ZyXEL MES3500-24 User Guide - Page 224

Advanced Application > IP Source Guard &gt, DHCP Snooping > Con gt; Port

Page 224 highlights

Chapter 26 IP Source Guard Table 78 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 220). 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 116 DHCP Snooping Port Configure 224 MES3500-24/24F User's Guide

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Chapter 26 IP Source Guard
MES3500-24/24F User’s Guide
224
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 116
DHCP Snooping Port Configure
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 26.4 on page 220
).
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 78
DHCP Snooping Configure (continued)
LABEL
DESCRIPTION