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ipv6 dhcp snooping vlan
Enable ipv6 DHCP Snooping on VLAN or range of VLANs.
Syntax
[no] ip dhcp snooping vlan vlan-id
To disable the ipv6 dhcp snooping on VLAN basis or range of VLAN, use the no ipv6 dhcp snooping
vlan <vlan-id> command.
Parameters
vlan-id Enter the name of a VLAN id or list of the VLANs to enable DHCP Snooping.
Defaults Disabled
Command Modes CONFIGURATION
Supported Modes Full–Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.7(0.0) Introduced on the MXL.
ip dhcp relay
Enable Option 82.
Syntax
ip dhcp relay information-option [remote-id | trust-downstream]
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
Supported Modes Full–Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
show ip dhcp snooping
Display the contents of the DHCP binding table or display the interfaces configured with IP Source Guard.
Syntax
show ip dhcp snooping [binding | source-address-validation]
Parameters
binding Display the interfaces configured with IP Source Guard.
source-address-
validation
Display the interfaces configured with IP Source Guard.
Defaults none
Command Modes
● EXEC
● EXEC Privilege
Supported Modes Full–Switch
416 Dynamic Host Configuration Protocol