Using Ping; Understanding How Ping Works - Cisco WS-C2948G-GE-TX Configuration Manual

Chapter 20 Checking Status and Connectivity
telnet
* telnet
Console> (enable) disconnect console
Console session disconnected.
Console> (enable) disconnect tim-nt.bigcorp.com
Telnet session from tim-nt.bigcorp.com disconnected. (1)
Console> (enable) show users
Session
-------- ---------------- -------------------------
telnet
* telnet
Console> (enable)

Using Ping

The next two sections describe how to use IP ping.

Understanding How Ping Works

You can use IP ping to test connectivity to remote hosts. To ping a host in a different IP subnetwork, you
must define a static route to the network or configure a router to route between those subnets.
The ping command is configurable from normal EXEC mode and privileged EXEC mode. In normal
EXEC mode, the ping command supports the -s parameter, which allows you to specify the packet size
and packet count. In privileged EXEC mode, the ping command allows you to specify the packet size,
packet count, and the wait time.
Table 20-1
Table 20-1 Ping Default Values
Number of
Packets
Packet Size
Wait Time
Source
Address
Ping will return one of the following responses:
•
•
•
•
•
To stop a ping in progress, press Ctrl-C.
Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide—Release 8.2GLX
78-15908-01
tim
suzy
User
jake
suzy
lists the default values that apply to the ping-s command.
Ping
5
56
2
Host IP
Address
Normal response—The normal response (hostname is alive) occurs in 1 to 10 seconds, depending
on network traffic.
Destination does not respond—If the host does not respond, a no answer message is returned.
Unknown host—If the host does not exist, an unknown host message is returned.
Destination unreachable—If the default gateway cannot reach the specified network, a destination
unreachable message is returned.
Network or host unreachable—If there is no entry in the route table for the host or network, a
network or host unreachable message is returned.
tim-nt.bigcorp.com
suzy-pc.bigcorp.com
Location
jake-mac.bigcorp.com
suzy-pc.bigcorp.com
Ping-s
0=continuous
ping
56
2
–
Using Ping
20-9