IP I
NTERFACE
C
OMMANDS
36-38
ipv6 neighbor
This command configures a static entry in the IPv6 neighbor discovery
cache. Use the no form to remove a static entry from the cache.
Syntax
ipv6 neighbor ipv6-address vlan vlan-id hardware-address
no ipv6 mtu
• ipv6-address - The IPv6 address of a neighbor device that can be
reached through one of the network interfaces configured on this
router. You can specify either a link-local or global unicast address
formatted according to RFC 2373 “IPv6 Addressing Architecture,”
using 8 colon-separated 16-bit hexadecimal values. One double
colon may be used in the address to indicate the appropriate number
of zeros required to fill the undefined fields.
• vlan-id - VLAN ID (Range: 1-4093)
• hardware-address - The 48-bit MAC layer address for the neighbor
device. This address must be formatted as six hexadecimal pairs
separated by hyphens.
Default Setting
None
Command Mode
Global Configuration
Command Usage
• Address Resolution Protocol (ARP) has been replaced in IPv6 with
the Neighbor Discovery Protocol (NDP). The ipv6 neighbor
command is similar to the mac-address-table static command
(page 28-2) that is implemented using ARP.
• Static entries can only be configured on an IPv6-enabled interface.
• The router does not determine whether a static entry is reachable
before placing it in the IPv6 neighbor discovery cache.
• If the specified entry was dynamically learned through the IPv6
neighbor discovery process, and already exists in the neighbor
discovery cache, it is converted to a static entry. Static entries in the
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