4000 Router Series Layer 3 - IP Services Command Reference

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• reset ip fast-forwarding cache

ip fast-forwarding

Use ip fast-forwarding to enable fast forwarding.

Use undo ip fast-forwarding to disable fast forwarding.

Syntax

ip fast-forwarding

undo ip fast-forwarding

Default

Fast forwarding is enabled.

Views

System view

Predefined user roles

network-admin

Usage guidelines

Fast forwarding creates an entry for a data flow after the first packet of the flow is forwarded through the

routing table, and uses the entry to forward subsequent packets of the flow. It reduces route lookup time

and improves forwarding efficiency.

When fast forwarding is enabled, the debugging ip packet command does not take effect, and no IP

packet debugging information is output.

Examples

# Enable fast forwarding.

<Sysname> system-Views

[Sysname] ip fast-forwarding

Related commands

• display ip fast-forwarding cache

• display ip fast-forwarding fragcache

• reset ip fast-forwarding cache

ip fast-forwarding aging-time

Use ip fast-forwarding aging-time to configure the aging time of fast forwarding entries.

Use undo ip fast-forwarding aging-time to restore the default.

Syntax

ip fast-forwarding aging-time aging-time

undo ip fast-forwarding aging-time

Default

The aging time of fast forwarding entries is 30 seconds.