Reference Guide

ip dhcp snooping
Enable DHCP snooping globally.
S5000
Syntax
[no] ip dhcp snooping
Defaults Disabled
Command
Modes
CONFIGURATION
Command
History
Version 9.0(1.3) Introduced on the S5000.
Usage
Information
When enabled, no learning takes place until you enable snooping on a VLAN. After
disabling DHCP snooping, the binding table deletes and Option 82, IP Source
Guard, and Dynamic ARP Inspection are disabled.
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.
ip dhcp snooping binding
Create a static entry in the DHCP binding table.
S5000
Syntax
[no] ip dhcp snooping binding mac address vlan-id vlan-id ip
ip-address interface type slot/port lease number
Parameters
mac address Enter the keyword mac followed by the MAC address of the
host to which the server is leasing the IP address.
vlan-id vlan-id Enter the keywords vlan-id followed by the VLAN to which
the host belongs. The range is 2 to 4094.
ip ip-address Enter the keyword ip followed by the IP address that the
server is leasing.
interface type Enter the keyword interface followed by the type of
interface to which the host is connected:
• For a Gigabit Ethernet interface, enter the keyword
gigabitethernet.
• For a Ten Gigabit Ethernet interface, enter the keyword
tengigabitethernet.
• For a 40-Gigabit Ethernet interface, enter the keyword
fortyGigE.
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Dynamic Host Configuration Protocol (DHCP)