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Alcatel-Lucent 6850-48 Reference Guide

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IP Commands
OmniSwitch CLI Reference Guide
September 2009
page 32-75
• While this command can be used to enable or disable all ICMP messages, some of the more common 
ICMP messages have their own CLI commands, as described in the pages below. The following ICMP 
message have specific commands to enable and disable:
• Enabling Host unreachable and Network unreachable messages is not recommended. Enabling these 
messages can cause switch instability due to high-CPU conditions, depending upon the volume of traf-
fic required by these messages.
Examples
-> icmp type 4 code 0 enabled
-> icmp type 4 code 0 min-pkt-gap 40
-> icmp type 4 code 0 disable
Release History
Release 6.1; command was introduced.
Related Commands
MIB Objects
alaIcmpCtrlTable
alaIcmpCtrlType
alaIcmpCtrlTable
alaIcmpCtrlCode
alaIcmpCtrlStatus
alaIcmpCtrlPktGap
ICMP Message
Command 
Network unreachable (type 0, code 3)
Host unreachable (type 3, code 1)
Protocol unreachable (type 3, code 2)
Port unreachable (type 3, code 3)
Echo reply (type 0, code 0)
Echo request (type 8, code 0)
Timestamp request (type 13, code 0)
Timestamp reply (type 14, code 0)
Address Mask request (type 17, code 0)
Address Mask reply (type 18, code 0)
Enables or disables all ICMP messages.
Allows the viewing of the ICMP control settings.