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Chapter 4. Routing | 245
ProSafe® Gigabit L3 Managed Stackable Switches Software Administration Manual
Neighbor State Specifies the state of the neighbor cache entry.
Following are the states for dynamic entries in the
IPv6 neighbor discovery cache:
• Incmp - Address resolution is being performed on
the entry. A neighbor solicitation message has
been sent to the solicited-node multicast address
of the target, but the corresponding neighbor
advertisement message has not yet been received.
• Reach - Positive confirmation was received
within the last Reachable Time milliseconds that
the forward path to the neighbor was functioning
properly. While in REACH state, the device takes
no special action as packets are sent.
• Stale - More than ReachableTime milliseconds
have elapsed since the last positive confirmation
was received that the forward path was functioning
properly. While in STALE state, the device takes no
action until a packet is sent.
• Delay - More than ReachableTime milliseconds
have elapsed since the last positive confirmation
was received that the forward path was functioning
properly. A packet was sent within the last
DELAY_FIRST_PROBE_TIME seconds. If no
reachability confirmation is received within
DELAY_FIRST_PROBE_TIME seconds of entering
the DELAY state, send a neighbor solicitation
message and change the state to PROBE.
• Probe - A reachability confirmation is actively
sought by resending neighbor solicitation
messages every RetransTimer milliseconds until a
reachability confirmation is received.
Last Updated Time since the address was confirmed to be
reachable.
Table 18.
Field Description
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