Chapter 26 IP Source Guard
VES1724-56 User’s Guide
259
26.5.1 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.
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 153 DHCP Snooping Port Configure
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 26.4 on page 255).
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 113 DHCP Snooping Configure (continued)
LABEL DESCRIPTION
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