The document describes setting up routing between two routers. It involves: 1. Configuring WAN interfaces on each router and assigning IP addresses between them. 2. Setting up LAN segments behind each router by configuring LAN interfaces and assigning IP addresses. 3. Enabling static routing on each router to allow routing between the LAN segments since dynamic routing protocols have not been configured yet.

1. Packet Tracer
Simulation Lab
L3 Routing
Johnson Liu
CCIE#11440(R&S, SP)
CCSI#31346

2. Agenda Slide
• Setup two Routers with WAN WIC(WAN Interface Card)
• Setup each LAN segment behind both Routers
• Assign WAN IP address between Routers
• Enable Static route in both Routers
• Enable RIP routing protocols
• Enable OSPF routing protocols
3/6/2013 Confidential | Copyright 2012 Trend Micro Inc.

3. Setup two Routers with WAN
WIC(WAN Interface Card)

4. Setup two Routers with WAN WIC(WAN
Interface Card)
3/6/2013 Confidential | Copyright 2012 Trend Micro Inc. 4

5. Setup two Routers with WAN WIC(WAN
Interface Card)
3/6/2013 Confidential | Copyright 2012 Trend Micro Inc. 5

6. Router basic configurations
Router>en
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname R1
R1(config)#enable secret cisco
R1(config)#line vty 0 4
R1(config-line)#password cisco
R1(config-line)#exit
R1(config)#exit
R1(config)#interface loopback0 => Loopback interface for management
R1(config-if)#ip address 1.1.1.1 255.255.255.255
R1(config-if)#^Z =>(Ctrl-Z)
R1#
%SYS-5-CONFIG_I: Configured from console by console
R1#telnet 1.1.1.1
Trying 1.1.1.1 ...Open
User Access Verification
Password:
R1>en
Password:
R1#
R1#
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7. Assign WAN IP address between Routers

8. Setup two Routers with WAN WIC(WAN
Interface Card)
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9. Check interface list and status in brief
R1#sh ip int brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 unassigned YES unset administratively down down
FastEthernet0/1 unassigned YES unset administratively down down
Serial0/0/0 unassigned YES unset administratively down down
Serial0/0/1 unassigned YES unset administratively down down
Loopback0 1.1.1.1 YES manual up up
Vlan1 unassigned YES unset administratively down down
R1#
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10. Common Leased Line Physical Topology
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11. DCE vs DTE
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12. Routers w/ V.35 Serial cable
setup back-to-back connection
Serial Male Female Serial
(DTE) V.35 V.35 (DCE)
Clock Rate
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13. Check serial interface type in each router
R1#sh controllers s0/0/0
Interface Serial0/0/0
Hardware is PowerQUICC MPC860
DCE V.35, no clock
idb at 0x81081AC4, driver data structure at 0x81084AC0
SCC Registers:
… (omit)
R2#show controllers s0/0/0
Interface Serial0/0/0
Hardware is PowerQUICC MPC860
DTE V.35 clocks stopped.
idb at 0x81081AC4, driver data structure at 0x81084AC0
SCC Registers:
… (omit)
3/6/2013 Confidential | Copyright 2012 Trend Micro Inc. 13

14. Configure R1 Serial0/0/0
R1>en
Password:
R1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#int s0/0/0
R1(config-if)#no shutdown
%LINK-5-CHANGED: Interface Serial0/0/0, changed state to down
R1(config-if)#clock rate 64000 => Since R1 s0/0/0 is DCE, so it must config clock rate
R1(config-if)#ip address 10.100.1.1 255.255.255.252
R1(config-if)#^Z
R1#
%SYS-5-CONFIG_I: Configured from console by console
R1#sh ip int brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 unassigned YES unset administratively down down
FastEthernet0/1 unassigned YES unset administratively down down
Serial0/0/0 10.100.1.1 YES manual down down
Serial0/0/1 unassigned YES unset administratively down down
Loopback0 1.1.1.1 YES manual up up
Vlan1 unassigned YES unset administratively down down
3/6/2013 Confidential | Copyright 2012 Trend Micro Inc. 14

15. Configure R2 Serial0/0/0
R2>en
Password:
R2#conf t
R2(config)#int s0/0/0
R2(config-if)#no shutdown
%LINK-5-CHANGED: Interface Serial0/0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up
R2(config-if)#ip address 10.100.1.2 255.255.255.252
R2(config-if)#^Z
R2#
%SYS-5-CONFIG_I: Configured from console by console
R2#sh ip int brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 unassigned YES unset administratively down down
FastEthernet0/1 unassigned YES unset administratively down down
Serial0/0/0 10.100.1.2 YES manual up up
Serial0/0/1 unassigned YES unset administratively down down
Loopback0 2.2.2.2 YES manual up up
Vlan1 unassigned YES unset administratively down down
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16. Check R1 serial interface status
R1#sh int s0/0/0
Serial0/0/0 is up, line protocol is up (connected)
Hardware is HD64570
Internet address is 10.100.1.1/30
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, loopback not set, keepalive set (10 sec)
Last input never, output never, output hang never
Last clearing of "show interface" counters never
… (omit)
R1#ping 10.100.1.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.100.1.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 20/20/20 ms
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17. WAN interconnection was ready!
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18. Setup each LAN segment behind Routers

19. Setup LAN switch & host in both site
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20. Check R1 interface list and status in brief
R1#sh ip int brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 unassigned YES unset administratively down down
FastEthernet0/1 unassigned YES unset administratively down down
Serial0/0/0 10.100.1.1 YES manual up up
Serial0/0/1 unassigned YES unset administratively down down
Loopback0 1.1.1.1 YES manual up up
Vlan1 unassigned YES unset administratively down down
R1#
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21. Configure R1 FastEthernet0/0/0
R1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#int f0/0
R1(config-if)#no shutdown
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
R1(config-if)#ip address 10.100.2.254 255.255.255.0
R1(config-if)#^Z
R1#
%SYS-5-CONFIG_I: Configured from console by console
R1#sh ip int brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 10.100.2.254 YES manual up up
FastEthernet0/1 unassigned YES unset administratively down down
Serial0/0/0 10.100.1.1 YES manual up up
Serial0/0/1 unassigned YES unset administratively down down
Loopback0 1.1.1.1 YES manual up up
Vlan1 unassigned YES unset administratively down down
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22. Configure R2 FastEthernet0/0/0
R2#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R2(config)#int f0/0
R2(config-if)#no shutdown
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
R2(config-if)#ip address 10.100.3.254 255.255.255.0
R2(config-if)#^Z
R2#
%SYS-5-CONFIG_I: Configured from console by console
R2#sh ip int brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 10.100.3.254 YES manual up up
FastEthernet0/1 unassigned YES unset administratively down down
Serial0/0/0 10.100.1.2 YES manual up up
Serial0/0/1 unassigned YES unset administratively down down
Loopback0 2.2.2.2 YES manual up up
Vlan1 unassigned YES unset administratively down down
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23. Configure switches & hosts
 Keep switch default configuration without any change, because we use
switch default VLAN 1 only without management SVI and any
dedicated VLAN/Trunk port configuration
 Configure host IP Address behind R1
 IP Address: 10.100.2.1
 Subnet Mask: 255.255.255.0
 Default Gateway: 10.100.2.254 (R1 F0/0 IP Address)
 Configure host IP Address behind R2
 IP Address: 10.100.3.1
 Subnet Mask: 255.255.255.0
 Default Gateway: 10.100.3.254 (R1 F0/0 IP Address)
 Now only R1 can ping PC1, R2 can ping PC2, but PC1 cannot ping
PC2, because R1 and R2 still not have complete routing information
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24. Enable Static route in both Routers

25. How to test in routers (1/2) ?
 When execute ping function in routers under default parameter, it will
use outgoing interface IP address as source IP(ex:R1 s0/0/0), so it will
always works!
R1#ping 10.100.3.1 => The host behind R2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.100.3.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 52/58/61 ms
 That’s because the other router (R2) has WAN(10.100.1.0/30) and
LAN(10.100.1.0/30) routing information so it can route the packet
between these IP networks.
R2#sh ip route
Gateway of last resort is not set
2.0.0.0/32 is subnetted, 1 subnets
C 2.2.2.2 is directly connected, Loopback0
10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 10.100.1.0/30 is directly connected, Serial0/0/0
C 10.100.3.0/24 is directly connected, FastEthernet0/0
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26. How to test in routers (2/2) ?
 You can use extension ping as below to specify any source IP which
owns by this router interface:
R1#ping
Protocol [ip]: => Leave it alone, it means IP protocol
Target IP address: 10.100.3.1
Repeat count [5]:
Datagram size [100]:
Timeout in seconds [2]:
Extended commands [n]: y
Source address or interface: 10.100.2.254 => Using R1 F0/0 IP address as Source IP
Type of service [0]:
Set DF bit in IP header? [no]:
Validate reply data? [no]:
Data pattern [0xABCD]:
Loose, Strict, Record, Timestamp, Verbose[none]:
Sweep range of sizes [n]:
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.100.3.1, timeout is 2 seconds:
Packet sent with a source address of 10.100.2.254
.....
Success rate is 0 percent (0/5)
 So, let’s fix it by static route in both routers !
3/6/2013 Confidential | Copyright 2012 Trend Micro Inc. 26

27. Configure R1 static route
R1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#ip route 10.100.3.0 255.255.255.0 10.100.1.2
R1(config)#^Z
R1#
%SYS-5-CONFIG_I: Configured from console by console
R1#sh 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
1.0.0.0/32 is subnetted, 1 subnets
C 1.1.1.1 is directly connected, Loopback0
10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
C 10.100.1.0/30 is directly connected, Serial0/0/0
C 10.100.2.0 is directly connected, FastEthernet0/0
S 10.100.3.0 [1/0] via 10.100.1.2
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28. Configure R2 static route
R2#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R2(config)#ip route 10.100.2.0 255.255.255.0 10.100.1.1
R2(config)#^Z
R2#
%SYS-5-CONFIG_I: Configured from console by console
R2#sh 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
2.0.0.0/32 is subnetted, 1 subnets
C 2.2.2.2 is directly connected, Loopback0
10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
C 10.100.1.0/30 is directly connected, Serial0/0/0
S 10.100.2.0/24 [1/0] via 10.100.1.1
C 10.100.3.0/24 is directly connected, FastEthernet0/0
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29. Check the routing in Router and host
R1#ping
Protocol [ip]: => Leave it alone, it means IP protocol
Target IP address: 10.100.3.1
Repeat count [5]:
Datagram size [100]:
Timeout in seconds [2]:
Extended commands [n]: y
Source address or interface: 10.100.2.254 => Using R1 F0/0 IP address as Source IP
Type of service [0]:
Set DF bit in IP header? [no]:
Validate reply data? [no]:
Data pattern [0xABCD]:
Loose, Strict, Record, Timestamp, Verbose[none]:
Sweep range of sizes [n]:
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.100.3.1, timeout is 2 seconds:
Packet sent with a source address of 10.100.2.254
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 43/54/60 ms
PC>ping 10.100.3.1
Pinging 10.100.3.1 with 32 bytes of data:
Reply from 10.100.3.1: bytes=32 time=101ms TTL=126
Ping statistics for 10.100.3.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 100ms, Maximum = 101ms, Average = 100ms
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30. Enable RIP routing protocols

31. Clear static route configuration at first
 Before we starting to configure RIP protocol, please remove the static
route in both R1 and R2 to ensure our RIP can work for routing
exchange and packet forwarding
R1#sh run
…(omit)
!
ip route 10.100.3.0 255.255.255.0 10.100.1.2
!
…(omit)
R1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#no ip route 10.100.3.0 255.255.255.0 10.100.1.2
R1(config)#^Z
R1#
%SYS-5-CONFIG_I: Configured from console by console
R1#sh ip route
1.0.0.0/32 is subnetted, 1 subnets
C 1.1.1.1 is directly connected, Loopback0
10.0.0.0/24 is subnetted, 2 subnets
C 10.100.1.0 is directly connected, Serial0/0/0
C 10.100.2.0 is directly connected, FastEthernet0/0
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32. Configure RIP protocol
R1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#router rip
R1(config-router)#version 2
R1(config-router)#network 10.0.0.0
R1(config-router)#no auto-summary
R1(config-router)#^Z
R1#
R2#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R2(config)#router rip
R2(config-router)#version 2
R2(config-router)#network 10.0.0.0
R2(config-router)#no auto-summary
R2(config-router)#^Z
R2#
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33. Check R1 & R2 routing table
R1#sh ip route
Gateway of last resort is not set
1.0.0.0/32 is subnetted, 1 subnets
C 1.1.1.1 is directly connected, Loopback0
10.0.0.0/24 is subnetted, 3 subnets
C 10.100.1.0 is directly connected, Serial0/0/0
C 10.100.2.0 is directly connected, FastEthernet0/0
R 10.100.3.0 [120/1] via 10.100.1.2, 00:00:26, Serial0/0/0
R2#sh ip route
Gateway of last resort is not set
2.0.0.0/32 is subnetted, 1 subnets
C 2.2.2.2 is directly connected, Loopback0
10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
C 10.100.1.0/30 is directly connected, Serial0/0/0
R 10.100.2.0/24 [120/1] via 10.100.1.1, 00:00:07, Serial0/0/0
C 10.100.3.0/24 is directly connected, FastEthernet0/0
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34. Enable OSPF routing protocols

35. OSPF Topology Design
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36. Check R1 OSPF neighbor and routing table
R1#sh ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
2.2.2.2 0 FULL/ - 00:00:38 10.100.1.2 Serial0/0/0
R1#sh 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
1.0.0.0/32 is subnetted, 1 subnets
C 1.1.1.1 is directly connected, Loopback0
2.0.0.0/32 is subnetted, 1 subnets
O 2.2.2.2 [110/65] via 10.100.1.2, 00:00:31, Serial0/0/0
10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
C 10.100.1.0/30 is directly connected, Serial0/0/0
C 10.100.2.0/24 is directly connected, FastEthernet0/0
O IA 10.100.3.0/24 [110/65] via 10.100.1.2, 00:08:39, Serial0/0/0
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37. Check R2 OSPF neighbor and routing table
R2#sh ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
1.1.1.1 0 FULL/ - 00:00:36 10.100.1.1 Serial0/0/0
R2#sh 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
1.0.0.0/32 is subnetted, 1 subnets
O 1.1.1.1 [110/65] via 10.100.1.1, 00:02:13, Serial0/0/0
2.0.0.0/32 is subnetted, 1 subnets
C 2.2.2.2 is directly connected, Loopback0
10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
C 10.100.1.0/30 is directly connected, Serial0/0/0
O IA 10.100.2.0/24 [110/65] via 10.100.1.1, 00:10:06, Serial0/0/0
C 10.100.3.0/24 is directly connected, FastEthernet0/0
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38. Q&A
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39. Appendix
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40. PDU Simulation for troubleshooting
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41. PDU Simulation for troubleshooting
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42. PDU Simulation for troubleshooting
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