ICMP Address Mask Reply
The Internet Control Message Protocol (ICMP) is one of the core protocols of the Internet Protocol Suite. It is chiefly used by the operating systems of networked computers to send error messages indicating, for example, that a requested service is not available or that a host or router could not be reached. ICMP can also be used to relay query messages. It is assigned protocol number 1.
ICMP differs from transport protocols such as TCP and UDP in that it is not typically used to exchange data between systems, nor is it regularly employed by end-user network applications (with the exception of some diagnostic tools like ping and traceroute).
ICMP for Internet Protocol version 4 (IPv4) is also known as ICMPv4. IPv6 has a similar protocol, ICMPv6.
|Routing protocols *|
|* Not a layer. A routing protocol belongs either to application or network layer.|
Other articles related to "icmp address mask reply, icmp, address, reply":
... as a result of a TCP, UDP or another ICMP transmission ... if the original datagram has a multicast destination address ... included to allow the client to match the reply with the request that caused the destination unreachable reply ...
Famous quotes containing the words reply, mask and/or address:
“The prince in disguise makes the most charming beggar in the world, no doubt; but that is becauseas all fairy-tales from the beginning of time have taught usthe prince wears his rags as if they were purple. And, to do that, he not only must once have worn purple, but must never forget the purple that he has worn. And to the argument that all cannot wear purple, I can ... only reply that that seems to me to be no reason why all should wear rags.”
—Katharine Fullerton Gerould (18791944)
“We never really are the adults we pretend to be. We wear the mask and perhaps the clothes and posture of grown-ups, but inside our skin we are never as wise or as sure or as strong as we want to convince ourselves and others we are. We may fool all the rest of the people all of the time, but we never fool our parents. They can see behind the mask of adulthood. To her mommy and daddy, the empress never has on any clothesand knows it.”
—Frank Pittman (20th century)
“Another success is the post-office, with its educating energy augmented by cheapness and guarded by a certain religious sentiment in mankind; so that the power of a wafer or a drop of wax or gluten to guard a letter, as it flies over sea over land and comes to its address as if a battalion of artillery brought it, I look upon as a fine meter of civilization.”
—Ralph Waldo Emerson (18031882)