Reference Guide

RA messages, the switch must be in Router mode with IPv6 forwarding enabled and stateless
autoconfiguration disabled (no ipv6 address autoconfig command).
● The no ipvd nd send-ra command disables RA messages.
Example
OS10(config)# interface ethernet 1/2/3
OS10(conf-if-eth1/2/3)# ipv6 nd send-ra
Supported
Releases
10.4.0E(R1) or later
ipv6 route
Configures a static IPv6 static route.
Syntax
ipv6 route [dst-vrf vrf-name] ipv6–prefix mask {next-hop | interface
interface-type [route-preference]}
Parameters
● dst-vrf vrf-name — (Optional) Enter the keyword vrf followed by the name of the VRF to
install IPv6 routes in that VRF.
● ipv6-prefix — Enter the IPv6 address in x:x:x:x::x format
● mask — Enter the mask in slash prefix-length format (/x)
● next-hop — Enter the next-hop IPv6 address in x:x:x:x::x format.
● interface interface-type — Enter the interface type then the slot/port or number
information. The interface types supported are: Ethernet, port-channel, VLAN, and Null.
● route-preference — (Optional) Enter a route-preference range (1 to 255).
Default Not configured
Command Mode CONFIGURATION
Usage
Information
● When the interface fails, the system withdraws the route. The route reinstalls when the interface
comes back up. When a recursive resolution is broken, the system withdraws the route. The route
reinstalls when the recursive resolution is satisfied. After you create an IPv6 static route interface, if
you do not assign an IP address to a peer interface, you must manually ping the peer to resolve the
neighbor information.
● The no version of this command deletes the IPv6 route configuration.
Example
OS10(config)# ipv6 route 2111:dddd:0eee::22/128 2001:db86:0fff::2
OS10(config)# ipv6 route 2111:dddd:0eee::22/128 interface null 0
Supported
Releases
10.2.0E or later
ipv6 unreachables
Enables the generation of error messages on an interface for IPv6 packets with unreachable destinations.
Syntax
ipv6 unreachables
Parameters None
Defaults ICMPv6 unreachable messages are not sent.
Command Mode INTERFACE
Usage
Information
● By default, when no matching entry for an IPv6 route is found in the IPv6 routing table, the packet is
dropped and no error message is sent. Use this command to enable sending an IPv6 destination
unreachable error message to the source without dropping the packet.
● The no version of this command disables the generation of unreachable destination messages.
360 Layer 3