Configuring ipv4 and ipv6 protocol stacks, Configuring ipv4 and ipv6 protocol stacks 6 – Brocade BigIron RX Series Configuration Guide User Manual

Page 1254

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BigIron RX Series Configuration Guide

53-1002484-04

Configuring IPv4 and IPv6 protocol stacks

44

Configuring a link-local IPv6 address as the switch’s
system-wide address

To enable IPv6 and automatically configure a global interface enter commands such as the
following.

BigIron RX(config)# ipv6 enable

This command enables IPv6 on the switch and specifies that the interface is assigned an
automatically computed link-local address.

Syntax: [no] ipv6 enable

To override a link-local address that is automatically computed for the global interface with a
manually configured address, enter a command such as the following.

BigIron RX(config)# ipv6 address FE80::240:D0FF:FE48:4672 link-local

This command explicitly configures the link-local address FE80::240:D0FF:FE48:4672 for the
global interface.

Syntax: ipv6 address <ipv6-address> link-local

You must specify the <ipv6-address> parameter in hexadecimal using 16-bit values between
colons as documented in RFC 2373.

The link-local keyword indicates that the router interface should use the manually configured
link-local address instead of the automatically computed link-local address.

Configuring IPv4 and IPv6 protocol stacks

One situation in which you must configure a router to run both IPv4 and IPv6 protocol stacks is if it
is deployed as an endpoint for an IPv6 over IPv4 tunnel.

Each router interface that you want to send and receive both IPv4 and IPv6 traffic must be
configured with an IPv4 address and an IPv6 address. (An alternative to configuring a router
interface with an IPv6 address is to explicitly enable IPv6 using the ipv6 enable command. For
more information about using this command, refer to

“Configuring a link-local IPv6 address”

on

page 1172.)

To configure a router interface to support both the IPv4 and IPv6 protocol stacks, use commands
such as the following.

BigIron RX(config)# ipv6 unicast-routing

BigIron RX(config)# interface ethernet 3/1

BigIron RX(config-if-e100-3/1)# ip address 192.168.1.1 255.255.255.0

BigIron RX(config-if-e100-3/1)# ipv6 address 2001:200:12d:1300::/64 eui-64

These commands globally enable IPv6 routing on the router and configure an IPv4 address and an
IPv6 address for Ethernet interface 3/1.

Syntax: [no] ipv6 unicast-routing

To disable IPv6 traffic globally on the router, enter the no form of this command.

Syntax: ip address <ip-address> <sub-net-mask> [secondary]

You must specify the <ip-address> parameter using 8-bit values in dotted decimal notation.

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