CLI Guide

Defaults Enabled by default. By default, all the IPv6/128 route prefixes are installed only in L3
host table.
Command Modes CONFIGURATION
Command History
Version Description
9.8(1.0) Introduced on the Z9100–ON.
9.7(0.0) Introduced on the S6000-ON.
9.5(0.1) Introduced on the Z9500.
9.3(0.1) Introduced on the S6000.
Usage Information You can use this command to enable programming of /128 route prefixes in L3
host table or in LPM table. A warning message is displayed when you enter this
command stating that this setting takes effect for existing routes only when IPv6
route prefixes are cleared from the routing table (RTM). To enable programming
of /128 route prefixes in LPM table, use no ipv6 unicast-host-route command.
Example
Dell(conf)# ipv6 unicast-host-route
Warning: Command will take effect for existing routes only
when IPv6
route prefixes are cleared from RTM
Dell(conf)#no ipv6 unicast-host-route
Warning: Command will take effect for existing routes only
when IPv6
route prefixes are cleared from RTM
Dell(conf)#
ipv6 nd dns-server
Configures Recursive DNS Server (RDNSS) addresses to be distributed via IPv6 router advertisements to
an IPv6 device.
Syntax
ipv6 nd dns-server {ipv6-RDNSS-address} {lifetime | infinite}
To remove the IPv6 RDSS configuration, use no ipv6 nd dns-server {ipv6-
RDNSS-address} {lifetime | infinite}
Parameters
ipv6-RDNSS-
address
Enter the IPv6 Recursive DNS Server’s (RDNSS) address. You
can specify up to 4 IPv6 RDNSS server addresses.
lifetime Enter the lifetime in seconds. The amount of time the IPv6
host can use the IPv6 RDNSS address for name resolution.
The range is 0 to 4294967295 seconds. When you specify
the maximum lifetime value of 4294967295 or infinite,
the lifetime does not expire. A value of
0 indicates to the
host that the RDNSS address should not be used. You must
IPv6 Basics
839