 does not have any routes for the 172.30.0.0 subnets on R1.
R3#show ip route
Codes: C - connected, S - static, 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
i - IS-IS, su - IS-IS summary, 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 not set
172.30.0.0/24 is subnetted, 1 subnets
C 172.30.30.0 is directly connected, FastEthernet0/0
R 209.165.201.0/24 [120/1] via 10.2.2.2, 00:00:06, Serial1/1
10.0.0.0/30 is subnetted, 2 subnets
C 10.2.2.0 is directly connected, Serial1/1
R 10.1.1.0 [120/1] via 10.2.2.2, 00:00:06, Serial1/1
R3#
Step 6: Disable automatic summarization.
Disable auto summarization on all routers. The no auto-summary command is used to turn off automatic summarization in RIPv2. Issue the clear ip route * command to clear the routing table.
R1(config)#router rip
R1(config-router)#no auto-summary
R1(config-router)#^Z
R1#clear ip route *
R2(config)#router rip
R2(config-router)#no auto-summary
R2(config-router)#^Z
R2#clear ip route *
R3(config)#router rip
R3(config-router)#no auto-summary
R3(config-router)#^Z
R3#clear ip route *
Examine the routing tables. Remember will it take some time to converge the routing tables after clearing them.
R1#show ip route
Codes: C - connected, S - static, 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
i - IS-IS, su - IS-IS summary, 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 not set
172.30.0.0/16 is variably subnetted, 3 subnets, 2 masks
R 172.30.30.0/24 [120/2] via 10.1.1.2, 00:00:01, Serial1/0
R 172.30.0.0/16 [120/2] via 10.1.1.2, 00:00:01, Serial1/0
C 172.30.10.0/24 is directly connected, FastEthernet0/0
R 209.165.201.0/24 [120/1] via 10.1.1.2, 00:00:01, Serial1/0
10.0.0.0/30 is subnetted, 2 subnets
R 10.2.2.0 [120/1] via 10.1.1.2, 00:00:01, Serial1/0
C 10.1.1.0 is directly connected, Serial1/0
R1#
R2#show ip route
Codes: C - connected, S - static, 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
i - IS-IS, su - IS-IS summary, 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 not set
172.30.0.0/16 is variably subnetted, 3 subnets, 2 masks
R 172.30.30.0/24 [120/1] via 10.2.2.1, 00:00:02, Serial1/1
R 172.30.0.0/16 [120/1] via 10.2.2.1, 00:02:12, Serial1/1
R 172.30.10.0/24 [120/1] via 10.1.1.1, 00:00:03, Serial1/0
C 209.165.201.0/24 is directly connected, FastEthernet0/0
10.0.0.0/30 is subnetted, 2 subnets
C 10.2.2.0 is directly connected, Serial1/1
C 10.1.1.0 is directly connected, Serial1/0
R2#
R3#show ip route
Codes: C - connected, S - static, 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
i - IS-IS, su - IS-IS summary, 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 not set
172.30.0.0/24 is subnetted, 2 subnets
C 172.30.30.0 is directly connected, FastEthernet0/0
R 172.30.10.0 [120/2] via 10.2.2.2, 00:00:16, Serial1/1
R 209.165.201.0/24 [120/1] via 10.2.2.2, 00:00:16, Serial1/1
10.0.0.0/30 is subnetted, 2 subnets
C 10.2.2.0 is directly connected, Serial1/1
R 10.1.1.0 [120/1] via 10.2.2.2, 00:00:16, Serial1/1
R3#
Step 7: Verify connectivity.
From PC-1, is it possible to ping PC-2? Yes
PC-1> ping 209.165.201.2
84 bytes from 209.165.201.2 icmp_seq=1 ttl=62 time=36.505 ms
84 bytes from 209.165.201.2 icmp_seq=2 ttl=62 time=27.503 ms
84 bytes from 209.165.201.2 icmp_seq=3 ttl=62 time=33.505 ms
84 bytes from 209.165.201.2 icmp_seq=4 ttl=62 time=39.505 ms
84 bytes from 209.165.201.2 icmp_seq=5 ttl=62 time=38.505 ms
PC-1>
From PC-1, is it possible to ping PC-3? Yes
PC-1> ping 172.30.30.3
172.30.30.3 icmp_seq=1 timeout
84 bytes from 172.30.30.3 icmp_seq=2 ttl=61 time=46.003 ms
84 bytes from 172.30.30.3 icmp_seq=3 ttl=61 time=62.004 ms
84 bytes from 172.30.30.3 icmp_seq=4 ttl=61 time=68.004 ms
84 bytes from 172.30.30.3 icmp_seq=5 ttl=61 time=48.003 ms
PC-1>
Step 8: Configure and redistribute a default route for Internet access.
Configure RIPv2 on R2 in a way that does not advertise the 209.165.201.0 network.
From R2, create a static route to network 0.0.0.0 0.0.0.0, using the ip route command. This forwards any unknown destination address traffic to the R2 fa0/0 toward PC-2, simulating the Internet.
R2(config)#ip route 0.0.0.0 0.0.0.0 209.165.201.2
R2 will advertise a route to the other routers if the default-information originate command is added to its RIP configuration.
R1#show ip route
Codes: C - connected, S - static, 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
i - IS-IS, su - IS-IS summary, 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 10.1.1.2 to network 0.0.0.0
172.30.0.0/24 is subnetted, 2 subnets
R 172.30.30.0 [120/2] via 10.1.1.2, 00:00:19, Serial1/0
C 172.30.10.0 is directly connected, FastEthernet0/0
10.0.0.0/30 is subnetted, 2 subnets
R 10.2.2.0 [120/1] via 10.1.1.2, 00:00:19, Serial1/0
C 10.1.1.0 is directly connected, Serial1/0
R* 0.0.0.0/0 [120/1] via 10.1.1.2, 00:00:19, Serial1/0
R1#
Keyword
show ip route , RIPv2 , passive-interface , router rip , LAN interface , yaser rahmati , cisco , ccna , default gateway , ip address , show ip interface brief , subnet , یاسر رحمتی
