IP Router Configuration Command Reference
216 Router Configuration Guide
no neighbor [ipv6-address]
Context config>router>if>ipv6
Description This command configures an IPv6-to-MAC address mapping on the interface. Use this command if a
directly attached IPv6 node does not support ICMPv6 neighbor discovery, or for some reason, a static
address must be used. This command can only be used on Ethernet media.
The ipv6-address must be on the subnet that was configured from the IPv6 address command or a link-
local address.
Parameters ipv6-address — The IPv6 address assigned to a router interface.
Values
mac-address — Specifies the MAC address for the neighbor in the form of xx:xx:xx:xx:xx:xx or
xx-xx-xx-xx-xx-xx.
neighbor-limit
Syntax neighbor-limit limit [log-only] [threshold percent]
no neighbor-limit
Context config>router>if>ipv6
Description This command configures the maximum amount of dynamic IPv6 neighbor entries that can be learned
on an IP interface.
When the number of dynamic neighbor entries reaches the configured percentage of this limit, an
SNMP trap is sent. When the limit is exceeded, no new entries are learned until an entry expires and
traffic to these destinations will be dropped. Entries that have already been learned will be refreshed.
The no form of the command removes the neighbor-limit.
Default 90 percent
Parameters log-only — Enables the warning message to be sent at the specified threshold percentage, and also
when the limit is exceeded. However, entries above the limit will be learned.
percent — The threshold value (as a percentage) that triggers a warning message to be sent.
Values 0 to 100
ipv6-address: x:x:x:x:x:x:x:x (eight 16-bit
pieces)
x:x:x:x:x:x:d.d.d.d
x: [0 to FFFF]H
d: [0 to 255]D
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