CLI Guide

Layer 3 Routing Commands 1581
Example
The following example globally enables Ipv6 unicast datagram forwarding.
console(config)#ipv6 unicast-routing
console(config)#no ipv6 unicast-routing
ipv6 unreachables
Use the ipv6 unreachables command to enable the generation of ICMPv6
Destination Unreachable messages. Use the no form of this command to
prevent the generation of ICMPv6 Destination Unreachable messages.
Syntax
ipv6 unreachables
no ipv6 unreachables
Default Configuration
ICMPv6 Destination Unreachable messages are enabled by default.
Command Mode
Interface Configuration (VLAN) mode
User Guidelines
There are no user guidelines for this command.
Example
console(config-if-vlan10)#ipv6 unreachables
show ipv6 brief
Use the show ipv6 brief command to display the IPv6 status of forwarding
mode and IPv6 unicast routing mode.
Syntax
show ipv6 brief