Internet Control Message Protocol (Icmp) Message Types - Dell PowerEdge M I/O Aggregator Reference Manual

Internet Control Message Protocol (ICMP)
Message Types
This chapter lists and describes the possible internet control message protocol (ICMP) Message Types
resulting from a ping. The first three columns list the possible symbol or type/code. For example, you
would receive a ! or 03 as an echo reply from your ping.
Table 26-1. ICMP Messages and Their Definitions
Symbol Type Code
•
! 0 3
U 3
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
C 4 0
5
0
1
2
3
8 0
Description
Timeout (no reply)
echo reply
destination unreachable:
network unreachable
host unreachable
protocol unreachable
port unreachable
fragmentation needed but don't fragment bit set
source route failed
destination network unknown
destination host unknown
source host isolated (obsolete)
destination network administratively prohibited
destination host administratively prohibited
network unreachable for TOS
host unreachable for TOS
communication administratively prohibited by
filtering
host precedence violation
precedence cutoff in effect
source quench
redirect
redirect for network
redirect for host
redirect for type-of-service and network
redirect for type-of-service and host
echo request

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Query Error
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