ZyXEL Communications GS2210 Series User Manual page 339

Table 166 Management > Neighbor Table (continued)
LABEL
Status
Type
GS2210 Series User's Guide
DESCRIPTION
This field displays whether the neighbor IPv6 interface is reachable. In IPv6, "reachable"
means an IPv6 packet can be correctly forwarded to a neighbor node (host or router) and the
neighbor can successfully receive and handle the packet. The available options in this field
are:
• reachable (R): The interface of the neighboring device is reachable. (The Switch has
received a response to the initial request.)
• stale (S): The last reachable time has expired and the Switch is waiting for a response to
another initial request. The field displays this also when the Switch receives an
unrequested response from the neighbor's interface.
• delay (D): The neighboring interface is no longer known to be reachable, and traffic has
been sent to the neighbor recently. The Switch delays sending request packets for a short
to give upper-layer protocols a chance to determine reachability.
• probe (P): The Switch is sending request packets and waiting for the neighbor's response.
• invalid (IV): The neighbor address is with an invalid IPv6 address.
• unknown (?): The status of the neighboring interface can not be determined for some
reason.
• incomplete (I): Address resolution is in progress and the link-layer address of the neighbor
has not yet been determined. The interface of the neighboring device did not give a
complete response.
This field displays the type of an address mapping to a neighbor interface. The available
options in this field are:
• other (O): none of the following type.
• local (L): A Switch interface is using the address.
• dynamic (D): The IP address to MAC address can be successfully resolved using IPv6
Neighbor Discovery protocol. Is it similar as IPv4 ARP (Address Resolution protocol).
• static (S): The interface address is statically configured.
Chapter 45 Neighbor Table
339