ICMP Address Mask Request
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.
| Internet protocols |
|---|
| Application layer |
|
| Transport layer |
|
| Routing protocols * |
|
| Internet layer |
|
| Link layer |
|
| * Not a layer. A routing protocol belongs either to application or network layer. |
Read more about ICMP Address Mask Request: Technical Details, Control Messages
Famous quotes containing the words address, mask and/or request:
“It wasn’t by accident that the Gettysburg address was so short. The laws of prose writing are as immutable as those of flight, of mathematics, of physics.”
—Ernest Hemingway (1899–1961)
““... To say of one mask it is like,
To say of another it is like,
To know that the balance does not quite rest,
That the mask is strange, however like.””
—Wallace Stevens (1879–1955)
“Mr. Roosevelt, this is my principal request—it is almost the last request I shall ever make of anybody. Before you leave the presidential chair, recommend Congress to submit to the Legislatures a Constitutional Amendment which will enfranchise women, and thus take your place in history with Lincoln, the great emancipator. I beg of you not to close your term of office without doing this.”
—Susan B. Anthony (1820–1906)