Configuring IP Managing IP
OmniSwitch 6800/6850/9000 Network Configuration Guide March 2008 page 18-29
Activating ICMP Control Messages
ICMP messages are identified by a type and a code. This number pair specifies an ICMP message. By
default, ICMP messages are disabled. For example, ICMP type 4, code 0, specifies the source quench
ICMP message.
To enable or disable an ICMP message, use the icmp type command with the type and code. For exam-
ple, to enable the source quench the ICMP message (type 4, code 0) enter the following:
-> icmp type 4 code 0 enable
The following table is provide to identify the various ICMP messages, and their type and code:
ICMP Message Type Code
echo reply 0 0
network unreachable 0 3
host unreachable 3 1
protocol unreachable 3 2
port unreachable 3 3
frag needed but DF bit set 3 4
source route failed 3 5
destination network unknown 3 6
destination host unknown 3 7
source host isolated 3 8
dest network admin prohibited 3 9
host admin prohibited by filter 3 10
network unreachable for TOS 3 11
host unreachable for TOS 3 12
source quench 4 0
redirect for network 5 0
redirect for host 5 1
redirect for TOS and network 5 2
redirect for TOS and host 5 3
echo request 8 0
router advertisement 9 0
router solicitation 10 0
time exceeded during transmit 11 0
time exceeded during reassembly 11 1
ip header bad 12 0
required option missing 12 1
timestamp request 13 0
timestamp reply 14 0
information request (obsolete) 15 0
information reply (obsolete) 16 0
address mask request 17 0
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