Neighbor Table; Chapter 50 Neighbor Table; Ipv6 Neighbor Table Overview; Viewing The Ipv6 Neighbor Table - ZyXEL Communications XS1920 Series User Manual

This chapter introduces the IPv6 neighbor table.

50.1 IPv6 Neighbor Table Overview

An IPv6 host is required to have a neighbor table. If there is an address to be resolved or verified,
the Switch sends out a neighbor solicitation message. When the Switch receives a neighbor
advertisement in response, it stores the neighbor's link-layer address in the neighbor table. You can
also manually create a static IPv6 neighbor entry using the Basic Setting > IPv6 > IPv6
Configuration > IPv6 Neighbor Setup screen.
When the Switch needs to send a packet, it first consults other table to determine the next hop.
Once the next hop IPv6 address is known, the Switch looks into the neighbor table to get the link-
layer address and sends the packet when the neighbor is reachable. If the Switch cannot find an
entry in the neighbor table or the state for the neighbor is not reachable, it starts the address
resolution process. This helps reduce the number of IPv6 solicitation and advertisement messages.

50.2 Viewing the IPv6 Neighbor Table

Use this screen to view IPv6 neighbor information on the Switch. Click Management > Neighbor
Table in the navigation panel to display the screen as shown.
Figure 266 Management > Neighbor Table
The following table describes the labels in this screen.
Table 191 Management > Neighbor Table
LABEL
Index
Interface
Neighbor
Address
MAC
DESCRIPTION
This field displays the index number of each entry in the table.
This field displays the ID number of the IPv6 interface on which the IPv6 address is created or
through which the neighboring device can be reached.
This field displays the IPv6 address of the Switch or a neighboring device.
This field displays the MAC address of the IPv6 interface on which the IPv6 address is
configure or the MAC address of the neighboring device.
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