Command Line Reference Guide

Parameters
remote-id Configure the system to enable the remote-id string in option-82.
trust-downstream Configure the system to trust Option 82 when it is received from the
previous-hop router.
Defaults Disabled
Command Modes CONFIGURATION
Command History
Version 9.0(1.3) Introduced on the S5000.
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.
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