ZyXEL Communications GS3700 Series Guide de l'utilisateur télécharger pdf (Page 226)

Chapter 24 IP Source Guard

GS3700/XGS3700 Series User’s Guide

226

24.2 IP Source Guard

Use this screen to look at the current bindings for DHCP snooping and ARP inspection. Bindings are

used by DHCP snooping and ARP inspection to distinguish between authorized and unauthorized

packets in the network. The Switch learns the bindings by snooping DHCP packets (dynamic

bindings) and from information provided manually by administrators (static bindings). To open this

screen, click Advanced Application > IP Source Guard.

Figure 134 IP Source Guard

The following table describes the labels in this screen.

24.3 IP Source Guard Static Binding

Use this screen to manage static bindings for DHCP snooping and ARP inspection. Static bindings

are uniquely identified by the MAC address and VLAN ID. Each MAC address and VLAN ID can only

be in one static binding. If you try to create a static binding with the same MAC address and VLAN

Table 104 IP Source Guard

LABEL DESCRIPTION

Index This field displays a sequential number for each binding.

MAC Address This field displays the source MAC address in the binding.

IP Address This field displays the IP address assigned to the MAC address in the binding.

Lease This field displays how many days, hours, minutes, and seconds the binding is valid;

for example, 2d3h4m5s means the binding is still valid for 2 days, 3 hours, 4 minutes

and 5 seconds. This field displays infinity if the binding is always valid (for example, a

static binding).

Type This field displays how the Switch learned the binding.

static: This binding was learned from information provided manually by an

administrator.

dhcp-snooping: This binding was learned by snooping DHCP packets.

VID This field displays the source VLAN ID in the binding.

Port This field displays the port number in the binding. If this field is blank, the binding

applies to all ports.

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ZyXEL Communications GS3700 Series Guide de l'utilisateur Page 226