Service Manual
56
Virtual Routing and Forwarding (VRF)
Virtual Routing and Forwarding (VRF) allows multiple instances of a routing table to co-exist on the same router at the same time.
ip unknown-unicast
Enable IPv4 catch-all route.
Syntax
ip unknown-unicast
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 conguration 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
9.7(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 conguration
after reload.
ipv6 unknown-unicast
Disable soft forwarding of unknown IPv6 destination packets.
Syntax
[no] ipv6 unknown-unicast
Defaults Soft forwarding is enabled.
Command Modes CONFIGURATION
Virtual Routing and Forwarding (VRF)
1371