IP Addressing Lab Scenarios

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Date of Issue: 08-01-2000
IP Addressing Lab Scenarios
by Howard Berkowitz
Objective 1
Sample Configuration
Router allspice
Router bay
Router chives
Practice with commands
Objective 2
Sample Configuration
Router allspice
Router bay
Router chives
Questions
Objective 1
Implement up the addressing plan shown in Figure 1. Compare your configuration with the suggested configuration.
Figure 1
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Sample Configuration
Router allspice
no ip subnet-zero
hostname allspice
!
int e0
description shared Ethernet
ip address 172.16.1.4 255.255.255.0
ip directed-broadcast

int s0
description serial link to bay
ip address 192.168.255.5 255.255.255.252
int s1
description serial link to chives
ip address 192.168.255.13 255.255.255.252
router rip
network 172.16.0.0
network 192.168.255.0
ip host bay 172.16.1.1
ip host chives 172.16.1.3
no ip domain-lookup
no service config
Router bay
no ip subnet-zero
hostname bay
!
int e0
description shared Ethernet
ip address 172.16.1.1 255.255.255.0
ip directed-broadcast
int s0
description serial link to allspice
ip address 192.168.255.6 255.255.255.252
int s1
description serial link to chives
ip address 192.168.255.9 255.255.255.252
router rip
network 172.16.0.0
network 192.168.255.0

ip host allspice 172.16.1.4
ip host chives 172.16.1.3
no ip domain-lookup
no service config
Router chives
no ip subnet-zero
hostname chives
!
int e0
description shared Ethernet
ip address 172.16.1.3 255.255.255.0
ip directed-broadcast
int s0
description serial link to chives
ip address 192.168.255.14 255.255.255.252
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int s1
description serial link to bay
ip address 192.168.255.10 255.255.255.252
router rip
network 172.16.0.0
network 192.168.255.0
ip host allspice 172.16.1.4
ip host bay 172.16.1.1
no ip domain-lookup
no service config
Practice with commands
Fill in the following table:
What are the MAC and IP addresses that allspice will use to ping the serial 1 interface on chives?

Do a show interface on an Ethernet interface and note the counter values. What happens if you ping to the
broadcast address?
Objective 2
You are told that the Ethernet in the previous example must provide address space for at least 500 hosts. A second
Ethernet, shown in Figure 2, will interconnect Bay and Chives, and must have address space for no more than 126
hosts. Develop a configuration that shows appropriate subnetting.
Write a configuration that reflects efficient subnetting for the two Ethernets. Serial line interfaces do not change.
Provide correct ip host statements.
Description
Subnet address Broadcast address
Allspice-Bay
Allspice-Chives
Bay-Chives
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Figure 2
Sample Configuration
Router allspice
no ip subnet-zero
hostname allspice
!
int e0
description shared Ethernet
ip address 172.16.2.33 255.255.254.0
ip directed-broadcast
int s0
description serial link to bay
ip address 192.168.255.5 255.255.255.252
int s1
description serial link to chives

ip address 192.168.255.13 255.255.255.252
router rip
network 172.16.0.0
network 192.168.255.0
no ip domain-lookup
no service config
Router bay
no ip subnet-zero
hostname bay
!
int e0
description shared Ethernet
ip address 172.16.3.34 255.255.254.0
ip directed-broadcast
int e1
description backup Ethernet
ip address 172.17.1.129 255.255.255.128
int s0
description serial link to allspice
ip address 192.168.255.6 255.255.255.252
int s1
description serial link to chives
ip address 192.168.255.9 255.255.255.252
router rip
network 172.16.0.0
network 172.17.0.0
network 192.168.255.0
no ip domain-lookup
no service config
Router chives

no ip subnet-zero
hostname chives
!
int e0
description shared Ethernet
ip address 172.16.2.35 255.255.254.0
ip directed-broadcast
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int e1
description backup Ethernet
ip address 172.17.1.130 255.255.255.128
int s0
description serial link to chives
ip address 192.168.255.14 255.255.255.252
int s1
description serial link to bay
ip address 192.168.255.10 255.255.255.252
router rip
network 172.16.0.0
network 172.17.0.0
network 192.168.255.0
no ip domain-lookup
no service config
Questions
Did you avoid subnet zero? Remember, CCNA looks for classful addressing.
Why are there only two network statements on allspice?
[NA-IPAd-LS2-F03]
[2000-07-31-01]
Copyright © 2000 Genium Publishing Corporation