Reference Guide

a SYN ACK, the router waits for a period of time for the ACK packet to be sent from
the requesting host that will establish the TCP connection.
ip unknown-unicast
Enable IPv4 catch-all route.
S6000
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 configuration 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 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 configuration after reload.
ipv4 unicast-host-route
Enable programming of IPv4 /32 route prefixes in L3 host table.
S6000
Syntax
[no] ipv4 unicast-host-route
Defaults Disabled by default. By default, all the IPv4 route prefixes are installed only in the
LPM table.
Command
Modes
CONFIGURATION
Command
History
Version 9.3(0.1) Introduced on the S6000.
IPv4 Routing
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