Enabling Dhcp Snooping (J-Web Procedure) - Dell PowerConnect J-EX4200-24T Software Manual

Enabling DHCP Snooping (J-Web Procedure)

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DHCP snooping allows the J-EX Series switch to monitor and control DHCP messages
received from untrusted devices connected to the switch. It builds and maintains a
database of valid IP-address/MAC-address (IP-MAC) bindings called the DHCP snooping
database.
You configure DHCP snooping for each VLAN, not for each interface (port). By default,
DHCP snooping is disabled for all VLANs.
To enable DHCP snooping on one or more VLANs by using the J-Web interface:
Select Configure>Security>Port Security
1.
Select one or more VLANs from the VLAN list.
2.
Click the Edit button. If a message appears asking if you want to enable port security,
3.
click Yes .
Select the Enable DHCP Snooping on VLAN
4.
Click after the command has been successfully delivered.
5. OK
NOTE: You can enable or disable port security on the switch at any time by
clicking the Activate
page. If security status is shown as
any VLANs or interfaces (ports), the message asking if you want to enable
port security appears.
Enabling DHCP Snooping (CLI Procedure) on page 2630
Example: Configuring Port Security, with DHCP Snooping, DAI, MAC Limiting, and MAC
Move Limiting, on a J-EX Series Switch on page 2569
Example: Configuring DHCP Snooping, DAI , and MAC Limiting on a J-EX Series Switch
with Access to a DHCP Server Through a Second Switch on page 2593
Example: Configuring DHCP Snooping and DAI to Protect the Switch from ARP Spoofing
Attacks on page 2586
Verifying That DHCP Snooping Is Working Correctly on page 2654
Monitoring Port Security on page 2653
Understanding DHCP Snooping for Port Security on J-EX Series Switches on page 2549
.
check box and then click
or Deactivate button on the Port Security Configuration
Disabled when you try to edit settings for
Chapter 95: Configuring Port Security
OK .
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