Configuration Guide (Supporting R2.2.0.0) Owner's manual

216 Brocade 6910 Ethernet Access Switch Configuration Guide
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10
DHCP Snooping
Example
This example enables MAC address verification.
Console(config)#ip dhcp snooping verify mac-address
Console(config)#
Related Commands
“ip dhcp snooping” on page 212
“ip dhcp snooping vlan” on page 216
“ip dhcp snooping trust” on page 218
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: 1-4093)
Default Setting
Disabled
Command Mode
Global Configuration
Command Usage
• When DHCP snooping enabled globally using the ip dhcp snooping command, 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.
• 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, and DHCP snooping is then disabled on a specific
VLAN, all dynamic bindings learned for this VLAN are removed from the binding table.
Example
This example enables DHCP snooping for VLAN 1.
Console(config)#ip dhcp snooping vlan 1
Console(config)#
Related Commands
“ip dhcp snooping” on page 212
“ip dhcp snooping trust” on page 218