Review Questions
Use router output taken from R1 from the previous Practical Exercise to answer the following questions. Example 3-66 shows this sample output taken from R1 and includes the IP routing table and sample pings to area 1.
Example 3-66 R1's IP Routing Table and Ping Requests to Area 1
R1>show ip route |
Gateway of last resort is not set |
141.108.0.0/16 is variably subnetted, 8 subnets, 3 masks |
O 141.108.1.128/25 [110/65] via 141.108.10.10, 00:15:28, Serial0/0 |
O 141.108.9.128/25 [110/129] via 141.108.10.10, 00:15:28, Serial0/0 |
O 141.108.1.0/25 [110/65] via 141.108.10.10, 00:15:28, Serial0/0 |
C 141.108.10.8/30 is directly connected, Serial0/0 |
O 141.108.9.0/25 [110/129] via 141.108.10.10, 00:15:28, Serial0/0 |
O IA 141.108.10.0/30 [110/192] via 141.108.10.10, 00:15:28, Serial0/0 |
O 141.108.12.0/24 [110/129] via 141.108.10.10, 00:15:28, Serial0/0 |
O 141.108.10.4/30 [110/128] via 141.108.10.10, 00:15:29, Serial0/0 |
131.108.0.0/16 is variably subnetted, 9 subnets, 4 masks |
C 131.108.4.128/25 is directly connected, Loopback1 |
O 131.108.5.32/27 [110/1010] via 131.108.1.2, 00:16:04, Ethernet0/0 |
O 131.108.33.0/24 [110/74] via 141.108.10.10, 00:15:29, Serial0/0 |
O 131.108.6.1/32 [110/11] via 131.108.1.2, 00:16:04, Ethernet0/0 |
C 131.108.5.0/27 is directly connected, Loopback2 |
O 131.108.6.2/32 [110/11] via 131.108.1.2, 00:16:06, Ethernet0/0 |
C 131.108.4.0/25 is directly connected, Loopback0 |
C 131.108.1.0/24 is directly connected, Ethernet0/0 |
O 131.108.26.0/24 [110/138] via 141.108.10.10, 00:15:31, Serial0/0 |
R1#ping 131.108.4.1 |
Type escape sequence to abort. |
Sending 5, 100-byte ICMP Echos to 131.108.4.1, timeout is 2 seconds: |
!!!!! |
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms |
R1#ping 131.108.4.129 |
Type escape sequence to abort. |
Sending 5, 100-byte ICMP Echos to 131.108.4.129, timeout is 2 seconds: |
!!!!! |
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms |
R1#ping 131.108.5.1 |
Type escape sequence to abort. |
Sending 5, 100-byte ICMP Echos to 131.108.5.1, timeout is 2 seconds: |
!!!!! |
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms |
R1#ping 131.108.5.33 |
Type escape sequence to abort. |
Sending 5, 100-byte ICMP Echos to 131.108.5.33, timeout is 2 seconds: |
!!!!! |
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms |
R1#ping 131.108.6.1 |
Type escape sequence to abort. |
Sending 5, 100-byte ICMP Echos to 131.108.6.1, timeout is 2 seconds: |
!!!!! |
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms |
R1#ping 131.108.6.2 |
Type escape sequence to abort. |
Sending 5, 100-byte ICMP Echos to 131.108.6.2, timeout is 2 seconds: |
!!!!! |
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms |
R1# |
View Example 3-66 to answer the following review questions.
The answers to these question can be found in Appendix C, "Answers to Review Questions."
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Which information is stored in an IP routing table as seen by R1?
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Which command do you use to view only OSPF routes?
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How many subnets are known by R1 using the Class B networks 131.108.0.0/16 and 141.108.0.0/16?
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What path is taken to the remote network 141.108.100.1/24?
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Why is the remote network 141.108.6.0/32 displayed as learned through the denotation: O IA?
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What is the cost associated with the remote network 131.108.33.0/24 [110/74]?