Allied Telesis AT-S95 CLI (AT-8000GS Series) - Manual (Page 157)

IPv6 Addressing Commands
Page 157
Default Configuration
This command has no default setting.
Command Mode
Privileged EXEC mode.
User Guidelines
•
The associated interface of a MAC address can be aged out from the FDB table, so that the Interface field
can be empty.
• When an ARP entry is associated with an IP interface that is defined on a port or port-channel, the VLAN field
is empty.
• The possible neighbor cache states are:
– INCMP (Incomplete) — Address resolution is being performed on the entry. Specifically, a Neighbor
Solicitation has been sent to the solicited-node multicast address of the target, but the corresponding
Neighbor Advertisement has not yet been received.
– REACH (Reachable) — Positive confirmation was received within the last ReachableTime milliseconds
that the forward path to the neighbor was functioning properly. While REACHABLE, no special action
takes place 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 STALE, no action takes place 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, and 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, a Neighbor Solicitation is sent and
the state is changed to PROBE.
– PROBE — A reachability confirmation is actively sought by retransmitting Neighbor Solicitations every
RetransTimer milliseconds until a reachability confirmation is received.
Example
The following example displays IPv6 neighbor discovery cache information.
clear ipv6 neighbors
The clear ipv6 neighbors Privileged EXEC mode command deletes all entries in the IPv6 neighbor discovery
cache, except static entries.
Syntax
clear ipv6 neighbors
console# show ipv6 neighbors dynamic
Interface IPv6 address HW address State
------- ---------- --------- -------
VLAN 1 2031:0:130F::010:B504:DBB4 00:10:B5:04:DB:4B REACH
VLAN 1 2031:0:130F::050:2200:2AA4 00:50:22:00:2A:A4 REACH