Dell PowerEdge FN I/O Module Command Line Reference Guide 9.10(0.0)

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ip dhcp snooping

Enable DHCP snooping globally.

Syntax

[no] ip dhcp snooping

Defaults

Disabled

Command Modes

CONFIGURATION

Supported Modes

Full–Switch

Command History

Version	Description
9.9(0.0)	Introduced on the FN IOM.
8.3.16.1	Introduced on the MXL 10/40GbE Switch IO Module.

Usage Information

When enabled, no learning takes place until you enable snooping on a VLAN. After disabling DHCP snooping, the binding table is deleted, and Option 82, IP Source Guard, and Dynamic ARP Inspection are disabled.

Introduced in the Dell Networking OS version 7.8.1.0, DHCP snooping was available for Layer 3 only and dependent on DHCP Relay Agent (ip helper-address). The Dell Networking OS version 8.2.1.0 extends DHCP Snooping to Layer 2, and you do not have to enable relay agent to snoop on Layer 2 interfaces.

Related Commands

ip dhcp snooping vlan — enables DHCP snooping on one or more VLANs.