WEB Configuration Manual
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Click
Network Security -> DHCP Snooping -> Global
at navigation bar in order
to enter DHCP
Snooping global configuration page as following:
Enable global DHCP Snooping protocol to detect all DHCP messages. Relative binding
relationships forms. If client obtains addresses by the switch before the command is configured
previously, switch cannot add relative binding relationships.
After switch’s configuration is saved, restart the switch. All previous configured interface binding
relationship would be dropped. At the meantime, the interface has no binding relationship, and
switch would denying the forwarding of all IP messages after IP source address monitoring function
is enabled. After the interface binding relationship’s backup TFTP server is configured, binding
relationship would be copied to server by TFTP protocol. After switch restarted, it would download
binding lis
t from TFTP server automatically to ensure network’s normal operation.
When configuring backup interface binding relationships, save file name on TFTP server. Therefore,
different switches can copy their interface binding relationship list to the same TFTP server.
The binding relationship list of interface’s MAC address and IP address is dynamic. It is required to
check whether the binding is updated. If there is (like binding items are added or deleted), backup
should be done again. The default time interval is 30 minutes.
6.2.2 DHCP Snooping VLAN Configuration
Click
Network Security -> DHCP Snooping -> VLAN Config
at navigation bar in order
to enter
DHCP Snooping VLAN configuration page as following: