enable icmp time-exceeded

enable icmp time-exceeded {vlan name}


Enables the generation of ICMP (Internet Control Message Protocol) time exceeded messages on one or all VLAN (Virtual LAN)s.

Syntax Description

name Specifies a VLAN name.



Usage Guidelines

Enables the generation of an ICMP time exceeded message (type 11) when the TTL field expires during forwarding. IP multicast packets do not trigger ICMP time exceeded messages. If a VLAN is not specified, the command applies to all IP interfaces.

This command only affects the generation of certain ICMP packets. Filtering of ICMP packets usually forwarded by the switch is controlled by the access-list commands.


The following example enables the generation of ICMP time exceeded messages on VLAN "accounting":

enable icmp time-exceeded vlan accounting


This command was first available in ExtremeXOS 10.1.

Platform Availability

This command is available on the Summit X450-G2, X460-G2, X670-G2, X770, and ExtremeSwitching X440-G2, X620, X690, X870 series switches.