Ping how many bytes

Both the computer and the submarine's sonar send out a "ping", in the form of either a series of packets or a brief burst of sound. The ping "bounces" off the target and then returns to let you know the target is there. Ping is both a noun and a verb, e. Ping is built into almost every network-capable operating system. To ping a computer, at the command prompt , enter ping , a space, and then the network or Internet address you wish to contact.

For example, enter the following at a command prompt:. Operating systems format their ping results differently, so the results will not look exactly the same from, for example, a Linux computer. Regardless of the operating system, the results will show the IP address of the computer you're pinging, the round-trip time in milliseconds for each packet, the number of packets sent and received, and the number and percentage of how many packets got lost.

By default, the ping command sends several echo requests, typically four or five. The result of each echo request is displayed, showing whether the request received a successful response, how many bytes were received in response, the Time to Live TTL , and how long the response took to receive, along with statistics about packet loss and round trip times. The ping utility has been incorporated into virtually every operating system with network support.

While echo request and echo reply are ICMP messages, the exact implementation of the Ping utility varies slightly among manufacturers. In its simplest form, the ping utility can be run with nothing more than the ping command and a destination. The remote host can be specified either by name or address. There are numerous switches available for the ping command that allow the default settings to be customized for more specific purposes. Unfortunately, there is no consistency across platforms for the different switches.

For example, Windows uses a -n number to set how many pings to send, while most Unix systems use a -c count. Here are some examples of ping command switches. Generally, using ping -? Number or count — sets the number of echo requests, or pings, to be sent. By default, this number is four on most Windows systems, and five on most Unix systems.

Setting a higher number allows the ping to continue to run either as a way of gathering more data, for example, to see if the reply time varies, or as a way of ensuring that a system continues to be responsive. Timeout — changes the timeout before the utility waits for a reply from the destination. On Windows systems, the default value is 4, milliseconds, or 4 seconds. Size — changes the size of the ping packet.

Until stopped — keeps running the ping until stopped by the user -t in Windows. For such a small, basic utility, the ping command can be a valuable tool in numerous situations. As a command-line based utility, ping lends itself to easy use in various scripts, allowing for numerous pings to run and be recorded for all manner of usage. For example, the output of the ping command can easily be piped to a text file for later review. Perhaps the most common use of the ping utility is in troubleshooting.

When trying to use applications or systems over a network, the most important thing to know is if there is actually a working connection. A series of ping commands can help determine what the problem is. A quick ping by IP address will confirm that the system is on, that there is a connection, and that the two machines can talk to each other.

If the ping is successful by name and IP address, but the response times are long, there may be a routing, network speed, or congestion issue. Even unsuccessful pings can provide valuable troubleshooting information. If a ping by IP address is successful, but a ping by name fails, then there is a name resolution issue. If the ping fails altogether, you can try to ping other parts of the network to isolate the issue. A successful ping of the default gateway confirms that the network connection is functioning, but that something is interfering with a connection to the remote system.

Connect and share knowledge within a single location that is structured and easy to search. If - then How? The maximum size of an IPv4 packet is bytes of which some is protocol overhead so that data must be a couple bytes less than and a ping can't be more than one IP packet, so the answer is no. Yes, there is a way to increase the default size.

Which OS or network device are you referring to? By the way, there really is no practical reason to increase the size unless you're super curious or just plain ol' malicious. From a network operations perspective, the increased overhead will choke performance. This is a bad idea. From a security perspective, and much like John T points out, increasing the packet size for ICMP messages will usually lead to denial of service.

Use PsPing. This is a tool by Mark Russinovich which is able to perform very fast ping. And many more. Windows OS blocks max size at but in Linux you can ping up to the real limit. You can use the -l switch with ping to specify a buffer size, although keep in mind it is limited to a maximum of bytes. I believe the limitation is related to the historical bug, the ping of death.

If you increase the packet size more than , the protocol does not have any idea to handle such kind of packets exceeding upper limit. The system is very likely to crash, an attack well known as the Ping of death. To prevent it most operating systems limits its max ping size. To cross the limit you need to hack your os and it depends on which os you use.