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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
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Chapter 36 Configuring IPv6 Unicast Routing
Configuring IPv6
Default IPv6 Configuration
Table 36-1 shows the default IPv6 configuration.
Configuring IPv6 Addressing and Enabling IPv6 Routing
Follow these rules or limitations when configuring IPv6 on the switch:
• 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 36-7.
• 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 (the address for 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.
Ta b l e 36-1 Default IPv6 Configuration
Feature Default Setting
SDM template Default.
IPv6 routing Disabled globally and on all interfaces.
CEFv6 Disabled (IPv4 CEF is enabled by default).
Note When IPv6 routing is enabled, CEFv6 is automatically enabled.
IPv6 addresses None configured.
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