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Chapter 58 DHCP Snooping
XMG1915 Series User’s Guide
339
58.3 DHCP Snooping Setup
Use this screen to enable DHCP snooping on the Switch (not on specific VLAN), specify the VLAN where
the default DHCP server is located, and configure the DHCP snooping database. The DHCP snooping
database stores the current bindings on a secure, external TFTP server so that they are still available after
a restart.
To open this screen, click SECURITY > DHCP Snooping > DHCP Snp. Setup.
Note: The input string of any field in this screen should not contain [ ? ], [ | ], [ ' ], [ " ], or [ , ].
Figure 244 SECURITY > DHCP Snooping > DHCP Snp. Setup
The following table describes the labels in this screen.
Parse Failures This field displays the number of bindings the Switch has ignored because the Switch was
unable to understand the binding in the DHCP binding database.
Expired Leases This field displays the number of bindings the Switch has ignored because the lease time
had already expired.
Unsupported
VLANs
This field displays the number of bindings the Switch has ignored because the VLAN ID does
not exist anymore.
Table 188 SECURITY > DHCP Snooping > DHCP Snp. Status (continued)
LABEL DESCRIPTION
Table 189 SECURITY > DHCP Snooping > DHCP Snp. Setup
LABEL DESCRIPTION
DHCP Snooping Setup
Active Enable the switch button to enable DHCP snooping on the Switch. You still have to
enable DHCP snooping on specific VLAN and specify trusted ports.
Note: If DHCP is enabled and there are no trusted ports, DHCP requests will
not succeed.
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