Chapter 9 VLAN
XGS1930 Series User’s Guide
108
9.1.2.2 Port VLAN Trunking
Enable
VLAN Trunking
on a port to allow frames belonging to unknown VLAN groups to pass through
that port. This is useful if you want to set up VLAN groups on end devices without having to configure the
same VLAN groups on intermediary devices.
Refer to the following figure. Suppose you want to create VLAN groups 1 and 2 (V1 and V2) on devices
A and B. Without
VLAN Trunking
, you must configure VLAN groups 1 and 2 on all intermediary switches C,
D and E; otherwise they will drop frames with unknown VLAN group tags. However, with
VLAN Trunking
enabled on a port(s) in each intermediary switch you only need to create VLAN groups in the end
devices (A and B). C, D and E automatically allow frames with VLAN group tags 1 and 2 (VLAN groups
that are unknown to those switches) to pass through their VLAN trunking port(s).
Figure 81
Port VLAN Trunking
9.1.2.3 Select the VLAN Type
Select a VLAN type in the
Basic Setting
>
Switch Setup
screen.
Figure 82
Switch Setup > Select VLAN Type
VLAN Administrative
Control
Registration Fixed
Fixed registration ports are permanent VLAN members.
Registration
Forbidden
Ports with registration forbidden are forbidden to join the specified
VLAN.
Normal Registration
Ports dynamically join a VLAN using GVRP.
VLAN Tag Control
Tagged
Ports belonging to the specified VLAN tag all outgoing frames
transmitted.
Untagged Ports
belonging
to the specified VLAN don't tag all outgoing frames
transmitted.
VLAN Port
Port VID
This is the VLAN ID assigned to untagged frames that this port
received.
Acceptable Frame
Type
You may choose to accept both tagged and untagged incoming
frames, just tagged incoming frames or just untagged incoming
frames on a port.
Ingress filtering
If set, the Switch discards incoming frames for VLANs that do not
have this port as a member
Table 46 IEEE 802.1Q VLAN Terminology (continued)
VLAN PARAMETER
TERM
DESCRIPTION
