IPv6 Addresses

To assign an IPv6 address to an IPv6 Interface, follow these steps:

Procedure

Step 1

Click IPv6 Configuration > IPv6 Addresses.

Step 2

To filter the table, select an interface name, and click Go. The interface appears in the IPv6 Address Table. These fields are described in the Add page except for the following fields:

  • Address Source—Displays one of the address source types: DHCP, System or Static.

  • DAD Status—Displays whether Duplicate Access Detection is active or not and the DAD state. This column does not appear for interfaces of Tunnel type.

  • Preferred Lifetime—Displays the entry preferred lifetime.

  • Valid Lifetime—Displays the entry valid lifetime.

  • Expiry Time—Displays the expiry time.

Step 3

Click Add.

Step 4

Enter values for the fields.

OptionDescription

IPv6 Interface

Displays the interface on which the IPv6 address is to be defined. If an * is displayed, this means that the IPv6 interface is not enabled but has been configured.

IPv6 Address Type

Select the type of the IPv6 address to add.

  • Link Local—An IPv6 address that uniquely identifies hosts on a single network link. A link local address has a prefix of FE80, is not routable, and can be used for communication only on the local network. Only one link local address is supported. If a link local address exists on the interface, this entry replaces the address in the configuration.

  • Global—An IPv6 address that is a global Unicast IPV6 type that is visible and reachable from other networks.

  • Anycast—The IPv6 address is an Anycast address. This is an address that is assigned to a set of interfaces that typically belong to different nodes. A packet sent to an Anycast address is delivered to the closest interface—as defined by the routing protocols in use—identified by the Anycast address.

    Note

    Anycast cannot be used, if the IPv6 address is on an ISATAP interface.

IPv6 Address

In addition to the default link local and Multicast addresses, the device also automatically adds global addresses to the interface based on the router advertisements it receives. The device supports a maximum of 128 addresses at the interface. Each address must be a valid IPv6 address that is specified in hexadecimal format by using 16-bit values separated by colons.

Prefix Length

The length of the Global IPv6 prefix is a value from 3-128 indicating the number of the high-order contiguous bits of the address comprise the prefix (the network portion of the address).

EUI-64

Select Enable to use the EUI-64 parameter to identify the interface ID portion of the Global IPv6 address by using the EUI-64 format based on a device MAC address.

Step 5

Click Apply. The Running Configuration file is updated.