Chapter 26
| IP Interface Commands
Neighbor Discovery
– 681 –
Related Commands
show mac-address-table (432)
State (continued) D (Delay) - More than the ReachableTime interval has elapsed since the last
positive confirmation was received that the forward path was functioning. A
packet was sent within the last DELAY_FIRST_PROBE_TIME interval. If no
reachability confirmation is received within this interval after entering the DELAY
state, the switch will send a neighbor solicitation message and change the state
to PROBE.
P1 (Probe) - A reachability confirmation is actively sought by re-sending neighbor
solicitation messages every RetransTimer interval until confirmation of
reachability is received.
U (Unknown) - Unknown state.
The following states are used for static entries:
I1 (Incomplete)-The interface for this entry is down.
R (Reachable) - The interface for this entry is up. Reachability detection is not
applied to static entries in the IPv6 neighbor discovery cache.
P2 (Permanent) - Indicates a static entry.
VLAN VLAN interface from which the address was reached.
Table 144: show ipv6 neighbors - display description (Continued)
Field Description
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