CTC Union VDTU2-R240W, Руководство пользователя

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3 3 . . 1 1 0 0 . . 3 3 P P i i n n g g
Ping test determines whether your router can communicate with another computer or other web sites over the
network. Then, if network communication is established, ping tests also determine the connection latency (technical
term for delay) between the two device. You can use a ping test to troubleshoot connectivity problems with your
home network. Ping tests are also commonly used to measure the delay ("lag") with some Internet servers.
To execute a ping test, you simply identify the Web site or other remote server / computer by its IP address. The result
of a ping test includes confirmation that connection was successful, along with a series of numbers that represent the
communication delay in milliseconds (ms).
Ping reports the percentage of packets acknowledged by the remote host. Typically this number will be 100% (as in the
example above) or 0%. When an Internet host pings at 0%, this does not necessarily mean the server is "down" or
unavailable. Internet Web servers especially may be configured to disregard ping requests for security purposes.
The results of a ping test vary depending on the quality of the Internet / network connection. A good broadband
Internet connection typically results in ping test latency of less than 100 ms, often less than 30ms. A satellite Internet
connection normally suffers from latency above 500ms.
On intranets and other private LANs, ping can be an especially useful network diagnostic tool. One scenario that will
result in a ping response rate of other than 0% or 100% occurs when a host is shutdown and leaves the network (or
boots and joins the network).
It is also possible for ping packets to be lost in transit, causing ping to report a host as unavailable when in fact it is
available but unreachable. One cause of lost or dropped packets is extreme levels of traffic. In general, ping utilities will
be unusable on heavily-loaded networks.
IP Address : Which IP address you want to ping
Size : Size of byte packets to the destination, default is 56
Count : Ping count number, default is 3
Update : Updated time, default is 2