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TigerSwitch 10/100/1000 - SMC

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CONFIGURING THE SWITCH<br />

2-44<br />

To implement GVRP in a network, you must first configure the static<br />

VLANs required on switches that are connected to PCs, servers, and other<br />

devices, so that these VLANs can be propagated across the network<br />

(Web - VLAN / VLAN Membership). For other core switches in the<br />

network, enable GVRP on the links between these devices<br />

(Web - VLAN / Port Settings or Trunk Settings). You should also<br />

determine security boundaries in the network and disable GVRP on ports<br />

to prevent advertisements being propagated, or forbid ports from joining<br />

restricted VLANs.<br />

Forwarding Tagged/Untagged Frames<br />

If you want to create a small port-based VLAN for devices attached<br />

directly to a single switch, you can assign ports to the same untagged<br />

VLAN. However, to participate in a VLAN group that crosses several<br />

switches, you need to create a VLAN for that group and enable tagging on<br />

all ports.<br />

Ports can be assigned to multiple tagged or untagged VLANs. Each port<br />

on the switch is therefore capable of passing tagged or untagged frames.<br />

To forward a frame from a VLAN-aware device to a VLAN-unaware<br />

device, the switch first decides where to forward the frame, and then strips<br />

off the VLAN tag. However, to forward a frame from a VLAN-unaware<br />

device to a VLAN-aware device, the switch first decides where to forward<br />

the frame, and then inserts a VLAN tag reflecting this port’s default VID.<br />

Displaying Basic VLAN Information<br />

Command Attributes<br />

• VLAN Version Number – The VLAN version used by this switch as<br />

specified in the IEEE 802.1Q standard. (Web interface only.)<br />

• Maximum VLAN ID – Maximum VLAN ID recognized by this<br />

switch.

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