Cisco Systems 3750E manual 39-12

Chapter 39 Configuring IPv6 Unicast Routing

Configuring IPv6

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	Select an SDM template that supports IPv4 and IPv6.
	routing vlan}	• 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 has reloaded).
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).
Step 8
	ipv6 address ipv6-prefix/prefix length eui-64	Specify a global IPv6 address with an extended universal
		identifier (EUI) 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
	or	enables IPv6 processing on the 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
	or	IPv6 is enabled on the interface. This command enables IPv6
		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 9
	exit	Return to global configuration mode.
Step 10
	ip routing	Enable IP routing on the switch.
Step 11
	ipv6 unicast-routing	Enable forwarding of IPv6 unicast data packets.
Step 12
	end	Return to privileged EXEC mode.
Step 13
	show ip v6 interface interface-id	Verify your entries.
Step 14
	copy running-config startup-config	(Optional) Save your entries in the configuration file.

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

	Catalyst 3750-E and 3560-E Switch Software Configuration Guide
39-12	OL-9775-02