KB.15.15

INCMP

(Incomplete): Neighbor address resolution is in progress, but has not yet

been determined.

REACH

(Reachable): The neighbor is known to have been reachable recently.

STALE

A timeout has occurred for reachability of the neighbor, and an unsolicited

discovery packet has been received from the neighbor address. If the path

to the neighbor is then used successfully, this state is restored to REACH.

DELAY

Indicates waiting for a response to traffic sent recently to the neighbor

address. The time for determining the neighbor's reachability has been

extended.

PROBE

The neighbor may not be reachable. Periodic, unicast neighbor solicitations

are being sent to verify reachability.

Example 16 Neighbor cache without specifying a VLAN

HP Switch(config)# show ipv6 neighbor

IPv6 ND Cache Entries

IPv6 Address MAC Address State Type Port

--------------------------- ------------- ----- ------- ----

2001:db8:260:212::101 0013c4-dd14b0 STALE dynamic 1

2001:db8:260:214::1:15 001279-88a100 REACH local

fe80::1:1 001279-88a100 REACH local

fe80::10:27 001560-7aadc0 REACH dynamic 3

fe80::213:c4ff:fedd:14b0 0013c4-dd14b0 REACH dynamic 1

Example 17 Neighbor cache content for a specific VLAN

HP Switch(config)# show ipv6 neighbor vlan 10

IPv6 ND Cache Entries

IPv6 Address MAC Address State Age Port

------------------------ ------------- ----- ------------- ----

2001:db8:260:212::101 0013c4-dd14b0 STALE 5h:13m:44s 1

2001:db8:260:214::1:15 001279-88a100 REACH 11h:15m:23s 17

fe80:1a3::1:1 001279-88a100 REACH 9h:35m:11s 12

fe80:::10:27 001560-7aadc0 REACH 22h:26m:12s 3

fe80::213:c4ff:fedd:14b0 0013c4-dd14b0 REACH 23 0h:32m:36s 1

Clearing the Neighbor Cache

You can clear the contents of the neighbor cache using the commands described in this section.

For more information, see “Clear the neighbor cache” (page 53).

Syntax:

clear ipv6 neighbors

Executed at the global config level, this command removes all non-local IPv6

neighbor addresses and corresponding MAC addresses from the neighbor cache,

except neighbor entries specified as next-hops for active routes. Note that the Layer-2

address information for any next-hop route is cleared until the route is refreshed in

the neighbor cache.

Viewing the neighbor cache 37