DG-FS4526 User Manual
4-305
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from untrusted ports are dropped.
Example
This example enables DHCP snooping globally for the switch.
Related Commands
ip dhcp snooping vlan (4-305)
ip dhcp snooping trust (4-306)
ip dhcp snooping vlan
This command enables DHCP snooping on the specified VLAN. Use the no form to
restore the default setting.
Syntax
[no] ip dhcp snooping vlan vlan-id
vlan-id - ID of a configured VLAN (Range: 1-4094)
Default Setting
Disabled
Command Mode
Global Configuration
Command Usage
• When DHCP snooping enabled globally using the ip dhcp snooping
command (page 4-303), and enabled on a VLAN with this command, DHCP
packet filtering will be performed on any untrusted ports within the VLAN as
specified by the ip dhcp snooping trust command (page 4-306).
• When the DHCP snooping is globally disabled, DHCP snooping can still be
configured for specific VLANs, but the changes will not take effect until DHCP
snooping is globally re-enabled.
• When DHCP snooping is globally enabled, configuration changes for specific
VLANs have the following effects:
- If DHCP snooping is disabled on a VLAN, all dynamic bindings learned for
this VLAN are removed from the binding table.
Example
This example enables DHCP snooping for VLAN 1.
Related Commands
ip dhcp snooping (4-303)
ip dhcp snooping trust (4-306)
Console(config)#ip dhcp snooping
Console(config)#
Console(config)#ip dhcp snooping vlan 1
Console(config)#
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