ZyXEL GS1500-24P User Guide - Page 133

Dynamic ARP Setting

Page 133 highlights

Chapter 18 Dynamic ARP 18.3.4 MAC-IP Binding The Switch uses a binding table to distinguish between authorized and unauthorized DHCP and ARP packets in your network. A binding contains these key attributes: • MAC address • VLAN ID • IP address When the Switch receives a DHCP or ARP packet, it looks up the appropriate MAC address, VLAN ID and IP address in the binding table. If there is a binding, the Switch forwards the packet. If there is not a binding, the Switch discards the packet. 18.4 Dynamic ARP Setting Click Security > Dynamic ARP > Dynamic ARP Setting in the navigation panel. The screen will display as shown below. Figure 64 Security > Dynamic ARP > Dynamic ARP Setting The following table describes the labels in this screen. Table 44 Security > Dynamic ARP > Dynamic ARP Setting LABEL DESCRIPTION State Select Enable to activate Dynamic ARP on the Switch. Select Disable to deactivate Dynamic ARP on the Switch. Apply Note: You must activate dynamic ARP first if you want to add static ARP table entries. Click Apply to save your changes to the Switch. GS1500-24P User's Guide 133

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Chapter 18 Dynamic ARP
GS1500-24P User’s Guide
133
18.3.4
MAC-IP Binding
The Switch uses a binding table to distinguish between authorized and
unauthorized DHCP and ARP packets in your network. A binding contains these
key attributes:
MAC address
VLAN ID
IP address
When the Switch receives a DHCP or ARP packet, it looks up the appropriate MAC
address, VLAN ID and IP address in the binding table. If there is a binding, the
Switch forwards the packet. If there is not a binding, the Switch discards the
packet.
18.4
Dynamic ARP Setting
Click
Security
>
Dynamic ARP
>
Dynamic ARP Setting
in the navigation
panel. The screen will display as shown below.
Figure 64
Security > Dynamic ARP > Dynamic ARP Setting
The following table describes the labels in this screen.
Table 44
Security > Dynamic ARP > Dynamic ARP Setting
LABEL
DESCRIPTION
State
Select
Enable
to activate Dynamic ARP on the Switch.
Select
Disable
to deactivate Dynamic ARP on the Switch.
Note: You must activate dynamic ARP first if you want to add static
ARP table entries.
Apply
Click
Apply
to save your changes to the Switch.