HPE FlexFabric 5950 Series Command Reference

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Syntax
ip ttl-expires enable
undo ip ttl-expires enable
Default
Sending ICMP time exceeded messages is disabled.
Views
System view
Predefined user roles
network-admin
Usage guidelines
A device sends ICMP time exceeded messages by following these rules:
• The device sends an ICMP TTL exceeded in transit message to the source when the following
conditions are met:
{ The received packet is not destined for the device.
{ The TTL field of the packet is 1.
• When the device receives the first fragment of an IP datagram destined for the device itself, it
starts a timer. If the timer expires before all the fragments of the datagram are received, the
device sends an ICMP fragment reassembly time exceeded message to the source.
A device disabled from sending ICMP time exceeded messages does not send ICMP TTL exceeded
in transit messages but can still send ICMP fragment reassembly time exceeded messages.
Examples
# Enable sending ICMP time exceeded messages.
<Sysname> system-view
[Sysname] ip ttl-expires enable
ip unreachables enable
Use ip unreachables enable to enable sending ICMP destination unreachable messages.
Use undo ip unreachables enable to disable sending ICMP destination unreachable messages.
Syntax
ip unreachables enable
undo ip unreachables enable
Default
Sending ICMP destination unreachable messages is disabled.
Views
System view
Predefined user roles
network-admin
Usage guidelines
A device sends ICMP destination unreachable messages by following these rules:
• The device sends the source an ICMP network unreachable message when the following
conditions are met:

HPE FlexFabric 5950 Series Specifications

General

Brand	HPE
Model	FlexFabric 5950 Series
Category	Switch
Language	English