Showing posts with label Routing. Show all posts
Showing posts with label Routing. Show all posts

Thursday, May 14, 2015

Lab 18 OSPF Multiple Areas

Objective

To be able to configure OSPF in an environment with multiple areas

Topology


Basic Setting

IPs for computers and routers have been set up.
Requirements
Configure OSPF in are 0, are1 and area2.

Steps

On Route5

Router>en
Router#config t
Router(config)#router ospf 1
Router(config-router)#network 172.16.0.0 0.0.255.255 area 1

On Route6

Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#router ospf 1
Router(config-router)#network 172.16.0.0 0.0.255.255 area 1

On boundary router (Router 2)

Router(config)#router ospf 1
Router(config-router)#network 172.16.0.0 0.0.0.255 area 1
Router(config-router)#network 192.168.0.0 0.0.0.3 area 0

On Router0

Router#config t
Router(config)#router ospf 1
Router(config-router)#network 192.168.0.0 0.0.0.255 area 0

On Router1

Router#config t
Router(config)#router ospf 1
Router(config-router)#network 192.168.0.0 0.0.0.255 area 0
Router(config-router)#

On Router4

Router>en
Router#config t
Router(config)#router ospf 1
Router(config-router)#network 192.168.0.0 0.0.0.255 area 0

On Router3

Router(config)#route ospf 1
Router(config-router)#network 192.168.0.0 0.0.255.255 area 0         // for 2 interfaces
Router(config-router)#

On Router7

Router(config)#router ospf 1
Router(config-router)#network 192.168.0.20 0.0.0.3 area 0
Router(config-router)#network 10.0.0.0 0.0.0.255 area 2

On Router 9

Router#config t
Router(config)#router ospf 1
Router(config-router)#network 10.0.0.0 0.0.255.255 area 2

On Router 10

Router#config t
Router(config)#router ospf 1
Router(config-router)#network 10.0.0.0 0.0.255.255 area 2

Test OSPF

On Router6

Router#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 not set
10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
O IA 10.0.0.0/30 [110/4686] via 172.16.0.9, 00:02:11, Serial2/0
O IA 10.0.0.4/30 [110/4686] via 172.16.0.9, 00:02:11, Serial2/0
O IA 10.0.0.8/30 [110/5467] via 172.16.0.9, 00:02:11, Serial2/0
O IA 10.0.1.0/24 [110/4687] via 172.16.0.9, 00:02:11, Serial2/0
O IA 10.0.2.0/24 [110/4687] via 172.16.0.9, 00:02:11, Serial2/0
172.16.0.0/16 is variably subnetted, 5 subnets, 2 masks
O 172.16.0.0/30 [110/1562] via 172.16.0.5, 00:02:31, Serial3/0
[110/1562] via 172.16.0.9, 00:02:31, Serial2/0
C 172.16.0.4/30 is directly connected, Serial3/0
C 172.16.0.8/30 is directly connected, Serial2/0
O 172.16.1.0/24 [110/782] via 172.16.0.5, 00:02:31, Serial3/0
C 172.16.2.0/24 is directly connected, FastEthernet0/0
192.168.0.0/30 is subnetted, 6 subnets
O IA 192.168.0.0 [110/1562] via 172.16.0.9, 00:02:31, Serial2/0
O IA 192.168.0.4 [110/2343] via 172.16.0.9, 00:02:21, Serial2/0
O IA 192.168.0.8 [110/3124] via 172.16.0.9, 00:02:11, Serial2/0
O IA 192.168.0.12 [110/2343] via 172.16.0.9, 00:02:21, Serial2/0
O IA 192.168.0.16 [110/3124] via 172.16.0.9, 00:02:11, Serial2/0
O IA 192.168.0.20 [110/3905] via 172.16.0.9, 00:02:11, Serial2/0
Router#

On PC0, tracert PC2

PC>tracert 10.0.0.2
Tracing route to 10.0.0.2 over a maximum of 30 hops:
1 8 ms 6 ms 7 ms 172.16.2.1
2 12 ms 14 ms 12 ms 172.16.0.9
3 18 ms 15 ms 19 ms 192.168.0.2
4 21 ms 21 ms 20 ms 192.168.0.6
5 32 ms 22 ms 25 ms 192.168.0.10
6 29 ms 29 ms 25 ms 192.168.0.22
7 28 ms 33 ms 24 ms 10.0.0.2
Trace complete.
PC>
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Lab 17 OSPF Single Area

Objective

To be able to configure OSPF in single area network environment.

Topology



Basic Setting

IPs for computers and routers have been set up.

Requirements


  • Configure OSPF in area 0
  • Check the routing table.
  • Check the convergence for OSPF.

Steps

On Router2

Router>en
Router#config t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#router ospf 1
Router(config-router)#network 192.168.0.0 0.0.0.3 area 0
Router(config-router)#network 172.16.0.0 0.0.255.255 area 0
Router(config-router)#
OR
Router(config)#router ospf 1
Router(config-router)#network 192.168.0.1 0.0.0.0 area 0
Router(config-router)#network 172.16.0.1 0.0.0.0 area 0
Router(config-router)#

On Route0

Router>en
Router#config t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#router ospf 1
Router(config-router)#network 192.168.0.0 0.0.0.3 area 0
Router(config-router)#network 192.168.0.4 0.0.0.3 area 0
Router(config-router)#network 192.168.0.12 0.0.0.3 area 0
Router(config-router)#ex

On Router1

Router>en
Router#config t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#router ospf 1
Router(config-router)#network 192.168.0.0 0.0.0.255 area 0

On Router4

Router>en
Router#config t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#router ospf 1
Router(config-router)#network 192.168.0.0 0.0.0.255 area 0
Router(config-router)#network 172.18.0.0 0.0.255.255 area 0

On Router3

Router>en
Router#config t
Router(config)#router ospf 1
Router(config-router)#network 192.168.0.0 0.0.0.255 area 0
Router(config-router)#network 172.17.0.0 0.0.255.255 area 0
Router(config-router)#

Check the routing table

On Router3

Router#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 not set
O 172.16.0.0/16 [110/1563] via 192.168.0.13, 00:01:15, Serial2/0
C 172.17.0.0/16 is directly connected, FastEthernet0/0
O 172.18.0.0/16 [110/782] via 192.168.0.17, 00:01:15, Serial3/0
192.168.0.0/30 is subnetted, 5 subnets
O 192.168.0.0 [110/1562] via 192.168.0.13, 00:01:15, Serial2/0
O 192.168.0.4 [110/1562] via 192.168.0.13, 00:01:15, Serial2/0
O 192.168.0.8 [110/1562] via 192.168.0.17, 00:01:15, Serial3/0
C 192.168.0.12 is directly connected, Serial2/0
C 192.168.0.16 is directly connected, Serial3/0
Router#

Check OSPF neighbors

Router#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
192.168.0.13 1 FULL/- 00:00:39 192.168.0.13 Serial2/0
192.168.0.17 1 FULL/- 00:00:35 192.168.0.17 Serial3/0
Router#

Check OSPF database

Router#show ip ospf database
OSPF Router with ID (192.168.0.18) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
192.168.0.1 192.168.0.1 673 0x80000005 0x0082b6 3
192.168.0.9 192.168.0.9 317 0x80000004 0x004015 4
192.168.0.17 192.168.0.17 219 0x80000005 0x00dc82 5
192.168.0.13 192.168.0.13 214 0x80000006 0x00fbd0 6
192.168.0.18 192.168.0.18 200 0x80000005 0x0093be 5

Test OSPF convergence speed

On PC0

PC>tracert 172.17.0.2
Tracing route to 172.17.0.2 over a maximum of 30 hops:
1 6 ms 8 ms 7 ms 172.16.0.1
2 12 ms 11 ms 11 ms 192.168.0.2
3 13 ms 18 ms 15 ms 192.168.0.14
4 25 ms 28 ms 29 ms 172.17.0.2
Trace complete.
PC>
Package path : Router2=>Router0=>Router3


On Router3

Router>en
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#interface serial 2/0
Router(config-if)#shutdown

On PC0

PC>tracert 172.17.0.2
Tracing route to 172.17.0.2 over a maximum of 30 hops:
1 9 ms 6 ms 7 ms 172.16.0.1
2 15 ms 11 ms 13 ms 192.168.0.2
3 14 ms 14 ms 16 ms 192.168.0.6
4 19 ms 22 ms 15 ms 192.168.0.10
5 26 ms 25 ms 29 ms 192.168.0.18
6 29 ms 30 ms 36 ms 172.17.0.2
Trace complete.
Package path: Router2=>Router0=>Router1=>Router4=>Router3



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Lab 16 Turn Off auto-summary for EIGRP


Objective

  • To understand the auto-summary for EIGRP.
  • auto summary at the class boundary.
  • Disable auto summary in a network with discontinuous IP.

Topology


Basic Setting

IPs for computers and routers have been set up.

Requirements

Configure EIGRP on routers, and disable auto summary for discontinuous IPs.

On Router5, 2, 0 and 1

Router(config)#route eigr 10
Router(config-router)#network 172.16.0.0

On Router4 and 3

Router(config)#route eigr 10
Router(config-router)#network 172.16.0.0
Router(config-router)#network 10.0.0.0

On Router6

Router(config)#route eigr 10
Router(config-router)#network 10.0.0.0
Check summary

On Router6

Router#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 not set
10.0.0.0/24 is subnetted, 2 subnets
C 10.0.0.0 is directly connected, Serial3/0
C 10.0.1.0 is directly connected, Serial2/0
D 172.16.0.0/16 [90/20514560] via 10.0.0.1, 00:14:03, Serial3/0
[90/20514560] via 10.0.1.2, 00:13:41, Serial2/0
Router#
For 172.16.0.0/16 there are two routes, which is caused by incorrect summary.
Ping PC0 from Router6
Router#ping 172.16.10.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.10.2, timeout is 2 seconds:
..!.!
Success rate is 40 percent (2/5), round-trip min/avg/max = 13/14/15 ms
Router#ping 172.16.10.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.10.2, timeout is 2 seconds:
.!.!.
Success rate is 40 percent (2/5), round-trip min/avg/max = 14/16/19 ms
There is package discarding, which is cause yb incorrect summary.

Turn off auto summary for EIGRP

Run these commands on all routers
Router(config)#router e 10
Router(config-router)#no auto-summary
Router(config-router)#

On Router6

Router#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 not set
10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
D 10.0.0.0/8 [90/21024000] via 10.0.0.1, 00:01:20, Serial3/0
[90/21024000] via 10.0.1.2, 00:01:03, Serial2/0
C 10.0.0.0/24 is directly connected, Serial3/0
C 10.0.1.0/24 is directly connected, Serial2/0
172.16.0.0/16 is variably subnetted, 11 subnets, 2 masks
D 172.16.0.0/16 is a summary, 00:01:37, Null0
D 172.16.0.0/24 [90/22050560] via 10.0.1.2, 00:00:07, Serial2/0
D 172.16.1.0/24 [90/22048000] via 10.0.1.2, 00:00:28, Serial2/0
D 172.16.2.0/24 [90/21538560] via 10.0.1.2, 00:00:28, Serial2/0
D 172.16.3.0/24 [90/21536000] via 10.0.1.2, 00:00:45, Serial2/0
D 172.16.4.0/24 [90/21026560] via 10.0.1.2, 00:00:45, Serial2/0
D 172.16.5.0/24 [90/21024000] via 10.0.1.2, 00:01:03, Serial2/0
D 172.16.6.0/24 [90/20514560] via 10.0.1.2, 00:01:03, Serial2/0
D 172.16.8.0/24 [90/20514560] via 10.0.0.1, 00:01:20, Serial3/0
D 172.16.9.0/24 [90/21024000] via 10.0.0.1, 00:01:20, Serial3/0
D 172.16.10.0/24 [90/21026560] via 10.0.0.1, 00:01:20, Serial3/0
Router#ping 172.16.0.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.0.2, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 17/23/27 ms
Router#ping 172.16.10.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.10.2, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 14/16/20 ms
Router#
Note: after disable auto-summary, no summary at class boundaries will be made, and Router 6 can learn routing information for all network segments.
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Lab 15 Administrative Distance

Objectives


  • To understand administrative distances for routing protocols
  • To understand that there will be different best path with different routing protocosl

Default administrative distance (The AD is the lower, the priority is the higher)
Route SourceDefault Distance Values
Connected interface0
Static route1
Enhanced Interior Gateway Routing Protocol (EIGRP) summary route5
External Border Gateway Protocol (BGP)20
Internal EIGRP90
IGRP100
OSPF110
Intermediate System-to-Intermediate System (IS-IS)115
Routing Information Protocol (RIP)120
Exterior Gateway Protocol (EGP)140
On Demand Routing (ODR)160
External EIGRP170
Internal BGP200
Unknown*255
255 will never be used.

Topology


Basic Setting

IPs for computers and routers have been set up.

Requirements

Configure RIP, and check routing table on Router3
Configure EIGRP, and check the routing table again on Router3.
Setup RIP

On Router3

Router#confi t
Router(config)#router rip
Router(config-router)#network 192.168.0.0
Router(config-router)#network 192.168.5.0
Router(config-router)#network 192.168.1.0
Router(config-router)#version 2

On Router0

Router(config)#router rip
Router(config-router)#network 192.168.1.0
Router(config-router)#network 192.168.2.0
Router(config-router)#version 2

On Router1

Router#conf t
Router(config)#router rip
Router(config-router)#network 192.168.5.0
Router(config-router)#network 192.168.4.0
Router(config-router)#version 2

On Router2

Router#conf t
Router(config)#router rip
Router(config-router)#network 192.168.4.0
Router(config-router)#network 192.168.3.0
Router(config-router)#network 192.168.2.0
Router(config-router)#version 2
Check routing table on Router3
Router#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 not set
C 192.168.0.0/24 is directly connected, FastEthernet0/0
C 192.168.1.0/24 is directly connected, Serial2/0
R 192.168.2.0/24 [120/1] via 192.168.1.2, 00:00:15, Serial2/0
R 192.168.3.0/24 [120/2] via 192.168.1.2, 00:00:15, Serial2/0
            [120/2] via 192.168.5.1, 00:00:00, FastEthernet1/0
R 192.168.4.0/24 [120/1] via 192.168.5.1, 00:00:00, FastEthernet1/0
C 192.168.5.0/24 is directly connected, FastEthernet1/0
Two routes to 192.168.3.0/24 will be observed, this is because RIP is based on hops to determine the best path.

Set up EIGRP

On Router3

Router#confi t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#router eigrp 10
Router(config-router)#net
Router(config-router)#network 192.168.0.0
Router(config-router)#network 192.168.1.0
Router(config-router)#network 192.168.5.0

On Router0

Router(config)#router eigrp 10
Router(config-router)#network 192.168.1.0
Router(config-router)#network 192.168.2.0
Router(config-router)#

On Router1

Router(config)#router eigrp 10
Router(config-router)#network 192.168.4.0
Router(config-router)#network 192.168.5.0

On Router2

Router(config)#route eigrp 10
Router(config-router)#network 192.168.3.0
Router(config-router)#network 192.168.2.0
Router(config-router)#network 192.168.4.0
Router(config-router)#
Check routing table on Router3 again
Router#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 not set
C 192.168.0.0/24 is directly connected, FastEthernet0/0
C 192.168.1.0/24 is directly connected, Serial2/0
D 192.168.2.0/24 [90/21024000] via 192.168.1.2, 00:04:06, Serial2/0
D 192.168.3.0/24 [90/20517120] via 192.168.5.1, 00:00:41, FastEthernet1/0
D 192.168.4.0/24 [90/20514560] via 192.168.5.1, 00:00:41, FastEthernet1/0
C 192.168.5.0/24 is directly connected, FastEthernet1/0
Router#
There is only one route to 192.168.3.0/24 left. The route based on RIP is gone becase RIP has a lower priority than EIGRP.

Router#show ip eigrp topology
IP-EIGRP Topology Table for AS 10
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - Reply status
P 192.168.0.0/24, 1 successors, FD is 28160
via Connected, FastEthernet0/0
P 192.168.1.0/24, 1 successors, FD is 20512000
via Connected, Serial2/0
P 192.168.5.0/24, 1 successors, FD is 28160
via Connected, FastEthernet1/0
P 192.168.2.0/24, 1 successors, FD is 21024000
via 192.168.1.2 (21024000/20512000), Serial2/0
via 192.168.5.1 (21026560/21024000), FastEthernet1/0
P 192.168.3.0/24, 1 successors, FD is 20517120
via 192.168.5.1 (20517120/20514560), FastEthernet1/0
via 192.168.1.2 (4294967295/20514560), Serial2/0
P 192.168.4.0/24, 1 successors, FD is 20514560
via 192.168.5.1 (20514560/20512000), FastEthernet1/0
Router#
Two routes to 192.168.3.0/24 are listed, and these are two best routes, because EIGRP uses bandwidth and delay to determine the best path.
One of the route is the best path, and the other is backup route. When the best path is not available, backup route will be used immediately. This is why EIGRP has a faster convergence.

Add a static route

On Route3

Router(config)#ip route 192.168.3.0 255.255.255.0 192.168.1.2 ?
<1-255> Distance metric for this route
<cr>
Router(config)#ip route 192.168.3.0 255.255.255.0 192.168.1.2
Router#show ip route
C 192.168.0.0/24 is directly connected, FastEthernet0/0
C 192.168.1.0/24 is directly connected, Serial2/0
D 192.168.2.0/24 [90/21024000] via 192.168.1.2, 00:13:52, Serial2/0
S 192.168.3.0/24 [1/0] via 192.168.1.2
D 192.168.4.0/24 [90/20514560] via 192.168.5.1, 00:10:27, FastEthernet1/0
C 192.168.5.0/24 is directly connected, FastEthernet1/0
Static route has a higher priority than EIGRP, therefore route to 192.168.3.0/24 based on EIGRP is no availabel any more.

Show all IP protocols on a router

Router#show ip protocols
Routing Protocol is "eigrp 10 "
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Default networks flagged in outgoing updates
Default networks accepted from incoming updates
EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0
EIGRP maximum hopcount 100
EIGRP maximum metric variance 1
Redistributing: eigrp 10
Automatic network summarization is in effect
Automatic address summarization:
Maximum path: 4
Routing for Networks:
192.168.0.0
192.168.1.0
192.168.5.0
Routing Information Sources:
Gateway Distance Last Update
192.168.1.2 90 517117
192.168.5.1 90 724309
Distance: internal 90 external 170
Routing Protocol is "rip"
Sending updates every 30 seconds, next due in 1 seconds
Invalid after 180 seconds, hold down 180, flushed after 240
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Redistributing: rip
Default version control: send version 2, receive 2
Interface Send Recv Triggered RIP Key-chain
FastEthernet0/0 2 2
FastEthernet1/0 2 2
Serial2/0 2 2
Automatic network summarization is in effect
Maximum path: 4
Routing for Networks:
192.168.0.0
192.168.1.0
192.168.5.0
Passive Interface(s):
Routing Information Sources:
Gateway Distance Last Update
192.168.1.2 120 00:00:17
192.168.5.1 120 00:00:21
Distance: (default is 120)
Router#
Summary: a router determines the route to be used based on priority (administrative distance).

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Lab 14 EIGRP

Objectives

  • To learn configure EIGRP in cisco device only networks.

Topology

In this topology, only IPs have been configured.

Basic Setting

IPs for computers and routers have been set up.

Requirements

  • You need to configure EIGRP on routers
  • Check routes based on EIGRP in routing table 
  • Test connectivity
Steps

On Router8

Router#confi t
Router(config)#route eigrp 10
Router(config-router)#network 192.168.0.0
Router(config-router)#network 192.168.1.0
Router(config-router)#network 192.168.2.0

On Router2

Router#confi t
Router(config)#router eigrp 10
Router(config-router)#network 192.168.2.0
Router(config-router)#network 192.168.3.0
Router(config-router)#

On Router3

Router#confi t
Router(config)#router eigrp 10
Router(config-router)#network 192.168.4.0
Router(config-router)#network 192.168.3.0
Router(config-router)#

On Router4

Router#confi t
Router(config)#router eigrp 10
Router(config-router)#network 192.168.4.0
Router(config-router)#network 192.168.5.0
Router(config-router)#

On Router5

Router#confi t
Router(config)#router eigrp 10
Router(config-router)#network 192.168.5.0
Router(config-router)#network 192.168.6.0
Router(config-router)#network 192.168.7.0
Router(config-router)#

On Router7

Router#confi t
Router(config)#router eigrp 10
Router(config-router)#network 192.168.8.0
Router(config-router)#network 192.168.7.0
Router(config-router)#

On Router0

Router#confi t
Router(config)#router eigrp10
Router(config-router)#network 192.168.8.0
Router(config-router)#network 192.168.9.0
Router(config-router)#

On Router1

Router#confi t
Router(config)#router eigrp 10
Router(config-router)#network 192.168.0.0
Router(config-router)#network 192.168.9.0
Router(config-router)#

Test configuration 

Routing table on Router8

Router#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 not set
C 192.168.0.0/24 is directly connected, Serial3/0
C 192.168.1.0/24 is directly connected, FastEthernet0/0
C 192.168.2.0/24 is directly connected, Serial2/0
D 192.168.3.0/24 [90/21024000] via 192.168.2.2, 00:04:24, Serial2/0
D 192.168.4.0/24 [90/21536000] via 192.168.2.2, 00:03:59, Serial2/0
D 192.168.5.0/24 [90/22048000] via 192.168.2.2, 00:03:35, Serial2/0
D 192.168.6.0/24 [90/22050560] via 192.168.2.2, 00:03:11, Serial2/0
         [90/22050560] via 192.168.0.1, 00:00:53, Serial3/0
D 192.168.7.0/24 [90/22048000] via 192.168.0.1, 00:00:53, Serial3/0
D 192.168.8.0/24 [90/21536000] via 192.168.0.1, 00:00:53, Serial3/0
D 192.168.9.0/24 [90/21024000] via 192.168.0.1, 00:00:56, Serial3/0
Router#
Two routes to 192.168.6.0/24 with equal cost were found, and their AD was 90 and metrics were 22050560.

On Router, show EIGRP interfaces

Router#show ip eigrp interfaces
IP-EIGRP interfaces for process 10
Xmit Queue Mean Pacing Time Multicast
Pending
Interface Peers Un/Reliable SRTT Un/Reliable Flow Timer Routes
Fa0/0 0 0/0 1236 0/10 0 0
Ser2/0 1 0/0 1236 0/10 0 0
Ser3/0 1 0/0 1236 0/10 0 0
Router#

Ping PC1 from PC0

PC>ping 192.168.6.2
Pinging 192.168.6.2 with 32 bytes of data:
Request timed out.
Reply from 192.168.6.2: bytes=32 time=39ms TTL=123
Reply from 192.168.6.2: bytes=32 time=34ms TTL=123
Reply from 192.168.6.2: bytes=32 time=23ms TTL=123
Ping statistics for 192.168.6.2:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 23ms, Maximum = 39ms, Average = 32ms

Shut down S2/0 on Router3 to mimic network disorder

On Router3

Router#confi t
Router(config)#int serial 2/0
Router(config-if)#shutdown
%LINK-5-CHANGED: Interface Serial2/0, changed state to administratively down
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/0, changed state to dow

Check routing table on Router 8 immediately

Router#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 not set
C 192.168.0.0/24 is directly connected, Serial3/0
C 192.168.1.0/24 is directly connected, FastEthernet0/0
C 192.168.2.0/24 is directly connected, Serial2/0
D 192.168.3.0/24 [90/21024000] via 192.168.2.2, 00:01:03, Serial2/0
D 192.168.5.0/24 [90/22560000] via 192.168.0.1, 00:00:10, Serial3/0
D 192.168.6.0/24 [90/22050560] via 192.168.0.1, 00:13:58, Serial3/0
D 192.168.7.0/24 [90/22048000] via 192.168.0.1, 00:13:58, Serial3/0
D 192.168.8.0/24 [90/21536000] via 192.168.0.1, 00:13:58, Serial3/0
D 192.168.9.0/24 [90/21024000] via 192.168.0.1, 00:14:01, Serial3/0
Router#
Only one route to 192.168.6.0/24 was found, which means that EIGRP has a rapid convergence.

Ping PC 1 from PC0

PC>ping 192.168.6.2
Pinging 192.168.6.2 with 32 bytes of data:
Reply from 192.168.6.2: bytes=32 time=34ms TTL=123
Reply from 192.168.6.2: bytes=32 time=30ms TTL=123
Reply from 192.168.6.2: bytes=32 time=31ms TTL=123
Reply from 192.168.6.2: bytes=32 time=33ms TTL=123
Ping statistics for 192.168.6.2:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 30ms, Maximum = 34ms, Average = 32ms
Then network turn into a stable condition in no time.
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Lab 13 RIPv2 for discontinuous IP segments

Objectives

  • To learn the difference between the 2 versions of RIP
  • RIPv1 does not support variable length subnetting and discontinuous subnets
  • RIPv2 supports variable length subnetting and discontinuous subnets
Topology

Basic Setting

IPs for computers and routers have been set up.

Requirements

  • Enable RIP on all routers.
  • Show IP route on Router6 to find potential errors.
  • Upgrade RIP to RIPv2 on all routers.
  • Show IP route on Router 6 again to compare the difference with last show ip route.

Configure RIP

On Router5, 2, 0 and 1

Router(config)#route rip
Router(config-router)#network 172.16.0.0

On Router4 and 3

Router(config)#route rip
Router(config-router)#network 172.16.0.0
Router(config-router)#network 10.0.0.0

On Router6

Router(config)#route rip
Router(config-router)#network 10.0.0.0

show IP route summary

Show IP route on Router 6

Router#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 not set
10.0.0.0/24 is subnetted, 2 subnets
C 10.0.0.0 is directly connected, Serial3/0
C 10.0.1.0 is directly connected, Serial2/0
R 172.16.0.0/16 [120/1] via 10.0.1.2, 00:00:00, Serial2/0
[120/1] via 10.0.0.1, 00:00:00, Serial3/0
Router#
Two routes to 172.16.0.0/16 were found, but they were incorrect summary.

Ping PC0 from Router6

Router#ping 172.16.10.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.10.2, timeout is 2 seconds:
..!.!
Success rate is 40 percent (2/5), round-trip min/avg/max = 13/14/15 ms
Router#ping 172.16.10.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.10.2, timeout is 2 seconds:
.!.!.
Success rate is 40 percent (2/5), round-trip min/avg/max = 14/16/19 ms
Packet discarding was found, which was caused by incorrect route summary.

Enable RIPv2

Configure the following setting on all routers

Router(config)#router rip
Router(config-router)#version 2 // upgrade to version 2
Router(config-router)#no auto-summary // turn off auto-summary

On Router6

RRouter#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 not set
10.0.0.0/24 is subnetted, 2 subnets
C 10.0.0.0 is directly connected, Serial3/0
C 10.0.1.0 is directly connected, Serial2/0
172.16.0.0/24 is subnetted, 10 subnets
R 172.16.0.0 [120/4] via 10.0.1.2, 00:00:00, Serial2/0
R 172.16.1.0 [120/3] via 10.0.1.2, 00:00:00, Serial2/0
R 172.16.2.0 [120/3] via 10.0.1.2, 00:00:00, Serial2/0
R 172.16.3.0 [120/2] via 10.0.1.2, 00:00:00, Serial2/0
R 172.16.4.0 [120/2] via 10.0.1.2, 00:00:00, Serial2/0
R 172.16.5.0 [120/1] via 10.0.1.2, 00:00:00, Serial2/0
R 172.16.6.0 [120/1] via 10.0.1.2, 00:00:00, Serial2/0
R 172.16.8.0 [120/1] via 10.0.0.1, 00:00:02, Serial3/0
R 172.16.9.0 [120/1] via 10.0.0.1, 00:00:02, Serial3/0
R 172.16.10.0 [120/2] via 10.0.0.1, 00:00:02, Serial3/0Router#
Router#ping 172.16.0.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.0.2, timeout is 2 seconds:
.!!!! ///Ping 172.16.0.0/24, successful
Success rate is 80 percent (4/5), round-trip min/avg/max = 17/23/27 ms
Router#ping 172.16.10.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.10.2, timeout is 2 seconds:
.!!!! ///Ping 172.16.10.0/24, successful
Success rate is 80 percent (4/5), round-trip min/avg/max = 14/16/20 ms
Router#
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Lab 12 RIP Lesson B


Objective 

  • To configure RIP in a simple network.
  • To check metrics and administrative distance and for RIP.
  • To check load balance.
  • To understand effect of topology change on RIP


Topology


Basic Setting

IPs for computers and routers have been set up.

Requirements

  • You need to configure routers to use RIP to learn routing tables.
  • You should use Version 2 RIP.
  • You should be able to check routes based on RIP. 
  • Test connectivity
  • Monitor exchange of routing info based on RIP.

Steps

On Router8
Router#confi t
Router(config)#router rip
Router(config-router)#network 192.168.0.0
Router(config-router)#network 192.168.1.0
Router(config-router)#network 192.168.2.0
Router(config-router)#version 2

On Router2
Router#confi t
Router(config)#router rip
Router(config-router)#network 192.168.2.0
Router(config-router)#network 192.168.3.0
Router(config-router)#version 2
Router(config-router)#

On Router3
Router#confi t
Router(config)#router rip
Router(config-router)#network 192.168.4.0
Router(config-router)#network 192.168.3.0
Router(config-router)#version 2
Router(config-router)#

On Router4
Router#confi t
Router(config)#router rip
Router(config-router)#network 192.168.4.0
Router(config-router)#network 192.168.5.0
Router(config-router)#version 2
Router(config-router)#

On Router5
Router#confi t
Router(config)#router rip
Router(config-router)#network 192.168.5.0
Router(config-router)#network 192.168.6.0
Router(config-router)#network 192.168.7.0
Router(config-router)#version 2
Router(config-router)#

On Router7
Router#confi t
Router(config)#router rip
Router(config-router)#network 192.168.8.0
Router(config-router)#network 192.168.7.0
Router(config-router)#version 2
Router(config-router)#

On Router0
Router#confi t
Router(config)#router rip
Router(config-router)#network 192.168.8.0
Router(config-router)#network 192.168.9.0
Router(config-router)#version 2
Router(config-router)#

On Router1
Router#confi t
Router(config)#router rip
Router(config-router)#network 192.168.0.0
Router(config-router)#network 192.168.9.0
Router(config-router)#version 2
Router(config-router)#

Test configurations 
Show routing table on Router8
Router#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 not set
C 192.168.0.0/24 is directly connected, Serial3/0
C 192.168.1.0/24 is directly connected, FastEthernet0/0
C 192.168.2.0/24 is directly connected, Serial2/0
R 192.168.3.0/24 [120/1] via 192.168.2.2, 00:00:27, Serial2/0
R 192.168.4.0/24 [120/2] via 192.168.2.2, 00:00:27, Serial2/0
R 192.168.5.0/24 [120/3] via 192.168.2.2, 00:00:27, Serial2/0
R 192.168.6.0/24 [120/4] via 192.168.2.2, 00:00:27, Serial2/0
[120/4] via 192.168.0.1, 00:00:07, Serial3/0
R 192.168.7.0/24 [120/3] via 192.168.0.1, 00:00:07, Serial3/0
R 192.168.8.0/24 [120/2] via 192.168.0.1, 00:00:07, Serial3/0
R 192.168.9.0/24 [120/1] via 192.168.0.1, 00:00:07, Serial3/0
Router#

Ping from PC0 to PC1
PC>ping 192.168.6.2
Pinging 192.168.6.2 with 32 bytes of data:
Request timed out.
Reply from 192.168.6.2: bytes=32 time=39ms TTL=123
Reply from 192.168.6.2: bytes=32 time=34ms TTL=123
Reply from 192.168.6.2: bytes=32 time=23ms TTL=123
Ping statistics for 192.168.6.2:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 23ms, Maximum = 39ms, Average = 32ms

Shut down S2/0 on Router 3 to mimic a network disorder
On Router3
Router#confi t
Router(config)#int serial 2/0
Router(config-if)#shutdown
%LINK-5-CHANGED: Interface Serial2/0, changed state to administratively down
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/0, changed state to dow

Check routing table on Router8 immediately 
Router#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 not set
C 192.168.0.0/24 is directly connected, Serial3/0
C 192.168.1.0/24 is directly connected, FastEthernet0/0
C 192.168.2.0/24 is directly connected, Serial2/0
R 192.168.3.0/24 [120/1] via 192.168.2.2, 00:00:08, Serial2/0
R 192.168.4.0/24 [120/2] via 192.168.2.2, 00:00:08, Serial2/0
R 192.168.5.0/24 [120/3] via 192.168.2.2, 00:00:08, Serial2/0
R 192.168.6.0/24 [120/4] via 192.168.2.2, 00:00:08, Serial2/0
[120/4] via 192.168.0.1, 00:00:05, Serial3/0
R 192.168.7.0/24 [120/3] via 192.168.0.1, 00:00:05, Serial3/0
R 192.168.8.0/24 [120/2] via 192.168.0.1, 00:00:05, Serial3/0
R 192.168.9.0/24 [120/1] via 192.168.0.1, 00:00:05, Serial3/0
Router#
To 192.168.6.0/24, there are still to routes, Router 8 has not been informed of the network change because of delay.

 Ping from PC0 to PC1
PC>ping 192.168.6.2
Pinging 192.168.6.2 with 32 bytes of data:
Reply from 192.168.3.2: Destination host unreachable.
Request timed out.
Reply from 192.168.3.2: Destination host unreachable.
Reply from 192.168.6.2: bytes=32 time=35ms TTL=123
Ping statistics for 192.168.6.2:
Packets: Sent = 4, Received = 1, Lost = 3 (75% loss),
Approximate round trip times in milli-seconds:
Minimum = 16ms, Maximum = 35ms, Average = 68ms
PC>
Network will be instable for a short period.

After a while, on Router8
Router#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 not set
C 192.168.0.0/24 is directly connected, Serial3/0
C 192.168.1.0/24 is directly connected, FastEthernet0/0
C 192.168.2.0/24 is directly connected, Serial2/0
R 192.168.3.0/24 [120/1] via 192.168.2.2, 00:00:00, Serial2/0
R 192.168.4.0/24 is possibly down, routing via 192.168.2.2, Serial2/0
R 192.168.5.0/24 [120/4] via 192.168.0.1, 00:00:23, Serial3/0
R 192.168.6.0/24 [120/4] via 192.168.0.1, 00:00:23, Serial3/0
R 192.168.7.0/24 [120/3] via 192.168.0.1, 00:00:23, Serial3/0
R 192.168.8.0/24 [120/2] via 192.168.0.1, 00:00:23, Serial3/0
R 192.168.9.0/24 [120/1] via 192.168.0.1, 00:00:23, Serial3/0
Router#
There is only one route to 192.168.6.0/24 left.
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Wednesday, May 13, 2015

Lab 11 RIP Lesson A

Objective 
  • To configure RIP in a simple network.
  • To check metrics and administrative distance and for RIP.
Topology


Basic Setting

IPs for computers and routers have been set up.

Requirements
  • You need to configure routers to use RIP to learn routing tables.
  • You should use Version 2 RIP.
  • You should be able to check routes based on RIP. 
  • Test connectivity
  • Monitor exchange of routing info based on RIP.
Steps
On Route2
Router#confi t
Router(config)#router rip
Router(config-router)#network 172.16.0.0
Router(config-router)#version 2

On Router3
Router#confi t
Router(config)#router rip
Router(config-router)#network 172.16.0.0
Router(config-router)#version 2
Router(config-router)#

On Router0
Router#confi t
Router(config)#router rip
Router(config-router)#network 172.16.0.0
Router(config-router)#version 2
Router(config-router)#

On Router1
Router#confi t
Router(config)#router rip
Router(config-router)#network 172.16.0.0
Router(config-router)#version 2
Router(config-router)#

Check 
Routing table on Router2
Router#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 not set
172.16.0.0/24 is subnetted, 6 subnets
C 172.16.0.0 is directly connected, FastEthernet0/0
R 172.16.1.0 [120/2] via 172.16.3.2, 00:00:10, Serial2/0
R 172.16.2.0 [120/2] via 172.16.3.2, 00:00:10, Serial2/0
C 172.16.3.0 is directly connected, Serial2/0
R 172.16.4.0 [120/1] via 172.16.3.2, 00:00:10, Serial2/0
R 172.16.5.0 [120/1] via 172.16.3.2, 00:00:10, Serial2/0
Router#

Ping from PC1 to PC0
PC>ping 172.16.1.2
Pinging 172.16.1.2 with 32 bytes of data:
Request timed out.
Reply from 172.16.1.2: bytes=32 time=23ms TTL=125
Reply from 172.16.1.2: bytes=32 time=19ms TTL=125
Reply from 172.16.1.2: bytes=32 time=27ms TTL=125
Ping statistics for 172.16.1.2:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 19ms, Maximum = 27ms, Average = 23ms
PC>

Ping from PC1 to PC2
PC>ping 172.16.2.2
Pinging 172.16.2.2 with 32 bytes of data:
Request timed out.
Reply from 172.16.2.2: bytes=32 time=20ms TTL=125
Reply from 172.16.2.2: bytes=32 time=25ms TTL=125
Reply from 172.16.2.2: bytes=32 time=23ms TTL=125
Ping statistics for 172.16.2.2:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 20ms, Maximum = 25ms, Average = 22ms
PC>

Mointor RIP information exchange on Router2
Router#debug ip rip
RIP protocol debugging is on
Router#RIP: received v2 update from 172.16.3.2 on Serial2/0
172.16.1.0/24 via 0.0.0.0 in 2 hops
172.16.2.0/24 via 0.0.0.0 in 2 hops
172.16.4.0/24 via 0.0.0.0 in 1 hops
172.16.5.0/24 via 0.0.0.0 in 1 hops
RIP: sending v2 update to 224.0.0.9 via FastEthernet0/0 (172.16.0.1)
RIP: build update entries
172.16.1.0/24 via 0.0.0.0, metric 3, tag 0
172.16.2.0/24 via 0.0.0.0, metric 3, tag 0
172.16.3.0/24 via 0.0.0.0, metric 1, tag 0
172.16.4.0/24 via 0.0.0.0, metric 2, tag 0
172.16.5.0/24 via 0.0.0.0, metric 2, tag 0
RIP: sending v2 update to 224.0.0.9 via Serial2/0 (172.16.3.1)
RIP: build update entries
172.16.0.0/24 via 0.0.0.0, metric 1, tag 0

Turn off Debug on Router2
Router#undebug all
All possible debugging has been turned off
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Lab 10 Static Load Balancing


Objective
To practice load balance with 2 static route for a network segment
Topology

Basic Setting

IPs for PCs and routers as well as static routes have been configured

Requirements
In this lab, we only require network 192.168.1.0/24 and 192.168.6.0/24 can communicate.
You are required to set up 2 static routes to 192.168.6.0/24 on Router8, and 2 static routes to 192.168.1.0/24 on Router 5.
On router 2, 3 and 4, static routes to 192.168.1.0/24 and 192.168.6.0/24 are also required.
On router 1, 0, 7, static routes to 192.168.1.0/24 and 192.168.6.0/24 are also needed.

Steps
On Route2
Router#confi t
Router(config)#ip route 192.168.1.0 255.255.255.0 192.168.2.1
Router(config)#ip route 192.168.6.0 255.255.255.0 192.168.3.2

On Router3
Router#confi t
Router(config)#ip route 192.168.1.0 255.255.255.0 192.168.3.1
Router(config)#ip route 192.168.6.0 255.255.255.0 192.168.4.2

On Router4
Router#conf t
Router(config)#ip route 192.168.1.0 255.255.255.0 192.168.4.1
Router(config)#ip route 192.168.5.0 255.255.255.0 192.168.5.2

On Router1
Router#confi t
Router(config)#ip route 192.168.1.0 255.255.255.0 192.168.0.2
Router(config)#ip route 192.168.6.0 255.255.255.0 192.168.9.1

On Router0
Router#confi t
Router(config)#ip route 192.168.1.0 255.255.255.0 192.168.9.2
Router(config)#ip route 192.168.6.0 255.255.255.0 192.168.8.1

On Router 7
Router#confi t
Router(config)#ip route 192.168.1.0 255.255.255.0 192.168.8.2
Router(config)#ip route 192.168.6.0 255.255.255.0 192.168.7.1

On Router8, add to routes to 192.168.6.0/24
Router#confi t
Router(config)#ip route 192.168.6.0 255.255.255.0 192.168.2.2
Router(config)#ip route 192.168.6.0 255.255.255.0 192.168.0.1

On Router5, add to static routes to 192.168.1.0/24
Router#confi t
Router(config)#ip route 192.168.1.0 255.255.255.0 192.168.5.1
Router(config)#ip route 192.168.1.0 255.255.255.0 192.168.7.2

Test load balance
From PC0 to PC1
PC>ping 192.168.6.2
Pinging 192.168.6.2 with 32 bytes of data:
Reply from 192.168.6.2: bytes=32 time=34ms TTL=123
Reply from 192.168.6.2: bytes=32 time=35ms TTL=123
Reply from 192.168.6.2: bytes=32 time=31ms TTL=123
Reply from 192.168.6.2: bytes=32 time=35ms TTL=123
Ping statistics for 192.168.6.2:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 31ms, Maximum = 35ms, Average = 33ms

Shut down serial 2/0 on Router 3
Router#confi t
Router(config)#int serial 2/0
Router(config-if)#sh

Ping from PC0 to PC1
PC>ping 192.168.6.2
Pinging 192.168.6.2 with 32 bytes of data:
Reply from 192.168.3.2: Destination host unreachable. // via Router 3
Reply from 192.168.6.2: bytes=32 time=34ms TTL=123 // this route OK
Reply from 192.168.3.2: Destination host unreachable.
Request timed out.
Ping statistics for 192.168.6.2:
Packets: Sent = 4, Received = 1, Lost = 3 (75% loss),
Approximate round trip times in milli-seconds:
Minimum = 16ms, Maximum = 34ms, Average = 71ms
PC>
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Lab 9 Default Route - Example B

Objectives:
To reduce entries in routing table using default route.

Topology
Basic Setting
IPs for PCs and routers as well as static routes have been configured.
The second IP in each segment is used for the PC in each segment, and the first IP is used for the Ethernet interface for routers.
For each WAN, left IP is the first IP in the segment, and right IP is the second IP in the segment.

Requirements
Using default routes to reduce entries in routing tables.

 Steps
On Route0
Router#confi t
Router(config)#ip route 0.0.0.0 0.0.0.0 192.168.1.2

 On Router1
Router#configure t
Router(config)#ip route 0.0.0.0 0.0.0.0 192.168.2.2
Router(config)#ip route 192.168.0.0 255.255.255.0 192.168.1.1

 On Router2
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#ip rou
Router(config)#ip route 0.0.0.0 0.0.0.0 192.168.3.2
Router(config)#ip route 192.168.0.0 255.255.255.0 192.168.2.1
Router(config)#ip route 192.168.1.0 255.255.255.0 192.168.2.1
or 

 The 2 red entries are combined into one entry
Router(config)#ip route 192.168.0.0 255.255.254.0 192.168.2.1

 On Router3
Router#conf t
Router(config)#ip route 0.0.0.0 0.0.0.0 192.168.3.1
Router(config)#ip route 192.168.5.0 255.255.255.0 192.168.4.2
Router(config)#ip route 192.168.6.0 255.255.255.0 192.168.4.2

 On Router4
Router#confi t
Router(config)#ip route 0.0.0.0 0.0.0.0 192.168.4.1
Router(config)#ip route 192.168.6.0 255.255.255.0 192.168.5.2

 On Router5
Router#conf t
Router(config)#ip route 0.0.0.0 0.0.0.0 192.168.5.1

Test 
From PC0 to PC1
PC>ping 192.168.6.2
Pinging 192.168.6.2 with 32 bytes of data:
Request timed out.
Reply from 192.168.6.2: bytes=32 time=31ms TTL=122
Reply from 192.168.6.2: bytes=32 time=36ms TTL=122
Reply from 192.168.6.2: bytes=32 time=36ms TTL=122
Ping statistics for 192.168.6.2:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:

Minimum = 31ms, Maximum = 36ms, Average = 34ms
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Lab 8 Default Route - Example A

Objectives:
To reduce entries in routing table using default route.

Topology

Basic Setting
IPs for PCs and routers as well as static routes have been configured.
The second IP in each segment is used for the PC in each segment, and the first IP is used for the Ethernet interface for routers.
For each WAN, left IP is the first IP in the segment, and right IP is the second IP in the segment.

Requirements
Using default routes to reduce entries in routing tables.


Steps
On Route2
Router#confi t
Router(config)#ip route 0.0.0.0 0.0.0.0 172.16.3.2

On Router3
Router#confi t
Router(config)#ip route 0.0.0.0 0.0.0.0 172.16.4.2

On Router0
Router#confi t
Router(config)#ip route 172.16.0.0 255.255.255.0 172.16.3.1
Router(config)#ip route 172.16.1.0 255.255.255.0 172.16.4.1
Router(config)#ip route 172.16.2.0 255.255.255.0 172.16.5.2

On Router1
Router#confi t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#ip route 0.0.0.0 0.0.0.0 172.16.5.1

Test
From PC1 to PC0
PC>ping 172.16.1.2
Pinging 172.16.1.2 with 32 bytes of data:
Request timed out.
Reply from 172.16.1.2: bytes=32 time=23ms TTL=125
Reply from 172.16.1.2: bytes=32 time=24ms TTL=125
Reply from 172.16.1.2: bytes=32 time=29ms TTL=125
Ping statistics for 172.16.1.2:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 23ms, Maximum = 29ms, Average = 25ms
PC>

From PC1 to PC2
PC>ping 172.16.2.2
Pinging 172.16.2.2 with 32 bytes of data:
Request timed out.
Reply from 172.16.2.2: bytes=32 time=24ms TTL=125
Reply from 172.16.2.2: bytes=32 time=23ms TTL=125
Reply from 172.16.2.2: bytes=32 time=24ms TTL=125
Ping statistics for 172.16.2.2:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 23ms, Maximum = 24ms, Average = 23ms
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Lab 7 Troubleshooting Static Routing

Objective
To troubleshoot using ping and tracert.

Topology

Basic Setting

IPs for PCs and routers and static routes have been configured.

PC4 can ping PC5.
PC4 can ping PC1.

PC4 pings PC0, request timeout.
PC4 pings PC2, request timeout.
PC2 ping PC4:
PC>ping 172.16.22.24

Pinging 172.16.22.24 with 32 bytes of data:

Reply from 192.168.0.1: Destination host unreachable.
Reply from 192.168.0.1: Destination host unreachable.
Reply from 192.168.0.1: Destination host unreachable.
Reply from 192.168.0.1: Destination host unreachable.

Ping statistics for 172.16.22.24:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

PC>
PC0ping PC4:
PC>ping 192.168.0.2
Pinging 192.168.0.2 with 32 bytes of data:
Reply from 172.16.5.1: Destination host unreachable.
Reply from 172.16.5.1: Destination host unreachable.
Reply from 172.16.5.1: Destination host unreachable.
Reply from 172.16.5.1: Destination host unreachable.

Requirements

To pinpoint the router with incorrect settings.
Steps

Based on thes outputs, settings on Router0 should be checked.
So

Router#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 not set
172.16.0.0/24 is subnetted, 7 subnets
S 172.16.0.0 [1/0] via 172.16.3.1
S 172.16.1.0 [1/0] via 172.16.4.1
S 172.16.2.0 [1/0] via 172.16.5.2
C 172.16.3.0 is directly connected, Serial2/0
C 172.16.4.0 is directly connected, Serial3/0
C 172.16.5.0 is directly connected, Serial6/0
S 172.16.6.0 [1/0] via 172.16.3.1
S 192.168.1.0/24 [1/0] via 172.16.3.1

No route to 192.168.0.0 255.255.255.0 is found.


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Lab 6 Route Summarization for discontinuous IP addresses

Topology

Basic Setting
As Topology

IPs for routers and PCS have been configured.
Static routes for Sect A have been configured, and every segments in A can work properly.

Static route between B and A has been configured.
Sect C with a segment of 172.16.6.0/24 was added in this network.

In Router 4, the route for 172.16.0.0/21 was via 192.168.1.1，but now ,a segment of 172.16.6.0/24, and this segment is actually part of 172.16.0.0/21.
Therefore, you need to configure a route to 172.16.6.0/24.

Requirements
You need to add a route to 172.16.0.0 255.255.248.0 on router 4.
On router 2,3,0 and 1, you need to add routes to 172.16.6.0/24.

Steps
On Router8
Summarize 192.168.0.0/24 and 192.168.1.0/24 to 1 segment
Router(config)#ip route 192.168.0.0 255.255.254.0 192.168.2.1
Router(config)#ip route 172.16.0.0 255.255.248.0 192.168.2.1

On Router4
Router(config)#ip route 172.16.6.0 255.255.255.0 192.168.2.2
Router(config)#^Z
Router#show ip route
172.16.0.0/16 is variably subnetted, 2 subnets, 2 masks
S 172.16.0.0/21 [1/0] via 192.168.1.1
S 172.16.6.0/24 [1/0] via 192.168.2.2
C 192.168.0.0/24 is directly connected, FastEthernet0/0
C 192.168.1.0/24 is directly connected, Serial2/0
C 192.168.2.0/24 is directly connected, Serial3/0

On Router2
Router(config)#ip route 172.16.6.0 255.255.255.0 192.168.1.2

On Router3
Router(config)#ip route 172.16.6.0 255.255.255.0 172.16.4.2

On Router0
Router(config)#ip route 172.16.6.0 255.255.255.0 172.16.3.1

On Router1
Router(config)#ip route 172.16.6.0 255.255.255.0 172.16.5.1

Test static routes
From PC2 to PC5 and PC2
PC>ping 172.16.6.2
Pinging 172.16.6.2 with 32 bytes of data:
Reply from 172.16.6.2: bytes=32 time=18ms TTL=126
Reply from 172.16.6.2: bytes=32 time=24ms TTL=126
Reply from 172.16.6.2: bytes=32 time=20ms TTL=126
Reply from 172.16.6.2: bytes=32 time=20ms TTL=126
Ping statistics for 172.16.6.2:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 18ms, Maximum = 24ms, Average = 20ms


PC>ping 172.16.2.2
Pinging 172.16.2.2 with 32 bytes of data:
Reply from 172.16.2.2: bytes=32 time=24ms TTL=124
Reply from 172.16.2.2: bytes=32 time=30ms TTL=124
Reply from 172.16.2.2: bytes=32 time=26ms TTL=124
Reply from 172.16.2.2: bytes=32 time=25ms TTL=124
Ping statistics for 172.16.2.2:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 24ms, Maximum = 30ms, Average = 26ms
PC>
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Lab 5 Route Summarization


Topology




Basic Setting
As topology

In Section A, static routes has been configured for all segments.
In Section B, add 192.168.0.0/24 and 192.168.1.0/24。
In Secttion B, IPs for PC4 and Router4 have been configured.

 Requirements

On router4, a route to 172.16.0.0/21 is required
On Router 2, 3, 0 and 1 routes to 192.168.0.0/23 are required

Steps
On Router4

Router#config t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#ip rou
Router(config)#ip route 172.16.0.0 255.255.248.0 192.168.1.1
Router#copy running-config startup-config
Destination filename [startup-config]?
Building configuration...
[OK]

On Router2
Router(config)#ip route 192.168.0.0 255.255.254.0 192.168.1.2
Router#copy running-config startup-config
Destination filename [startup-config]?
Building configuration...
[OK]

On Router3
Router(config)#ip route 192.168.0.0 255.255.254.0 172.16.4.2
Router#copy running-config startup-config
Destination filename [startup-config]?
Building configuration...
[OK]

On Router0
Router(config)#ip route 192.168.0.0 255.255.254.0 172.16.3.1
Router#copy running-config startup-config
Destination filename [startup-config]?
Building configuration...
[OK]

On Router1
Router(config)#ip route 192.168.0.0 255.255.254.0 172.16.5.1
Router#copy running-config startup-config
Destination filename [startup-config]?
Building configuration...
[OK]

Test 
From PC2 to PC4
PC>ping 192.168.0.2
Pinging 192.168.0.2 with 32 bytes of data:
Request timed out.
Reply from 192.168.0.2: bytes=32 time=27ms TTL=124
Reply from 192.168.0.2: bytes=32 time=25ms TTL=124
Reply from 192.168.0.2: bytes=32 time=29ms TTL=124
Ping statistics for 192.168.0.2:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 25ms, Maximum = 29ms, Average = 27ms
PC>
PC>tracert 192.168.0.2
Tracing route to 192.168.0.2 over a maximum of 30 hops:
1 8 ms 8 ms 7 ms 172.16.2.1
2 9 ms 15 ms 10 ms 172.16.5.1
3 19 ms 17 ms 14 ms 172.16.3.1
4 19 ms 20 ms 18 ms 192.168.1.2
5 29 ms 32 ms 28 ms 192.168.0.2
Trace complete.
PC>

From PC4 to PC0
PC>ping 172.16.1.2
Pinging 172.16.1.2 with 32 bytes of data:
Reply from 172.16.1.2: bytes=32 time=33ms TTL=124
Reply from 172.16.1.2: bytes=32 time=26ms TTL=124
Reply from 172.16.1.2: bytes=32 time=30ms TTL=124
Reply from 172.16.1.2: bytes=32 time=31ms TTL=124
Ping statistics for 172.16.1.2:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 26ms, Maximum = 33ms, Average = 30ms
PC>
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Lab4 Static Routing

Topology


Procedures
All IPs are already set up. Only static routes need to be entered.

On Router2
Router#show ip route
Router#config t
Router(config)#ip route 172.16.1.0 255.255.255.0 172.16.3.2
Router(config)#ip route 172.16.4.0 255.255.255.0 172.16.3.2
Router(config)#ip route 172.16.5.0 255.255.255.0 172.16.3.2
Router(config)#ip route 172.16.2.0 255.255.255.0 172.16.3.2
Router#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 not set
  172.16.0.0/24 is subnetted, 6 subnets
C 172.16.0.0 is directly connected, FastEthernet0/0 C
S 172.16.1.0 [1/0] via 172.16.3.2 S
S 172.16.2.0 [1/0] via 172.16.3.2
C 172.16.3.0 is directly connected, Serial2/0
S 172.16.4.0 [1/0] via 172.16.3.2
S 172.16.5.0 [1/0] via 172.16.3.2
Router#copy running-config startup-config
Destination filename [startup-config]?
Building configuration...
[OK]

On Router3
Router#config t
Router(config)#ip route 172.16.0.0 255.255.255.0 172.16.4.2
Router(config)#ip route 172.16.3.0 255.255.255.0 172.16.4.2
Router(config)#ip route 172.16.2.0 255.255.255.0 172.16.4.2
Router(config)#ip route 172.16.5.0 255.255.255.0 172.16.4.2
Router(config)#exit
%SYS-5-CONFIG_I: Configured from console by console
Router#show ip rout
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 not set
 172.16.0.0/24 is subnetted, 6 subnets
S 172.16.0.0 [1/0] via 172.16.4.2
C 172.16.1.0 is directly connected, FastEthernet0/0
S 172.16.2.0 [1/0] via 172.16.4.2
S 172.16.3.0 [1/0] via 172.16.4.2
C 172.16.4.0 is directly connected, Serial2/0
S 172.16.5.0 [1/0] via 172.16.4.2
Router#copy running-config startup-config
Destination filename [startup-config]?
Building configuration...
[OK]

ON Router0
Router#config t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#ip route 172.16.0.0 255.255.255.0 172.16.3.1
Router(config)#ip route 172.16.1.0 255.255.255.0 172.16.4.1
Router(config)#ip route 172.16.2.0 255.255.255.0 172.16.5.2
Router(config)#
Router#copy running-config startup-config
Destination filename [startup-config]?
Building configuration...
[OK]

On Router1
Router#configure
Configuring from terminal, memory, or network [terminal]?
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#ip route 172.16.0.0 255.255.255.0 172.16.5.1
Router(config)#ip route 172.16.1.0 255.255.255.0 172.16.5.1
Router(config)#ip route 172.16.3.0 255.255.255.0 172.16.5.1
Router(config)#ip route 172.16.4.0 255.255.255.0 172.16.5.1
Router#copy running-config startup-config
Destination filename [startup-config]?
Building configuration...
[OK]

Test Static routes
From PC1 to PC0 
PC>ping 172.16.1.1
Pinging 172.16.1.1 with 32 bytes of data:
Reply from 172.16.1.1: bytes=32 time=27ms TTL=253
Reply from 172.16.1.1: bytes=32 time=14ms TTL=253
Reply from 172.16.1.1: bytes=32 time=20ms TTL=253
Reply from 172.16.1.1: bytes=32 time=16ms TTL=253
PC>tracert 172.16.1.2
Tracing route to 172.16.1.2 over a maximum of 30 hops:
1 9 ms 6 ms 8 ms 172.16.0.1
2 13 ms 10 ms 10 ms 172.16.3.2
3 17 ms 16 ms 16 ms 172.16.4.1
4 23 ms 24 ms 25 ms 172.16.1.2
Trace complete.

From PC1 to PC2
PC>ping 172.16.2.1
Pinging 172.16.2.1 with 32 bytes of data:
Reply from 172.16.2.1: bytes=32 time=15ms TTL=253
Reply from 172.16.2.1: bytes=32 time=13ms TTL=253
Reply from 172.16.2.1: bytes=32 time=16ms TTL=253
Reply from 172.16.2.1: bytes=32 time=19ms TTL=253

On Router3, delete route to 172.16.0.0/24
Router(config)#no ip route 172.16.0.0 255.255.255.0
Router#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 not set
172.16.0.0/24 is subnetted, 5 subnets
C 172.16.1.0 is directly connected, FastEthernet0/0
S 172.16.2.0 [1/0] via 172.16.4.2
S 172.16.3.0 [1/0] via 172.16.4.2
C 172.16.4.0 is directly connected, Serial2/0
S 172.16.5.0 [1/0] via 172.16.4.2

On PC1 
PC>ping 172.16.1.1
Pinging 172.16.1.1 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
PC>tracert 172.16.1.2
Tracing route to 172.16.1.2 over a maximum of 30 hops:
1 9 ms 7 ms 8 ms 172.16.0.1
2 12 ms 14 ms 14 ms 172.16.3.2
3 * * * Request timed out.
4 * * * Request timed out.
5 * * * Request timed out.

From PC0 to PC1
PC>ping 172.16.0.2
Pinging 172.16.0.2 with 32 bytes of data:
Reply from 172.16.1.1: Destination host unreachable.
Reply from 172.16.1.1: Destination host unreachable.
Reply from 172.16.1.1: Destination host unreachable.
Reply from 172.16.1.1: Destination host unreachable.
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Tuesday, May 12, 2015

Lab3 Configure IP on router



Topology

Basic Setting 

as topology

Requirements

Configure IP for interfaces as required and to ensure these interfaces are up, and your should confirm your configuration with ping.
Procedures

On PC0

 On PC1


On Router0
Router>en
Router#confi t
Router(config)#interface fastEthernet 0/0
Router(config-if)#ip add
Router(config-if)#ip address 192.168.0.1 255.255.255.0
Router(config-if)#no sh
Router(config-if)#exit
Router(config)#interface serial 2/0
Router(config-if)#clock rate 64000
Router(config-if)#ip address 172.16.0.1 255.255.255.0
Router(config-if)#no sh

On Router1 
Router>en
Router#confi t
Router(config)#int s3/0
Router(config-if)#ip address 172.16.0.2 255.255.255.0
Router(config-if)#no sh
Router(config-if)#exit
Router(config)#int serial 2/0
Router(config-if)#clock rate 64000
Router(config-if)#ip address 172.16.1.1 255.255.255.0
Router(config-if)#no sh
Router(config-if)#^Z
Router#ping 172.16.0.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.0.1, timeout is 2 seconds:
!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 2/3/5 ms
Router#

On Router2

Router>en
Router#conf t
Router(config)#int serial 3/0
Router(config-if)#ip address 172.16.1.2 255.255.255.0
Router(config-if)#no sh
Router(config-if)#exit
Router(config)#interface serial 2/0
Router(config-if)#clock rate 64000
Router(config-if)#ip address 172.16.2.1 255.255.255.0
Router(config-if)#no sh
Router#ping 172.16.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 3/4/6 ms


On Router3
Router#confi t
Router(config)#int s3/0
Router(config-if)#ip add
Router(config-if)#ip address 172.16.2.2 255.255.255.0
Router(config-if)#no sh
Router(config-if)#exit
Router(config)#interface fastEthernet 0/0
Router(config-if)#ip address 192.168.1.1 255.255.255.0
Router(config-if)#no sh
Router#ping 172.16.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.2.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 2/4/6 ms
Router#



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