Cisco Catalyst 3560-X Series, Руководство по настройке программного обеспечения

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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-25303-03
Chapter 1 Configuring IPv6 Unicast Routing
Configuring IPv6
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 1-14 .
• 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 configure 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
Connectivity for IPv6” chapter in the
Cisco IOS IPv6 Configuration Library on Cisco.com .
Beginning in privileged EXEC mode, follow these steps to assign an IPv6 address to a Layer 3 interface
and enable IPv6 routing:
Command Purpose
Step 1 configure terminal Enter global configuration mode.
Step 2
sdm prefer dual-ipv4-and-ipv6 { default |
routing | vlan }
Select an SDM template that supports IPv4 and IPv6.
•
default —Set the switch to the default template to balance
system resources.
• routing —Set the switch to the routing template to support
IPv4 and IPv6 routing, including IPv4 policy-based routing.
•
vlan —Maximize VLAN configuration on the switch with
no routing supported in hardware.
Step 3 end Return to privileged EXEC mode.
Step 4
reload Reload the operating system.
Step 5 configure terminal Enter global configuration mode after the switch reloads.
Step 6 interface interface-id Enter interface configuration mode, and specify the Layer 3
interface to configure. The interface can be a physical interface,
a switch virtual interface (SVI), or a Layer 3 EtherChannel.
Step 7 no switchport Remove the interface from Layer 2 configuration mode (if it is a
physical interface).