ICMP message types
The type field identifies the type of message sent by the host or gateway.
|
Type |
ICMP messages |
|
0 |
Echo Reply (Ping Reply, used with Type 8, Ping Request) |
|
3 |
Destination Unreachable |
|
4 |
Source Quench |
|
5 |
Redirect |
|
8 |
Echo Request (Ping Request, used with Type 0, Ping Reply) |
|
9 |
Router Advertisement (Used with Type 9) |
|
10 |
Router Solicitation (Used with Type 10) |
|
11 |
Time Exceeded |
|
12 |
Parameter Problem |
|
13 |
Timestamp Request (Used with Type 14) |
|
14 |
Timestamp Reply (Used with Type 13) |
|
15 |
Information Request (obsolete) (Used with Type 16) |
|
16 |
Information Reply (obsolete) (Used with Type 15) |
|
17 |
Address Mask Request (Used with Type 17) |
|
18 |
Address Mask Reply (Used with Type 18) |
