Configuring Ipv4 And Ipv6 Protocol Stacks - Cisco 3750G - Catalyst Integrated Wireless LAN Controller Configuration Manual

Chapter 36 Configuring IPv6 Unicast Routing
To remove an IPv6 address from an interface, use the no ipv6 address ipv6-prefix/prefix length eui-64
or no ipv6 address ipv6-address link-local interface 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. To globally disable IPv6
routing, use the no ipv6 unicast-routing global configuration command.
This example shows how to enable IPv6 with both a link-local address and a global address based on the
IPv6 prefix 2001:0DB8:c18:1::/64. The EUI-64 interface ID is used in the low-order 64 bits of both
addresses. Output from the show ipv6 interface EXEC command is included to show how the interface
ID (20B:46FF:FE2F:D940) is appended to the link-local prefix FE80::/64 of the interface.
Switch(config)# sdm prefer dual-ipv4-and-ipv6 default
Switch(config)# ipv6 unicast-routing
Switch(config)# interface fastethernet1/0/11
Switch(config-if)# no switchport
Switch(config-if)# ipv6 address 2001:0DB8:c18:1::/64 eui 64
Switch(config-if)# end
Switch# show ipv6 interface fastethernet1/0/11
FastEthernet1/0/11 is up, line protocol is up
IPv6 is enabled, link-local address is FE80::20B:46FF:FE2F:D940
Global unicast address(es):
2001:0DB8:c18:1:20B:46FF:FE2F:D940, subnet is 2001:0DB8:c18:1::/64 [EUI]
Joined group address(es):
MTU is 1500 bytes
ICMP error messages limited to one every 100 milliseconds
ICMP redirects are enabled
ND DAD is enabled, number of DAD attempts: 1
ND reachable time is 30000 milliseconds
ND advertised reachable time is 0 milliseconds
ND advertised retransmit interval is 0 milliseconds
ND router advertisements are sent every 200 seconds
ND router advertisements live for 1800 seconds
Hosts use stateless autoconfig for addresses.

Configuring IPv4 and IPv6 Protocol Stacks

When you configure an interface with both an IPv4 and IPv6 address, the interface forwards both IPv4
and IPv6 traffic and can send and receive data on both IPv4 and IPv6 networks.
Beginning in privileged EXEC mode, follow these steps to configure a Layer 3 interface to support both
the IPv4 and IPv6 and enable IPv6 routing.
Before configuring IPv6 routing, you must select an SDM template that supports IPv4 and IPv6. If not
Note
already configured, use the sdm prefer dual-ipv4-and-ipv6 {default | routing | vlan} [desktop] global
configuration command to configure a template that supports IPv6. When you select a new template, you
must reload the switch by using the reload privileged EXEC command for the template to take effect.
Command
Step 1 configure terminal
Step 2
ip routing
OL-8550-02
FF02::1
FF02::2
FF02::1:FF2F:D940
Purpose
Enter global configuration mode.
Enable routing on the switch.
Catalyst 3750 Switch Software Configuration Guide
Configuring IPv6
36-13