IP Configuration
273
Instruction Manual - NXA-ENET8-POE+
Showing the IPv6 Neighbor Cache
Use the System > IPv6 Configuration (Show IPv6 Neighbor Cache) page to display the IPv6 addresses detected for neighbor
devices.
The following table lists the options on this page:
Perform these steps to show neighboring IPv6 devices:
1.
Click
System
>
IPv6 Configuration
.
2.
Select
Show IPv6 Neighbors
from the Action list.
Show IPv6 Neighbors - Display Description
IPv6 Address
IPv6 address of neighbor.
Age
The time since the address was verified as reachable (in seconds). A static entry is indicated by the
value Permanent.
Link-layer Address
Physical layer MAC address.
State
The following states are used for dynamic entries:
• Incomplete - Address resolution is being carried out on the entry. A neighbor solicitation
message has been sent to the multicast address of the target, but it has not yet returned a
neighbor advertisement message.
• Invalid - An invalidated mapping. Setting the state to invalid dis-associates the interface
identified with this entry from the indicated mapping (RFC 4293).
• Reachable - Positive confirmation was received within the last ReachableTime interval that the
forward path to the neighbor was functioning. While in Reachable state, the device takes no
special action when sending packets.
• Stale - More than the ReachableTime interval has elapsed since the last positive confirmation
was received that the forward path was functioning. While in Stale state, the device takes no
action until a packet is sent.
• 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.
• Probe - A reachability confirmation is actively sought by re-sending neighbor solicitation
messages every RetransTimer interval until confirmation of reachability is received.
• Unknown - Unknown state.
The following states are used for static entries:
• Incomplete - The interface for this entry is down.
• Permanent - Indicates a static entry.
• Reachable - The interface for this entry is up. Reachability detection is not applied to static
entries in the IPv6 neighbor discovery cache.
VLAN
VLAN interface from which the address was reached.
FIG. 327
Showing IPv6 Neighbors