Chapter 13 - Configuring IGRP
Cisco & IP Addressing
Louis D. Rossi, Louis R. Rossi and Thomas Rossi
Copyright © 1999 The McGraw-Hill Companies, Inc.
Answers
13.1:
Router_A# config t
Enter configuration commands, one per line. End with CNTL/Z.
Router_A(config)#int e0
Router_A(config-if)#ip address 10.10.1.1 255.255.255.0
Router_A(config-if)#int s0
Router_A(config-if)#ip address 10.10.8.9 255.255.255.0
Router_A(config-if)#router igrp 100
Router_A(config-router)#network 10.0.0.0
Router_A(config-router)#
Router_A#
%SYS-5-CONFIG_I: Configured from console by console
Router_A#
13.2:
Router_B# config t
Enter configuration commands, one per line. End with CNTL/Z.
Router_B(config)#int s0
Router_B(config-if)#ip address 10.10.8.1 255.255.255.0
Router_B(config-if)#int s1
Router_B(config-if)#ip address 10.10.12.1 255.255.255.0
Router_B(config-if)#int s2
Router_B(config-if)#ip address 10.10.4.1 255.255.255.0
Router_B(config-if)#router igrp 100
Router_B(config-router)#network 10.0.0.0
Router_B(config-router)#
Router_B#
%SYS-5-CONFIG_I: Configured from console by console
Router_B#
13.3:
Router_C# config t
Enter configuration commands, one per line. End with CNTL/Z.
Router_C(config)#int s0
Router_C(config-if)#ip address 10.10.12.9 255.255.255.0
Router_C(config-if)#int e0
Router_C(config-if)#ip address 10.10.2.1 255.255.255.0
Router_C(config-if)#router igrp 100
Router_C(config-router)#network 10.0.0.0
Router_C(config-router)#
Router_C#
%SYS-5-CONFIG_I: Configured from console by console
Router_C#
13.4:
“show ip protocol”
13.5:
“show run”; “show ip interface” and “show interface” will also provide information relating the IP addresses.
Router#sh ip interface
%SYS-5-CONFIG_I: Configured from console by consolet e0
Ethernet0 is administratively down, line protocol is down
Internet address is 10.10.1.1/24
Broadcast address is 255.255.255.255
Address determined by setup command
MTU is 1500 bytes
Helper address is not set
Directed broadcast forwarding is enabled
Multicast reserved groups joined: 224.0.0.9
Outgoing access list is not set
Inbound access list is not set
Proxy ARP is enabled
Security level is default
Split horizon is enabled
ICMP redirects are always sent
ICMP unreachables are always sent
ICMP mask replies are never sent
IP fast switching is enabled
IP fast switching on the same interface is disabled
IP multicast fast switching is enabled
Router Discovery is disabled
IP output packet accounting is disabled
IP access violation accounting is disabled
TCP/IP header compression is disabled
Probe proxy name replies are disabled
Gateway Discovery is disabled
Policy routing is disabled
Network address translation is disabled
Router#
Router#sh int e0
Ethernet0 is administratively down, line protocol is down
Hardware is Lance, address is 0060.09c3.df60 (bia 0060.09c3.df60)
Internet address is 10.10.1.1/24
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 255/255, load 1/255
Encapsulation ARPA, loopback not set, keepalive set (10 sec)
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 2d02h, output hang never
Last clearing of “show interface” counters never
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
0 input packets with dribble condition detected
81 packets output, 13498 bytes, 0 underruns
13.6:
“show ip route”
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