IP Commands
page 29-62 OmniSwitch 6250 CLI Reference Guide November 2009
icmp unreachable
Enables or disables ICMP messages pertaining to unreachable destinations, and sets the minimum packet
gap. The minimum packet gap is the number of microseconds that must pass between ICMP messages of
the same type.
icmp unreachable [net-unreachable | host-unreachable | protocol-unreachable |
port-unreachable] {{enable | disable} | min-pkt-gap gap}
Syntax Definitions
net-unreachable Sets the unreachable network ICMP message.
host-unreachable Sets the unreachable host ICMP message.
protocol-unreachable Sets the unreachable protocol ICMP message.
port-unreachable Sets the unreachable port ICMP message.
enable Enables the specified ICMP message.
disable Disables the specified ICMP message.
gap The number of microseconds required between ICMP messages of this
type.
Defaults
Platforms Supported
OmniSwitch 6250
Usage Guidelines
• This command enables ICMP messages relating to unreachable destinations. Unreachable networks,
hosts, protocols, and ports can all be specified.
• Enabling host-unreachable and net-unreachable messages are not recommended as it can cause the
switch instability due to high-CPU conditions depending upon the volume of traffic required by these
messages.
• The unreachable ICMP messages can also be enabled, disabled, and modified using the icmp type
command. See the icmp type command information on the type and code for the unreachable ICMP
messages.
Examples
-> icmp unreachable net-unreachable enable
-> icmp unreachable host-unreachable enable
parameter default
enable | disable disabled
gap 0
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