ZyXEL Communications GS2200 Series, Руководство пользователя

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Chapter 9 VLAN
GS2200 Series User’s Guide
79
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 49
Port VLAN Trunking
9.1.2.3 Select the VLAN Type
Select a VLAN type in the Basic Setting > Switch Setup screen.
Figure 50
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 16
IEEE 802.1Q VLAN Terminology (continued)
VLAN PARAMETER TERM DESCRIPTION