C
ONFIGURING
THE
S
WITCH
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To implement GVRP in a network, you must first configure the static
VLANs required on switches that are connected to PCs, servers, and other
devices, so that these VLANs can be propagated across the network
(Web - VLAN / VLAN Membership). For other core switches in the
network, enable GVRP on the links between these devices
(Web - VLAN / Port Settings or Trunk Settings). You should also
determine security boundaries in the network and disable GVRP on ports
to prevent advertisements being propagated, or forbid ports from joining
restricted VLANs.
Forwarding Tagged/Untagged Frames
If you want to create a small port-based VLAN for devices attached
directly to a single switch, you can assign ports to the same untagged
VLAN. However, to participate in a VLAN group that crosses several
switches, you need to create a VLAN for that group and enable tagging on
all ports.
Ports can be assigned to multiple tagged or untagged VLANs. Each port
on the switch is therefore capable of passing tagged or untagged frames.
To forward a frame from a VLAN-aware device to a VLAN-unaware
device, the switch first decides where to forward the frame, and then strips
off the VLAN tag. However, to forward a frame from a VLAN-unaware
device to a VLAN-aware device, the switch first decides where to forward
the frame, and then inserts a VLAN tag reflecting this port’s default VID.
Displaying Basic VLAN Information
Command Attributes
• VLAN Version Number – The VLAN version used by this switch
as specified in the IEEE 802.1Q standard. (Web interface only.)
• Maximum VLAN ID – Maximum VLAN ID recognized by this
switch.
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