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•
You can use a nonexistent VLAN as the PVID for a hybrid or trunk port but not for an access port.
After you use the
undo vlan
command to remove the VLAN that an access port resides in, the PVID
of the port changes to VLAN 1. The removal of the VLAN specified as the PVID of a trunk or hybrid
port, however, does not affect the PVID setting on the port.
When you configure a PVID, follow these guidelines:
•
Do not set the voice VLAN as the PVID of a port in automatic voice VLAN assignment mode. For
information about voice VLAN, see "
."
•
H3C recommends that you set the same PVID ID for local and remote ports.
•
Make sure that a port permits the traffic from its PVID to pass through. Otherwise, when the port
receives frames tagged with the PVID or untagged frames, the port drops these frames.
The following table shows how ports of different link types handle frames:
Port type
Actions (in the inbound direction)
Actions (in the outbound
direction)
Untagged frame
Tagged frame
Access
Tags the frame with the
PVID tag.
•
Receives the frame if its
VLAN ID is the same as the
PVID.
•
Drops the frame if its VLAN
ID is different from the
PVID.
Removes the VLAN tag and
sends the frame.
Trunk
Checks whether the PVID
is permitted on the port:
•
If yes, tags the frame
with the PVID tag.
•
If not, drops the
frame.
•
Receives the frame if its
VLAN is carried on the
port.
•
Drops the frame if its VLAN
is not carried on the port.
•
Removes the tag and send
the frame if the frame carries
the PVID tag and the port
belongs to the PVID.
•
Sends the frame without
removing the tag if its VLAN
is carried on the port but is
different from the PVID.
Hybrid
Sends the frame if its VLAN is
carried on the port. The frame is
sent with the VLAN tag removed
or intact depending on your
configuration via the
port hybrid
vlan
command. This is true of the
PVID.
Assigning an access port to a VLAN
You can assign an access port to a VLAN in VLAN view, interface view (including Layer 2 Ethernet
interface view, and Layer 2 aggregate interface view), or port group view.
To assign one or multiple access ports to a VLAN in VLAN view:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter VLAN view.
vlan
vlan-id
If the specified VLAN does not exist, this
command creates the VLAN first.
