Zyxel GS2200-24 Руководство пользователя онлайн [201/332] 810932

Chapter 25 IP Source Guard

GS2200-8/24 User’s Guide

201

25.5.1 DHCP Snooping Port Configure

Use this screen to specify whether ports are trusted or untrusted ports for DHCP snooping.

Note: If DHCP snooping is enabled but there are no trusted ports, DHCP requests cannot

reach the DHCP server.

Timeout interval Enter how long (10-65535 seconds) the Switch tries to complete a specific update

in the DHCP snooping database before it gives up.

Write delay interval Enter how long (10-65535 seconds) the Switch waits to update the DHCP snooping

database the first time the current bindings change after an update. Once the next

update is scheduled, additional changes in current bindings are automatically

included in the next update.

Renew DHCP

Snooping URL

Enter the location of a DHCP snooping database, and click Renew if you want the

Switch to load it. You can use this to load dynamic bindings from a different DHCP

snooping database than the one specified in Agent URL.

When the Switch loads dynamic bindings from a DHCP snooping database, it does

not discard the current dynamic bindings first. If there is a conflict, the Switch

keeps the dynamic binding in volatile memory and updates the Binding collisions

counter in the DHCP Snooping screen (Section 25.4 on page 196).

Apply Click Apply to save your changes to the Switch’s run-time memory. The Switch

loses these changes if it is turned off or loses power, so use the Save link on the

top navigation panel to save your changes to the non-volatile memory when you

are done configuring.

Cancel Click this to reset the values in this screen to their last-saved values.

Table 70 DHCP Snooping Configure (continued)

LABEL DESCRIPTION