Cisco Catalyst 3750-X User Manual

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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
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Chapter 43 Configuring IPv6 Unicast Routing
Configuring IPv6
Default IPv6 Configuration
Configuring IPv6 Addressing and Enabling IPv6 Routing
This section describes how to assign IPv6 addresses to individual Layer 3 interfaces and to globally
forward IPv6 traffic on the switch.
Before configuring IPv6 on the switch, consider these guidelines:
• Be sure to select a dual IPv4 and IPv6 SDM template.
• Not all features discussed in this chapter are supported by the switch. See the “Unsupported IPv6
Unicast Routing Features” section on page 43-8.
• In the ipv6 address interface configuration command, you must enter the ipv6-address and
ipv6-prefix variables with the address specified in hexadecimal using 16-bit values between colons.
The prefix-length variable (preceded by a slash [/]) is a decimal value that shows how many of the
high-order contiguous bits of the address comprise the prefix (the network portion of the address).
To forward IPv6 traffic on an interface, you must conf
igure a global IPv6 address on that interface.
Configuring an IPv6 address on an interface automatically configures a link-local address and activates
IPv6 for the interface. The configured interface automatically joins these required multicast groups for
that link:
• solicited-node multicast group FF02:0:0:0:0:1:ff00::/104 for each unicast address assigned to the
interface (this address is used in the neighbor discovery process.)
• all-nodes link-local multicast group FF02::1
• all-routers link-local multicast group FF02::2
For more information about configuring IPv6 routing, see the “Implementing Addressing and Basic
Connec
tivity for IPv6” chapter in the Cisco IOS IPv6 Configuration Library on Cisco.com.
Ta ble 43-1 Default IPv6 Configuration
Feature Default Setting
SDM template Default desktop.
IPv6 routing Disabled globally and on all interfaces
CEFv6 or dCEFv6 Disabled (IPv4 CEF and dCEF are enabled by default)
Note When IPv6 routing is enabled, CEFv6 and dCEF6 are automatically
enabled.
IPv6 addresses None configured

Cisco Catalyst 3750-X Specifications

General

Brand	Cisco
Model	Catalyst 3750-X
Category	Switch
Language	English