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7.1.1.3
Server Screening
The Switch supports DHCP Server Screening, a feature that denies access to rogue DHCP servers.
That is, when one or more DHCP servers are present on the network and both provide DHCP
services to different distinct groups of clients, the valid DHCP server’s packets will be passed to
the client.
If you want to enable this feature, you must enable the DHCP Snooping function first. The Switch
allows users to configure up to three valid DHCP servers.
If no DHCP servers are configured, it means all DHCP server are valid.
7.1.1.3.1
CLI Configurations
Node
Command
Description
enable
show dhcp-snooping
server
This command displays the valid DHCP server IP.
enable
configure terminal
This command changes the node to configure node.
configure dhcp-snooping server
IPADDR
This command configures a valid DHCP server’s IP.
configure no dhcp-snooping server
IPADDR
This command removes a valid DHCP server’s IP.
7.1.1.3.2
Web Configurations
Parameter
Description
Server Screening Settings
DHCP Server IP
This field configures the valid DHCP server’s IP address.
Apply
Click
Apply
to configure the settings.
Refresh
Click
Refresh
to begin configuring this screen afresh.
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