Users Guide

Disable IPv6 for duplicate link-local address
OS10(config)# interface ethernet 1/1/1
OS10(conf-if-eth1/1/1)# ipv6 nd dad disable-ipv6-on-dad-failure
Static IPv6 routing
To define an explicit route between two IPv6 networking devices, configure a static route on an interface. Static routing is
useful for smaller networks with only one path to an outside network, or to provide security for certain traffic types in a larger
network.
● Enter the static routing information including the IPv6 address and mask in x:x:x:x::x format in CONFIGURATION mode. The
length is from 0 to 64.
ipv6 route ipv6–prefix/mask {next-hop | interface interface [route-preference]}
○ next-hop — Enter the next-hop IPv6 address in x:x:x:x::x format.
○ interface interface — Enter the interface type then the slot/port or number information.
○ route-preference — (Optional) Enter a route-preference range, from 1 to 255.
After you configure a static IPv6 route, configure the forwarding router’s address on the interface. The IPv6 neighbor interface
must have an IPv6 address configured.
Configure IPv6 static routing and view configuration
OS10(config)# ipv6 route 2111:dddd:0eee::22/128 2001:db86:0fff::2
OS10(config)# do show ipv6 route static
Codes: C - connected
S - static
B - BGP, IN - internal BGP, EX - external BGP
O - OSPF,IA - OSPF inter area, N1 - OSPF NSSA external type 1,
N2 - OSPF NSSA external type 2, E1 - OSPF external type 1,
E2 - OSPF external type 2, > - non-active route
Gateway of last resort is not set
Destination Gateway Dist/Metric Last Change
--------------------------------------------------------------------------
S 2111:dddd:eee::22/12via 2001:db86:fff::2 ethernet1/1/1 1/1 00:01:24
IPv6 destination unreachable
By default, when no matching entry for an IPv6 route is found in the IPv6 routing table, a packet drops and no error message
is sent. You can enable the capability to send an IPv6 destination unreachable error message to the source without
dropping the packet.
Enable IPv6 unreachable destination messaging
OS10(config)# interface ethernet 1/1/8
OS10(conf-if-eth1/1/8)# ipv6 unreachables
IPv6 hop-by-hop options
A hop-by-hop header extension in an IPv6 packet contains options that are processed by all IPv6 routers in the packet's path.
By default, hop-by-hop header options in an IPv6 packet do not process locally. To enable local processing of IPv6 hop-by-hop
options on an interface, use the ipv6 hop-by-hop command.
Enable IPv6 hop-by-hop options forwarding
OS10(config)# interface ethernet 1/1/8
OS10(conf-if-eth1/1/8)# ipv6 hop-by-hop
Layer 3
669