Service Manual
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.
ipv4 unicast-host-route
Enable programming of IPv4 /32 route prexes in L3 host table.
Syntax
[no] ipv4 unicast-host-route
Defaults Disabled by default. By default, all the IPv4 route prexes are installed only in the LPM table.
Command Modes CONFIGURATION
Command History
Version Description
9.7(0.0) Introduced on the S6000-ON.
9.3(0.1) Introduced on the S6000.
Usage Information A warning message is displayed when you enter this command stating that this setting takes eect for
existing routes only when IPv4 route prexes are cleared from the routing table (RTM). To disable this
functionality, use no ipv4 unicast-host-route command.
Example
Dell(conf)#ip unicast-host-route
Warning: Command will take effect for existing routes only when IPv4
670
IPv4 Routing