| TYPE |
CODE |
MEANING |
| 0 |
0 |
ECHO REPLY (ping reply) |
| 3 |
|
DESTINATION UNREACHABLE |
|
0 |
network unreachable |
|
1 |
host unreachable |
|
2 |
protocol unreachable |
|
3 |
port unreachable |
|
4 |
fragmentation needed and don't
fragment was set |
|
5 |
source route failed |
|
6 |
destination network unknown |
|
7 |
destination host unknown |
|
8 |
source host isolated |
|
9 |
destination network
administratively prohibited |
|
10 |
destination host administratively
prohibited |
|
11 |
network unreachable for TOS |
|
12 |
host unreachable for TOS |
|
13 |
prohibited by filtering |
|
14 |
host precedence violation |
|
15 |
precedence cutoff |
| 4 |
0 |
SOURCE QUENCH |
| 5 |
|
REDIRECT |
|
0 |
network |
|
1 |
host |
|
2 |
network & TOS |
|
3 |
host & TOS |
| 8 |
0 |
ECHO REQUEST (ping request) |
| 9 |
0 |
ROUTER ADVERTISEMENT |
| 10 |
0 |
ROUTER SOLICITATION |
| 11 |
|
TIME EXCEEDED |
|
0 |
TTL=0 during transmit |
|
1 |
TTL=0 during reassembly |
| 12 |
|
PARAMETER PROBLEM |
| 13 |
0 |
TIMESTAMP REQUEST |
| 14 |
0 |
TIMESTAMP REPLY |
| 15 |
0 |
INFO REQUEST |
| 16 |
0 |
INFO REPLY |
| 17 |
0 |
ADDRESS MASK REQUEST |
| 18 |
0 |
ADDRESS MASK REPLY |