ZyXEL ES3500-8PD User Guide - Page 225
Advanced Application > IP Source Guard >, DHCP Snooping > Con gt; Port
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Chapter 26 IP Source Guard Table 84 DHCP Snooping Configure (continued) LABEL Renew DHCP Snooping URL DESCRIPTION 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. Apply Cancel 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 26.4 on page 221). 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. Click this to reset the values in this screen to their last-saved values. 26.5.1 DHCP Snooping Port Configure Use this screen to specify whether ports are trusted or untrusted ports for DHCP snooping. Note: The Switch will drop all DHCP requests if you enable DHCP snooping and there are no trusted ports. You can also specify the maximum number for DHCP packets that each port (trusted or untrusted) can receive each second. To open this screen, click Advanced Application > IP Source Guard > DHCP Snooping > Configure > Port. Figure 121 DHCP Snooping Port Configure ES3500 Series User's Guide 225