The 802.1Q/1P Group Setting Screen - ZyXEL Communications P-660H-61 User Manual

Chapter 15 802.1Q/1P
PVC
A virtual circuit is a logical point-to-point circuit between customer sites. Permanent means that the
circuit is preprogrammed by the carrier as a path through the network. It does not need to be set
up or torn down for each session.
Forwarding Tagged and Untagged Frames
Each port on the device is capable of passing tagged or untagged frames. To forward a frame from
an 802.1Q VLAN-aware device to an 802.1Q VLAN-unaware device, the ZyXEL Device first decides
where to forward the frame and then strips off the VLAN tag. To forward a frame from an 802.1Q
VLAN-unaware device to an 802.1Q VLAN-aware switch, the ZyXEL Device first decides where to
forward the frame, and then inserts a VLAN tag reflecting the ingress port's default VID. The default
PVID is VLAN 1 for all ports, but this can be changed.
Whether to tag an outgoing frame depends on the setting of the egress port on a per-VLAN, per-
port basis (recall that a port can belong to multiple VLANs). If the tagging on the egress port is
enabled for the VID of a frame, then the frame is transmitted as a tagged frame; otherwise, it is
transmitted as an untagged frame.

15.2 The 802.1Q/1P Group Setting Screen

Use this screen to activate 802.1Q/1P and display the VLAN groups. Click Advanced > 802.1Q/1P
to display the following screen.
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ADSL Router Series User's Guide