Appendix C: ICMP Packet Types & Codes
This appendix lists the various ICMP Packet Types and Codes as used in “Using IP Simulate” on page 273.
Note:
Some ICMP Packet Types have no corresponding Code.
ICMP Packet Type/Code List
Table 120: ICMP Packet Types/Codes
Description | ICMP Type | ICMP Code |
|
|
|
Echo Reply | 0 | 0 |
|
|
|
Unreachable | 3 | |
|
|
|
Network Unreachable | 3 | |
|
|
|
Host Unreachable | 3 | 1 |
|
|
|
Protocol Unreachable | 3 | 2 |
|
|
|
Port Unreachable | 3 | 3 |
|
|
|
Fragmentation Needed but DF Bit Set | 3 | 4 |
|
|
|
Source Route Failed | 3 | 5 |
|
|
|
Destination Network Unknown | 3 | 6 |
|
|
|
Destination Host Unknown | 3 | 7 |
|
|
|
Destination Network Administratively Prohibited | 3 | 9 |
|
|
|
Network Unreachable for TOS | 3 | 11 |
|
|
|
Host Unreachable for TOS | 3 | 12 |
|
|
|
Communication Administratively Prohibited by Filtering | 3 | 13 |
|
|
|
Host Precedence Violation | 3 | 14 |
|
|
|
Precedence Cutoff in Effect | 3 | 15 |
|
|
|
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