vlan-ы на cisco и аналогах

В частности, у EdgeCore и Huawei подобный синтаксис

interface FastEthernet0/11 
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 34
  switchport mode trunk

switch#(enable) clear trunk 3/28  1-33,37-333,335,337-1005
switch#(enable) set trunk 3/28 on dot1q 34-36,334,336

The first command disallows some VLANs, the second one allows specific VLANs.

The command
show trunk
can be used to control the trunk state.

http://people.freebsd.org/~arved/vlan/vlan_en.html