EDTECH 552, lab 7

Brian Mitchell EDTECH 552 Lab 7 Report

7.1 Router Physical Indicators

The LEDs on a router provide a wealth of information about the router. Being able to interpret the meanings of different LED colors and statuses is important for troubleshooting problems and gives the network engineer a snapshot of current network performance. The Cisco 1841 is a multiple-chip standalone cryptographic module. The router has a processing speed of 240MHz and provides a scalable, secure, manageable remote access server for small and medium-sized offices. You can find more information about Cisco 1841 from the following video clip: http://www.cisco.com/en/US/products/ps5853/index.html

Figure 7-1 Cisco 1841 Front Panel Indicators

Name State Description

(1) System OK Solid Green

Blinking Green

Router has successfully booted up and the software is functional.

Booting or in ROM monitor (ROMMON) mode.

(2) System Activity Solid Green

Blinking Green

Off

System is actively transferring packets.

System is servicing interrupts.

No interrupts or packet transfer occurring.

Figure 7-2 Cisco 1841 Rear Panel Physical Interface

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The Cisco 1841 router features a console port, an auxiliary port, Universal Serial Bus (USB) port, two high-speed WAN interface card/WAN interface card/Voice interface card (HWIC/WIC/VIC) slots, two 10/100 Fast Ethernet RJ45 ports, and a Compact Flash (CF) drive. Rear panel components on the Cisco 1841:

(1) Power inlet

(2) Power switch

(3) HWIC/WIC/VIC slot 0: Expansion slot 0

(4) Console port: Allows local configuration of the device.

(5) FE ports: LAN interface, which allows connections to hubs or switches through a patch or straight through cable.

(6) Locker

(7) HWIC/WIC/VIC slot 1: Expansion slot 1

(8) CF drive: An internal memory module to store the IOS image.

(9) CF LED

(10) AIM LED

(11) USB port: Not supported currently. The ports will be supported in the future for smartcard or token reader.

(12) Auxiliary port: Allows remote configuration of the device.

(13) Ground connector

EDTECH 552, lab 7

7.2 Learn Basic Router Commands

What is the Cisco IOS?

Cisco IOS, an internetwork operation system, is developed by Cisco. It uses command-line method to control a Cisco device configuration. The Cisco IOS is consistent through nearly all Cisco devices. Therefore, you can use the same commands to control Cisco switches and routers. The interface of Cisco IOS is called CLI. The router CLI can be accessed through three popular methods—the console, Telnet, and Secure Shell (SSH). Two of these methods (Telnet and SSH) use the IP network in which the router resides to reach the router. Therefore, the administrator can control the router remotely. The console is a physical port built specifically to allow access to the CLI.

EDTECH 552, lab 7

7.2.1 Control Router via Console (in Real-life Settings)

1. Prepare a Cisco 1841 router 2. Prepare a PC for administration 3. Prepare a console cable and plug the serial end into the back of your PC (RS-232, see

Fig 7-3) and plug the RJ-45 end into the console port on the Router (console port, see Fig 7-4).

Figure 7-3 Serial port on a PC

Figure 7-4 Connecting the Router to the PC

EDTECH 552, lab 7

7.2.2 Start the HyperTerminal Program (For Windows XP) Step 1. Turn on the computer and the router. Step 2. From the Windows taskbar, locate the HyperTerminal program by choosing Start > Programs > Accessories > Communications > HyperTerminal. In the Connection Description dialog box, enter a name in the Name field and click OK (see Figure 7-5). Figure 7-5 HyperTerminal Connection Description Dialog Box

EDTECH 552, lab 7

Step 3: Specify the Computer’s Connecting Interface In the Connect to dialog box, select COM1 from the Connect Using drop-down list and click OK (see Figure 7-6). Figure 7-6 HyperTerminal Connect To Dialog Box

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Step 4: Specify the Interface Connection Properties In the COM1 Properties dialog box, use the drop-down arrows to select the following (see Figure 7-7): Figure 7-7 HyperTerminal Interface Connection Property Settings

EDTECH 552, lab 7

Step 5: When the HyperTerminal session window opens (see Figure 7-8), turn on the router. If the router is already on, hit “n” on “continue with configuration dialog” and press the “Enter” key”. The router should respond. Figure 7-8

EDTECH 552, lab 7

7.2.3 Control Router via Console (in Packet Tracer)

1. Prepare a Cisco 1841 Router (see Figure 7-9) 2. Prepare a PC for administration 3. Prepare a console cable and plug the serial end into the back of your PC (RS-232)

and plug the RJ-45 end into the console port on the router (console port). Figure 7-9

7.2.4 Start the HyperTerminal Program Double click on the PC > Desktop > Terminal (see Figure 7-10) Keep default settings > Click OK (see Figure 7-11)

EDTECH 552, lab 7

Figure 7-10

Figure 7-11

EDTECH 552, lab 7

7.2.5 Basic Router Operation Please finish the following lab activities in the packet tracer (layout is the same as 7.2.3). Show running configuration file

1. Hit “n” to escape the configuration dialog

2. Enter the following commands

Router>enable Router#show version Based on the results, please answer the following questions:

Q 7.2.5a: The name of the flash IOS? Cisco IOS Software, 1841 Software (C1841-ADVIPSERVICESK9-M), Version 12.4(15)T1, RELEASE SOFTWARE (fc2) Q 7.2.5b: How many FastEthernet interfaces? 2 FastEthernet/IEEE 802.3 interface(s) Q 7.2.5c: The amount of NVRAM? 191K bytes of NVRAM.

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Q 7.2.5d: The amount of flash? 63488K bytes of ATA CompactFlash (Read/Write)

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7.2.6 Basic Security Configuration for the Privileged Mode Execute the following commands:

Router>enable Router#conf t Router(config)#hostname AUS AUS(config)#enable password cisco AUS(config)#enable secret cisco1 AUS(config)#exit AUS#logout Q 7.2.6a Record commands and results Router#conf t Enter configuration commands, one per line. End with CNTL/Z. Router(config)#hostname AUS AUS(config)#enable password cisco AUS(config)#enable secret cisco1 AUS(config)#exit AUS# %SYS-5-CONFIG_I: Configured from console by console logout AUS con0 is now available Press RETURN to get started. Q 7.2.6b If both are configured (enable password and enable secret), which will serve as the

password? Why? Enable Secret will serve as the password. Enable password is only used when you don’t specify an enable secret. Enable secret is used to protect access to privileged EXEC and configuration modes. 7.2.7 Basic Security Configuration for the Console Port (Local Control Port)

Execute the following commands:

AUS>enable Password: AUS#conf t AUS(config)#line console 0 AUS(config-line)#password cisco AUS(config-line)#login AUS(config-line)#exec-timeout 30 0 AUS(config-line)#exit

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AUS(config)#exit AUS#logout Hit “enter” and log into the user mode. Q 7.2.7a Record commands and the results. AUS>enable Password: AUS#conf t Enter configuration commands, one per line. End with CNTL/Z. AUS(config)#line console 0 AUS(config-line)#password cisco AUS(config-line)#login AUS(config-line)#exec-timeout 30 0 AUS(config-line)#exit AUS(config)#exit %SYS-5-CONFIG_I: Configured from console by console AUS#logout AUS con0 is now available Press RETURN to get started. User Access Verification Password: AUS>

EDTECH 552, lab 7

7.2.8 Basic Security Configuration for the AUX Port (Remote Control Port) Execute the following commands:

Password: AUS> AUS>enable Password: AUS#conf t AUS(config)#line vty 0 4 AUS(config-line)#password cisco AUS(config-line)#login AUS(config-line)#exec-timeout 30 0 AUS(config-line)#^Z AUS#logout

Based on the results, please answer the following questions:

Q 7.2.8a: Record commands and the results. AUS>enable Password: Password: AUS#conf t Enter configuration commands, one per line. End with CNTL/Z. AUS(config)#line vty 0 4 AUS(config-line)#password cisco AUS(config-line)#login AUS(config-line)#exec-timeout 30 0 AUS(config-line)#^Z AUS# %SYS-5-CONFIG_I: Configured from console by console logout AUS con0 is now available Press RETURN to get started. Q 7.2.8b: Based on the commands, how many concurrent Telnet connections are allowed? 5 – Numbers 0 through 4

EDTECH 552, lab 7

7.3 Routing Configuration

Please download the following network topology file:

http://edtech2.boisestate.edu/hungj/edtech552/spring2010/lab/lab7/2010/7.3.zip

The packet tracer file is to simulate the network environment in Figure 20-1 (textbook, p. 522)

Please use “Bugs” to run “Albuquerque” configurations Please use “Sam” to run “Yosemite” configurations Please use “Elmer” to run “Seville” configurations

EDTECH 552, lab 7

7.3.1 Set up IP Addresses

Execute the commands in example 20-1 (textbook, p. 522)

Albuquerque#conf t Albuquerque(config)#int fas0/0 Albuquerque(config-if)#ip address 10.1.1.251 255.255.255.0 Albuquerque(config-if)#no shutdown Albuquerque(config-if)#exit Albuquerque(config)#int serial 0/0 Albuquerque(config-if)#ip address 10.1.128.251 255.255.255.0 Albuquerque(config-if)#no shutdown Albuquerque(config-if)#exit Albuquerque(config)#int serial 0/1 Albuquerque(config-if)#ip address 10.1.130.251 255.255.255.0 Albuquerque(config-if)#clock rate 56000 <------------------ On DCE side only Albuquerque(config-if)#no shutdown Albuquerque(config-if)#^Z Albuquerque#show ip interface brief

Yosemite#conf t Yosemite(config)#int fas0/0 Yosemite(config-if)#ip address 10.1.2.252 255.255.255.0 Yosemite(config-if)#no shutdown Yosemite(config-if)#exit Yosemite(config)#int serial 0/0 Yosemite(config-if)#ip address 10.1.128.252 255.255.255.0 Yosemite(config-if)#clock rate 56000 <------------------ On DCE side only Yosemite(config-if)#no shutdown Yosemite(config-if)#exit Yosemite(config)#int serial 0/1 Yosemite(config-if)#ip address 10.1.129.252 255.255.255.0 Yosemite(config-if)#no shutdown Yosemite(config-if)#^Z Yosemite#show ip interface brief

Seville#conf t Seville(config)#int fas0/0 Seville(config-if)#ip address 10.1.3.253 255.255.255.0 Seville(config-if)#no shutdown

EDTECH 552, lab 7

Seville(config-if)#exit Seville(config)#int serial 0/0 Seville(config-if)#ip address 10.1.130.252 255.255.255.0 Seville(config-if)#no shutdown Seville(config-if)#exit Seville(config)#int serial 0/1 Seville(config-if)#ip address 10.1.129.253 255.255.255.0 Seville(config-if)#clock rate 56000 <------------------ On DCE side only Seville(config-if)#no shutdown Seville(config-if)#^Z Seville#show ip interface brief

Q 7.3.1a Run “show ip route” on all three routers and record the results Albuquerque#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, 1 subnets C 10.1.1.0 is directly connected, FastEthernet0/0 Albuquerque#

Yosemite#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 10.1.2.0 is directly connected, FastEthernet0/0 C 10.1.128.0 is directly connected, Serial0/0 Yosemite#

EDTECH 552, lab 7

Seville#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, 3 subnets C 10.1.3.0 is directly connected, FastEthernet0/0 C 10.1.129.0 is directly connected, Serial0/1 C 10.1.130.0 is directly connected, Serial0/0 Seville#

7.3.2 Add Static Routes

Execute the commands in example 20-3 (textbook, p.525).

Q 7.3.2a Add static routes to Albuquerque, Yosemite, and Seville. Run “show ip route” and record the results.

Albuquerque#show ip route static 10.0.0.0/24 is subnetted, 5 subnets S 10.1.2.0 [1/0] via 10.1.128.252 S 10.1.3.0 [1/0] via 10.1.130.253 Albuquerque# Albuquerque#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, 5 subnets C 10.1.1.0 is directly connected, FastEthernet0/0 S 10.1.2.0 [1/0] via 10.1.128.252 S 10.1.3.0 [1/0] via 10.1.130.253 C 10.1.128.0 is directly connected, Serial0/0 C 10.1.130.0 is directly connected, Serial0/1 Albuquerque#

EDTECH 552, lab 7

Yosemite#show ip route static 10.0.0.0/24 is subnetted, 5 subnets S 10.1.1.0 [1/0] via 10.1.128.251 S 10.1.3.0 [1/0] via 10.1.129.253 Yosemite#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, 5 subnets S 10.1.1.0 [1/0] via 10.1.128.251 C 10.1.2.0 is directly connected, FastEthernet0/0 S 10.1.3.0 [1/0] via 10.1.129.253 C 10.1.128.0 is directly connected, Serial0/0 C 10.1.129.0 is directly connected, Serial0/1 Yosemite# Seville#show ip route static 10.0.0.0/24 is subnetted, 5 subnets S 10.1.1.0 [1/0] via 10.1.130.251 S 10.1.2.0 [1/0] via 10.1.129.252 Seville#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, 5 subnets S 10.1.1.0 [1/0] via 10.1.130.251 S 10.1.2.0 [1/0] via 10.1.129.252 C 10.1.3.0 is directly connected, FastEthernet0/0 C 10.1.129.0 is directly connected, Serial0/1 C 10.1.130.0 is directly connected, Serial0/0 Seville#

7.3.3 Add Default Routes

EDTECH 552, lab 7

If 172.16.3.2 is the IP address of your ISP router, you can forward all packets toward 172.16.3.2 in order to connect to Internet.

Execute the commands in example 20-5 (textbook, p. 529). The topology below is for 7.3.3 only.

http://edtech2.boisestate.edu/hungj/edtech552/spring2010/lab/lab7/2010/7.3.3.zip

Q 7.3.3a: Run “show ip route” and record the results. Albuquerque#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 172.16.3.2 to network 0.0.0.0 10.0.0.0/24 is subnetted, 2 subnets C 10.1.1.0 is directly connected, FastEthernet0/0 C 10.1.128.0 is directly connected, Serial0/0 C 172.16.0.0/16 is directly connected, Serial0/1 S* 0.0.0.0/0 [1/0] via 172.16.3.2 Albuquerque# 7.3.4 Remove Static Routes

Execute the commands to remove static routes in “Albuquerque”

Albuquerque#conf t Albuquerque(config)#no ip route 10.1.2.0 255.255.255.0 10.1.128.252 Albuquerque(config)#no ip route 10.1.3.0 255.255.255.0 10.1.130.253 Albuquerque(config)#^Z Albuquerque#show ip route

Q 7.3.4a Remove static routes in Yosemite and Seville. Run “show ip route” and record results. Albuquerque#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, 3 subnets C 10.1.1.0 is directly connected, FastEthernet0/0

EDTECH 552, lab 7

C 10.1.128.0 is directly connected, Serial0/0 C 10.1.130.0 is directly connected, Serial0/1 Albuquerque# Yosemite#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, 3 subnets C 10.1.2.0 is directly connected, FastEthernet0/0 C 10.1.128.0 is directly connected, Serial0/0 C 10.1.129.0 is directly connected, Serial0/1 Yosemite# Seville#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, 3 subnets C 10.1.3.0 is directly connected, FastEthernet0/0 C 10.1.129.0 is directly connected, Serial0/1 C 10.1.130.0 is directly connected, Serial0/0 Seville#

7.3.5 Implement Dynamic Routing with RIP

Please change routers’ IP addresses based on the table below:

Router Serial 0/0 Serial 0/1 FastEthernet0/0 Albuquerque 192.168.1.1/24 192.168.3.2/24 192.168.4.1/24 Yosemite 192.168.1.2/24 192.168.2.1/24 192.168.5.1/24 Seville 192.168.3.1/24 192.168.2.2/24 192.168.6.1/24 Execute the following commands:

EDTECH 552, lab 7

Albuquerque (config)#router rip Albuquerque (config-router)#version 2 Albuquerque (config-router)#network 192.168.1.0 Albuquerque (config-router)#network 192.168.3.0 Albuquerque (config-router)#network 192.168.4.0 Albuquerque (config-router)#^Z

Yosemite(config)#router rip Yosemite(config-router)#version 2 Yosemite(config-router)# network 192.168.1.0 Yosemite(config-router)# network 192.168.2.0 Yosemite(config-router)# network 192.168.5.0 Yosemite(config-router)#^Z

Seville (config)#router rip Seville (config-router)#version 2 Seville (config-router)# network 192.168.3.0 Seville (config-router)# network 192.168.2.0 Seville (config-router)# network 192.168.6.0 Seville (config-router)#^Z

Q 7.3.5a: Run “show ip route” on all routers and record the results. Albuquerque#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 191.168.0.0/24 is subnetted, 1 subnets C 191.168.1.0 is directly connected, Serial0/0 C 192.168.3.0/24 is directly connected, Serial0/1 C 192.168.4.0/24 is directly connected, FastEthernet0/0 Albuquerque# Yosemite#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

EDTECH 552, lab 7

Gateway of last resort is not set C 192.168.1.0/24 is directly connected, Serial0/0 C 192.168.2.0/24 is directly connected, Serial0/1 C 192.168.5.0/24 is directly connected, FastEthernet0/0 Yosemite# Seville#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 R 192.168.1.0/24 [120/1] via 192.168.2.1, 00:00:20, Serial0/1 C 192.168.2.0/24 is directly connected, Serial0/1 C 192.168.3.0/24 is directly connected, Serial0/0 R 192.168.4.0/24 [120/1] via 192.168.3.2, 00:00:15, Serial0/0 R 192.168.5.0/24 [120/1] via 192.168.2.1, 00:00:20, Serial0/1 C 192.168.6.0/24 is directly connected, FastEthernet0/0 Seville#

Why we change router’s IP addresses

The example in Figure 20-1 (textbook, p. 522) uses Class A IP addresses. The submasks showed these IP addresses were subnetted (submasks are 255.255.255.0, not 255.0.0.0). In order to avoid confusion, we use Class C IP addresses for 7.3.5 questions.

If you want to implement dynamic routing using Figure 20-1, the commands are listed below:

Albuquerque (config)#router rip Albuquerque (config-router)#version 2 Albuquerque (config-router)#network 10.0.0.0 <-------------------------- Class A IP Address Albuquerque (config-router)#no auto-summary <-------------------------- Show correct IP classes Albuquerque (config-router)#^Z

Yosemite(config)#router rip Yosemite(config-router)#version 2 Yosemite(config-router)#network 10.0.0.0 <-------------------------- Class A IP Address

EDTECH 552, lab 7

Yosemite(config-router)#no auto-summary <-------------------------- Show correct IP classes Yosemite(config-router)#^Z

Seville (config)#router rip Seville (config-router)#version 2 Seville (config-router)#network 10.0.0.0 <-------------------------- Class A IP Address Seville (config-router)#no auto-summary <-------------------------- Show correct IP classes Seville (config-router)#^Z