Command Line Interface
4-324
4
Example
This example enables DHCP snooping globally for the switch.
Related Commands
ip dhcp snooping vlan (4-324)
ip dhcp snooping trust (4-325)
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 4-322), 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 4-325).
• 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 (4-322)
ip dhcp snooping trust (4-325)
Console(config)#ip dhcp snooping
Console(config)#
Console(config)#ip dhcp snooping vlan 1
Console(config)#
Summary of Contents for 6128PL2
Page 2: ......
Page 8: ...viii ...
Page 26: ...Contents xviii ...
Page 30: ...Tables xxii ...
Page 52: ...Initial Configuration 2 10 2 ...
Page 308: ...Configuring the Switch 3 256 3 ...
Page 473: ...SNMP Commands 4 165 4 ...
Page 644: ...Command Line Interface 4 336 4 ...
Page 648: ...Software Specifications A 4 A ...
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