ip redirects enable

Use ip redirects enable to enable sending ICMP redirect messages.

Use undo ip redirects enable to disable sending ICMP redirect messages.

Syntax

ip redirects enable

undo ip redirects enable

Default

Sending ICMP redirect messages is disabled.

Views

System view

Predefined user roles

network-admin

Usage guidelines

ICMP redirect messages simplify host management and enable hosts to gradually optimize its routing table.

A host that has only one route destined to the default gateway sends all packets to the default gateway. The default gateway sends an ICMP redirect message to inform the host of a correct next hop by following these rules:

• The receiving and sending interfaces are the same.

• The selected route is not created or modified by any ICMP redirect message.

• The selected route is not destined for 0.0.0.0.

• There is no source route option in the received packet.

Examples

# Enable sending ICMP redirect messages.

<Sysname> system-view
[Sysname] ip redirects enable