Users Guide

ip unknown-unicast

Enable IPv4 catch-all route.

S4820T

Syntax

ip unknown-unicast [vrf vrf-name]

To remove the IPv4 catch-all route (0.0.0.0/0) from the LPM route forwarding table in hardware which gets

added as a default conguration after the initialization of FIB Agent module, use the no ip unknown-

unicast command.

Defaults None

Parameters

vrf vrf-name (Optional) Enter the keyword vrf followed by the name of the VRF to enable

catch-all routes corresponding to that VRF.

Command Modes CONFIGURATION

Command History

Version Description

9.8(0.0P5) Introduced on the S4048-ON.

9.8(0.0P2) Introduced on the S3048-ON.

9.7(0.0) Introduced on the S6000-ON.

9.4(0.0) Introduced on the S–Series.

Usage Information Use this command to add the IPv4 catch-all route (0.0.0.0/0) in the LPM route forwarding table if it was

deleted using the no ip unknown-unicast command previously. This will be the default conguration

after reload.

ipv6 unknown-unicast

Disable soft forwarding of unknown IPv6 destination packets.

S4820T

Syntax

[no] ipv6 unknown-unicast

Defaults Soft forwarding is enabled.