[no] dhcpv6-snooping [vlan <VLAN-ID-RANGE>]


Enable or disable the global administrative status of DHCPv6 snooping. You must enable DHCP snooping globally (dhcpv6-snooping) to enable snooping on any VLAN.

Parameters and options


Disabling global administrative status (no dhcpvt-snooping) disables snooping on all VLANs.


Disables snooping on a VLAN or a range of VLANs. Requires enabling DHCP global snooping (dhcpv6-snooping)

Validation rules for DHCPv6 global snooping



Verify whether entered ipv6 address is valid

Invalid Ipv6 address:< ipv6-address>

If an invalid server address is configured

Invalid IP address. Only IPv6 unicast or link-local addresses are supported.

If the limit on configuring the authorized servers had reached.

Cannot configure the authorized server as only 20 authorized servers can be configured.

Validation rules for DHCPv6–snooping VLAN



if the VLAN is a SVLAN and the bridge mode is mixed mode

DHCPv6-snooping is not supported on SVLANs and SVLAN ports in QinQ mixed VLAN mode

If number of snooped VLAN count is greater than max_vlans_with_dipv6ld and also the max binding limit has reached.

DHCPv6 snooping cannot be enabled on %s VLANs. The switch will support only 8 DHCPv6 snooping enabled VLANs when Dynamic IPv6 Lockdown feature is enabled.

If the VLAN which is being configured for DHCPv6 Snooping has a Smart Link enabled port.

Cannot configure DHCPv6 Snooping on a VLAN containing Smart Link ports.

If a VLAN is being configured as a Smart Link protected VLAN and DHCPv6 Snooping is enabled on it.

Cannot configure a VLAN as a protected VLAN when DHCPv6 Snooping is enabled on it .

If Smart Link is being configured on a port which is a part of DHCPv6 Snooping VLAN..

Cannot configure the Smart Link feature on a port when DHCPv6 Snooping is enabled on that port.