D-Link DES-7200, Cli Reference Manual, Page: 672 / 1180

Chapter 36 IPv6 Configuration Commands DES-7200 CLI Reference Guide
36-24
Field Meaning
IPv6 Address IPv6 address of the Neighbor
Linklayer Addr
Link address, namely, MAC address. If it is
not available, incomplete is displayed.
Interface Interface the neighbor locates.
State
State of the neighbor: state/H(R)
The values of STATE are as below:
INCMP (Incomplete): The address
resolution of the neighbor is underway, the
NS is sent, but the NA is not received.
REACH (Reachable): The switch is
connected with the neighbor. In this state,
the switch takes no additional action when
sending packets to the neighbor.
STALE: The reachable time of the neighbor
expires. In this state, the switch takes no
additional action; it only starts NUD
(Neighbor Unreachability Detection) after a
packet is sent to the neighbor.
DELAY: A packet is sent to the neighbor in
STALE state. If the STALE state changes
to DELAY, DELAY will be changed to
PROBE if no neighbor reachability
notification is received within
DELAY_FIRST_PROBE_TIME seconds
(5s), the NS will be sent to the neighbor to
start NUD.
PROBE: The NUD is started to check the
reachability of the neighbor. The NS
packets are sent to the neighbor at the
interval of RetransTimer milliseconds until
the response from the neighbor is received
or the number of the sent NSs hits
MAX_UNICAST_SOLICIT(3).
?: Unknown state.
/R
—indicate the neighbor is considered as
a device
/H: The neighbor is a host.