[-s count] [-j computer-list] │ [-k computer-list] [-w timeout] destination list
Options:
-t Ping the specified host until it stops. To view statistics and continue, type Control-Break；; Stop-type control-c.
Keep ping the local host until you press control-c.
This function has no special skills, but it can be used with other parameters, which will be mentioned below.
-a resolves the address to a host name.
Resolve the NetBios name of the computer.
For example: c: \ ping-a192.168.1.21.
Ping iceblood.yofor.com with 32 bytes of data [192.168.1.21]:
Reply from192.168.1.21:bytes = 32 timeping-n 50 202.103.96.68.
Ping 202 with 32 bytes of data.103.96.68:
202. 103.96.68 reply: byte =32 time =50ms TTL=24 1
202. 103.96.68 reply: byte =32 time =50ms TTL=24 1
202. 103.96.68 reply: byte =32 time =50ms TTL=24 1
The request timed out.
………………
202. 103.96.68 reply: byte =32 time =50ms TTL=24 1
202. 103.96.68 reply: byte =32 time =50ms TTL=24 1
202. Ping statistics of103.96.68:
Packet: send = 50, receive = 48, lose = 2 (4% lost), approximate round-trip time in milliseconds:
Minimum value = 40ms, maximum value = 5 1 ms, and average value = 46ms.
As can be seen from the above, in the process of sending 50 packets to 202. 103.96.68, 48 packets were returned, and two of them were lost for unknown reasons.
Among these 48 packets, the fastest return speed is 40ms, the slowest is 5 1ms, and the average speed is 46 ms.
-l size send buffer size.
Defines the size of the loopback packet.
By default, the packet size sent by windows ping is 32 bytes. We can also define its size by ourselves, but there is a size limit.
That is to say, only 65500byt can be sent at most.
Some people may ask why it is limited to 65500byt, because all Windows series systems have security holes (maybe other systems also have them).
When the data packet sent to the other party at one time is greater than or equal to 65532,
The other party is likely to block the machine, so in order to solve this security vulnerability, Microsoft limited the packet size of ping.
Although Microsoft has made this restriction, the harm is still very strong after this parameter is matched with other parameters. For example, we can achieve it by matching the -t parameter.
Aggressive orders:
(The following description is dangerous and is only used for experiments. Please don't apply it to other people's machines easily, or you will be at your own risk. )
c:\ ping-l 65500-t 192. 168. 1.2 1
Ping192.168.1.21,containing 65,500 bytes of data:
Reply from192.168.1.21:bytes = 65500timesping-n1-r9202.96.105./kloc-.
Ping 202.96.105.101:
Reply from 202.96.105.101:bytes = 32time =10ms TTL = 249.
Route: 202. 107.208. 187-
202. 107.2 10.2 14 -
6 1. 153. 1 12.70 -
6 1. 153. 1 12.89 -
202.96. 105. 149 -
202.96. 105.97 -
202.96. 105. 10 1 -
202.96. 105. 150 -
6 1. 153. 1 12.90
Ping statistics are 202.96.105.101:
Packet: send = 1, receive = 1, loss = 0 (0% loss),
Approximate round-trip time in milliseconds:
Minimum value =10ms, maximum value =10ms, and average value =10ms.
As you can see from the above, from my computer to 202.96. 105.438+0438+0 * *.
Adopted 202.107.208.187,202.107.210.214,61.153.
Count timestamp of -s count hops.
Specifies the timestamp of the hop count specified by count.
This parameter is similar to -r, except that this parameter does not record the routes returned by packets, and only records four at most.
-j host-list is routed along the loose source of host-list.
Routes packets using the computer list specified by computer-list. Continuous computers can be separated by intermediate gateways (routing sparse sources). The maximum number allowed by IP is 9.
-k host-list strict source routing along the host-list.
Routes packets using the computer list specified by computer-list. Continuous computers cannot be separated by intermediate gateways (routing is strictly from sources). The maximum number of IPS allowed is 9.
-w timeout The timeout (in milliseconds) for waiting for each reply.
Specifies the timeout interval in milliseconds.
There is no other trick for this parameter.
Other skills of ping command: In general, you can roughly judge the system type of the target host by pinging the TTL value returned by the other party.
Generally speaking, the TTL value returned by Windows series system is between 100- 130, regardless of whether it is Windows series or UNIX/Linux series.
The TTL value returned by UNIX/Linux system is between 240 and 255. Of course, the TTL value can be modified in another host.
Windows series system can be realized by modifying the following key values in the registry:
[HKEY _ LOCAL _ MACHINE \ SYSTEM \ current control set \ Services \ Tcpip \ Parameters]
" DefaultTTL"=dword:000000ff
255 - FF
128 - 80
64 - 40
32 - 20
Ok, I basically copied the ping command. If you have any questions, please post it.
★PING parameter (reproduced)
Ping parameter
-a converts the machine identification of the target into an ip address.
-t If the user does not interrupt, he will continue to ping.
-c count requires the ping command to send packets continuously until the count request is sent and received.
-d Open the debug status of the socket used.
-f is a shortcut to ping. So that the speed of ping packets is as fast as that of packets returned from remote hosts, or even faster, reaching 100 times per second. In this way,
Each request is represented by a period. Print a space bar for each answer.
-1 sec is a specific number of seconds between packet transmissions. Cannot be used with-f.
-n Use only numbers. Under normal circumstances, ping will try to translate an IP address into a host name. This option requires ping to print the IP address without looking for the symbol name.
This option is very important if the local DNS server cannot be used for some reason.
-p mode supports 16 padding bytes that can be identified by this option and added to the packet. This option is useful when diagnosing data-related errors in the network.
-q causes ping to print some summary information only at the beginning and end.
-R Add the ICMP RECORD-ROUTE option to the ECHO_REQUEST packet, requiring that the route be recorded in the packet, so that ping can print out the route information when the data returns.
Each packet can only record 9 routing nodes. Many hosts ignore or discard this option.
-r causes the ping command to bypass the normal routing table to send packets.
-s packetsize enables the user to determine the number of bytes of data to be sent. The default value is 56 characters, plus 8 bytes of ICMP header and ***64 ICMP data bytes.
-v puts ping in verbose mode. ICMP expects the ping command to print all other returned internet control message protocols except the ECHO-RESPONSE packet.
Replenish again
Ping command-detailed help
Verify the connection to a remote computer or local computer. This command can only be used after the TCP/IP protocol is installed.
Ping [-t] [-a] [-n count] [-l length] [-f] [-i ttl] [-v tos] [-r count] [-s count]
[-j computer list] │ [-k computer list] [-w timeout] destination list
parameter
Equivalent to -ED
Verify the connection to the specified computer until the user disconnects.
[Ancient names or Latin modern names of animals and plants]
Resolve the address to a computer name.
-n count
Send the number of echo messages specified by count. The default value is 4.
-l length
Sends an ECHO message containing the data length specified by length. The default value is 64 bytes and the maximum value is 8 192 bytes.
-f
Send the "Do not segment" flag in the packet. The packet will not be segmented by the gateway on the route.
-I see
Set the time-to-live field to the value specified by ttl.
-v tos
Set the service type field to the value specified by tos.
-r count
Record the route of outgoing and return messages in the Record Route field. The minimum value of the specified count can be 1 and the maximum value can be 9.
-s count
A timestamp that specifies the number of forwards specified by count.
-j computer-list
Routes messages through the computer list specified by computer-list. Intermediate gateways can separate consecutive computers (loose source routing). A maximum of 9 IP addresses are allowed.
-k computers-list
Routes messages through the computer list specified by computer-list. Intermediate gateways can separate successive computers (strict source routing). A maximum of 9 IP addresses are allowed.
-w timeout
Specifies the timeout interval in milliseconds.
Destination list
Specify a remote computer to verify the connection.
More information about Ping
Ping-attention
The Ping command verifies the connection with a remote computer or a local computer by sending an ICMP echo message to the computer and listening for the return of the echo message.
For each message sent, Ping waits at most 1 second, and prints the number of messages sent and received. Compare each message received with the message sent to verify its validity.
By default, four response messages are sent, each containing 64 bytes of data (periodic capital letter sequence).
You can use the Ping utility to test the computer name and IP address. If the IP address can be successfully verified, but the computer name cannot be successfully verified, there is a problem with name resolution.
In this case, make sure it is in the local host file or DNS.
The computer name to be queried exists in the database.
The following shows an example of Ping output: (Windows users can use: start-run, and enter "command" to bring up a command window to use this command).
Ds.internic.net shopping center
Ping ds.interactive.net with 32 bytes of data [192.20.239.132]:
192.20.239. 132 reply: byte =32 time = 10 1ms TTL=243.
192.20.239. 132 reply: byte =32 time = 100ms TTL=243.
192.20.239. 132 reply: byte =32 time = 120ms TTL=243.
192.20.239. 132 reply: byte =32 time = 120ms TTL=243.