Testing and Troubleshooting A LAN - jude-lindale/Wiki GitHub Wiki

ping: Command used to test that a device on the network is reachable
Usage ping[-t][-a][-n count)[-1 size][-f -i TTL][-v TOS] [-r count][-s

count]

[[-j host-list]:[-k host-list][-w timeout] destination-list

Options

-t Ping the specified host until stopped

To see statistics and continue, type Control-Break

To stop, type Control-C

-a Resolve addresses to host-names

-n count Number of echo requests to send

-1 size Send buffer size

-f Set Don’t Fragment flag in packet

-I

TTL Time To Live v

TOS Type Of Service

r count Record route for count hops

s count Timestamp for count hops

j host-list Loose source route along host-list

k host-list Strict source route along host-list

w timeout in milliseconds to wait for each reply

The following is an example of pinging another computer on the network to verify that the computers are communicating. In this example, computer 1 is used to ping computer 2. Remember that the ping command is executed from the command window:

ping 10.10.10.2

Pinging 10.10.10.2 with 32 bytes of data:

Reply from 10.10.10.2: bytes 32 time<1ms TTL 128

Ping statistics for 10.10.10.2:

The text shows that 32 bytes of data is being sent to the computer with the IP address 10.10.10.2. “Reply from 10.10.10.2” indicates that computer 2 received the message. If the computer at IP address 10.10.10.2 did not respond, the message “Request timed out.” is displayed:

_ping 10.10.10.2

Pinging 10.10.10.2 with 32 bytes of data:

Request timed out.

Ping statistics for 10.10.10.2:

Packets: Sent = 4, Received = 0, Lost= 4

(100% loss),_ Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

Minimum = 0ms, Maximum = 0ms, Average = 0ms