Introduction to Routing and Packet Forwarding - Routing Protocols and Concepts - page 42

Repeat the ping command from R1 to PC1.

Step 2.

R1# ping 192.168.1.10

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.10, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 72/83/93 ms

R1#

All the pings are successful this time because the router has an entry for the destination IP
address in the ARP table.

Send an extended ping from R1 to PC1. Step 3.

To accomplish this, type ping at the privileged EXEC prompt and press Enter . Fill out the
rest of the prompts as shown:

R1# ping
Protocol [ip]:
Target IP address: 192.168.1.10
Repeat count [5]: 10
Datagram size [100]:
Timeout in seconds [2]:
Extended commands [n]:
Sweep range of sizes [n]:
Type escape sequence to abort.
Sending 10, 100-byte ICMP Echos to 192.168.1.10, timeout is 2 seconds:
!!!!!!!!!!
Success rate is 100 percent (10/10), round-trip min/avg/max = 53/77/94 ms

R1#

Send a ping from PC1 to R1. Step 4.

In Windows, choose Start > Programs > Accessories > Command Prompt . In the
Command Prompt window that opens, ping R1 by issuing the following command:

C:\> ping 192.168.1.1

The ping should respond with successful results.

Send an extended ping from PC1 to R1.

Step 5.

To accomplish this, enter the following command at the Windows command prompt:

C:\> ping 192.168.1.1 -n 10

There should be ten successful responses from the command.

Task 11: Use the traceroute Command

The traceroute command is an excellent utility for troubleshooting the path that a packet takes
through an internetwork of routers. It can help to isolate problem links and routers along the way. The
traceroute command uses ICMP packets and the error message generated by routers when the packet