282 Cisco LAN Switching Configuration Handbook
Table B-2 shows the assigned ICMP type numbers, ICMP codes (where applicable), a
brief description, and a reference to an RFC.
Table B-2 Assigned ICMP Type Numbers, Codes, Descriptions, and Associated RFCs
Type Code Name Reference
0 Echo Reply RFC 792
1 Unassigned
2 Unassigned
3 Destination Unreachable RFC 792
0 Net 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 Is Administratively Prohibited
10 Destination Host Is Administratively Prohibited
11 Destination Network Unreachable for Type of Service
12 Destination Host Unreachable for Type of Service
13 Communication Administratively Prohibited RFC 1812
14 Host Precedence Violation RFC 1812
15 Precedence Cutoff in Effect RFC 1812
4 Source Quench RFC 792
5 Redirect RFC 792
0 Redirect Datagram for the Network (or Subnet)
1 Redirect Datagram for the Host
2 Redirect Datagram for the Type of Service and Network
3 Redirect Datagram for the Type of Service and Host
6 Alternate Host Address
To Next Page
Loading...
