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) |