Reference Guide

IPv6 Commands 685
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2+3\new_system_mifs_ARC3_latest\IPv6_Router.fm
DELL CONFIDENTIAL – PRELIMINARY 5/21/14 - FOR PROOF ONLY
To remove the address from the interface, use the no form of this command.
Syntax
ipv6 address ipv6-prefix / prefix-length anycast
no ipv6 address [
ipv6-prefix / prefix-length ]
Parameters
• ipv6-address —Specifies the IPv6 network assigned to the interface. This
argument must be in the form documented in RFC4293 where the address
is specified in hexadecimal using 16-bit values between colons.
•
prefix-length —The length of the IPv6 prefix. A decimal value that
indicates how many of the high-order contiguous bits of the address
comprise the prefix (the network portion of the address). A slash mark
must precede the decimal value.
Default Configuration
No IP address is defined for the interface.
Command Mode
Interface Configuration mode
User Guidelines
An Anycast address 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. Anycast addresses are syntactically
indistinguishable from Unicast addresses because Anycast addresses are
allocated from the Unicast address space. Nodes to which the Anycast address
is assigned must be explicitly configured to recognize that the address is an
Anycast address.
Anycast addresses can be used only by a router, not a host, and Anycast
addresses must not be used as the source address of an IPv6 packet.
The subnet router Anycast address has a prefix concatenated by a series of
zeros (the interface ID). The subnet router Anycast address can be used to
reach a router on the link that is identified by the prefix in the subnet router
Anycast address.