Connectivity Guide

Defaults None
Command Mode INTERFACE
Usage Information
Use this command to disable and re-enable IPv6 forwarding on an interface for security purposes or to recover
from a duplicate address discovery (DAD) failure. The no version of this command disables IPv6 forwarding.
Example
OS10(config)# interface ethernet 1/1/1
OS10(conf-if-eth1/1/1)# ipv6 address 2111:dddd:0eee::22/128
OS10(conf-if-eth1/1/1)# no ipv6 enable
OS10(conf-if-eth1/1/1)# ipv6 enable
Supported Releases 10.3.0E or later
ipv6 address eui-64
Congures a global IPv6 address on an interface by entering only the network prex and length.
Syntax
ipv6 address ipv6-prefix/prefix-length eui-64
Parameters ipv6-prex — Enter an IPv6 prex in x:x::y/mask format.
Defaults None
Command Mode INTERFACE
Usage Information Use this command to manually congure an IPv6 address in addition to the link-local address generated with
stateless autoconguration. Specify only the network prex and length. The 64-bit interface ID automatically
computes from the MAC address. This command enables IPv6 processing on the interface. The no version of this
command removes the IPv6 address conguration.
Example
OS10(config)# interface mgmt 1/1/1
OS10(conf-if-ma-1/1/1)# ipv6 address 2111:dddd:0eee::/64 eui-64
Supported Releases 10.4.0E(R1) or later
ipv6 address link-local
Congures a link-local IPv6 address on the interface to use instead of the link-local address that is automatically congured with stateless
autoconguration.
Syntax
ipv6 address ipv6-prefix link-local
Parameters ipv6-prefix — Enter an IPv6 prex in x:x::y/mask format.
Defaults None
Command Mode INTERFACE
Usage Information
• An interface can have only one link-local address. By default, an IPv6 link-local address automatically generates
with a MAC-based EUI-64 interface ID when a router boots up and IPv6 is enabled. Use this command to
manually congure a link-local address to replace the autocongured address. For example, to congure a more
user-friendly link-local address, replace fe80::eef4:bbff:fefb:fa30/64 with fe80::1/64.
• The no version of this command removes the specied link-local address.
Example
OS10(config)# interface mgmt 1/1/1
OS10(conf-if-ma-1/1/1)# ipv6 address 2111:dddd:0eee::22/64 link-local
404 Layer 3