Cisco 2511 - Router - EN User Manual download pdf (Page 21)

7. Testing Connectivity

ping and traceroute are tools commonly used to test network layer

connectivity. You can also examine the device’s routing table to obtain

further information on network layer functionality.

Testing accessibility – ping

The ping (packet internet groper) command demonstrates network layer

connectivity and gives you an idea of the reliability of the path to the

specified system. ping does this by providing information as to the

minimum, average, and maximum times it takes for ping packets to find the

specified system and return.

There are two forms of ping. The simplest form is available through the

User EXEC mode of the CLI. It takes the IP address of the interface of the

device you want to contact as its only argument, for example:

r1# ping 172.23.17.53

There is also an advanced feature of ping call the extended ping which is

available from the Privileged EXEC mode of the CLI. It provides more

testing for the link. You can access this advanced form of ping by simply

entering ping at the router prompt. But for now, use the simple form to ping

addresses.

EXERCISE 8: Pinging an IP Address______________________________

ping the IP address of one of your directly connected devices.

While connected to Router r3 ping Router r1.

Pinging Command

1 2 ... 16 17 18 19 20 21 22 23 24

No comments

Cisco 2511 - Router - EN User Manual Page 21