show vlan lists the Vlans and the ports on which each is configured.
Trunk ports don't show up in this list.
Vlans 1002, 1003, 1004 and 1005
In the output of the
show vlan command, Vlans 1002, 1003, 1004 and
1005 are listed. Those exist by default to ensure interoperation and
backwards compatibility of new devices with old and largely deprecated
networks. For example, Vlans 1002 and 1004 were used on an old fiber
optics type of network, whereas Vlan 1003 was used in token-ring
networks. In the
status column, those networks show up as either
active/unsupported, since most new switches don't even
have ports to use on those old types of networks any more.