The port VLAN ID advertises the untagged
VLAN on that port. Thus, only one port VLAN ID TLV can exist in the LLDPDU. If you configure
this TLV and there is no untagged VLAN on the specified port, this TLV is not included in
the LLDPDU.
To control advertisement of the port VLAN ID TLV, use the
following command: