Cisco Systems 3750E manual 39-14

Chapter 39 Configuring IPv6 Unicast Routing

Configuring IPv6

	Command	Purpose
Step 4
	interface interface-id	Enter interface configuration mode, and specify the Layer 3
		interface to configure.
Step 5
	no switchport	Remove the interface from Layer 2 configuration mode (if it is a
		physical interface).
Step 6
	ip address ip-address mask [secondary]	Specify a primary or secondary IPv4 address for the interface.
Step 7
	ipv6 address ipv6-prefix/prefix length eui-64	Specify a global IPv6 address with an interface identifier in the
		low-order 64 bits of the IPv6 address. Specify only the network
		prefix; the last 64 bits are automatically computed from the
		switch MAC address. This enables IPv6 processing on the
	or	interface.
	ipv6 address ipv6-addresslink-local	Specify a link-local address on the interface to be used instead
		of the link-local address that is automatically configured when
		IPv6 is enabled on the interface. This command enables IPv6
	or	processing on the interface.
	ipv6 enable	Automatically configure an IPv6 link-local address on the
		interface, and enable the interface for IPv6 processing. The
		link-local address can only be used to communicate with nodes
		on the same link.
Step 8
	end	Return to privileged EXEC mode.
Step 9
	show interface interface-id	Verify your entries.
	show ip interface interface-id
	show ip v6 interface interface-id
Step 10
	copy running-config startup-config	(Optional) Save your entries in the configuration file.

To disable IPv4 routing, use the no ip routing global configuration command. To disable IPv6 routing, use the no ipv6 unicast-routingglobal configuration command. To remove an IPv4 address from an interface, use the no ip address ip-address mask interface configuration command. To remove an IPv6 address from an interface, use the no ipv6 address ipv6-prefix/prefix length eui-64or no ipv6 address ipv6-addresslink-localinterface configuration command. To remove all manually configured IPv6 addresses from an interface, use the no ipv6 address interface configuration command without arguments. To disable IPv6 processing on an interface that has not been explicitly configured with an IPv6 address, use the no ipv6 enable interface configuration command.

This example shows how to enable IPv4 and IPv6 routing on an interface.

Switch(config)# sdm prefer dual-ipv4-and-ipv6 default

Switch(config)# ip routing

Switch(config)# ipv6 unicast-routing

Switch(config)# interface gigabitethernet1/0/11

Switch(config-if)# no switchport

Switch(config-if)#ip address 192.168.99.1 244.244.244.0

Switch(config-if)#ipv6 address 2001:0DB8:c18:1::/64 eui 64

Switch(config-if)# end

	Catalyst 3750-E and 3560-E Switch Software Configuration Guide
39-14	OL-9775-02