Peter Stuge wrote:
Jan Just Keijser wrote:
FYI: 802.1Q defines VLAN 1 as the 'native' LAN: all packets on VLAN 1
are *by definition* not encapsulated (according to my CCNA guide ;-))
802.1Q != CCNA..
Look at the spec, Table 9-2 on page 86. (100 in PDF)
VID Use
0 "no VLAN identifier is present in the frame"
1 "The default PVID value used for classifying frames on ingress ..
The PVID value of a Port can be changed by management."
FFF "Reserved for implementation use."
be careful here (from table 9.2; I actually have an older copy of the
802.1Q spec):
The null VLAN ID. Indicates that the tag header contains only priority
information; no VLAN identifier is present in the frame. This VID value
shall not
be configured as a PVID or a member of a VID Set, or configured in any
Filtering
Database entry, or used in any Management operation.
so it *does* have priority info in it and it is *not* the same as no
VLAN identifier ...
cheers,
JJK
