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xStack® DGS-3620 Series Managed Switch Web UI Reference Guide
Layer 2 Protocol Tunneling Settings
This window is used to configure the layer 2 Protocol tunneling port settings.
To view the following window, click L2 Features > Layer 2 Protocol Tunneling Settings, as show below:
The fields that can be configured are described below:
Parameter
Layer 2 protocol
tunneling State
Unit
From Port / To Port
Type
Tunneled Protocol
Threshold (0-65535)
Click the Apply button to accept the changes made for each individual section.
Spanning Tree
This Switch supports three versions of the Spanning Tree Protocol: 802.1D-1998 STP, 802.1D-2004 Rapid STP,
and 802.1Q-2005 MSTP. 802.1D-1998 STP will be familiar to most networking professionals. However, since
802.1D-2004 RSTP and 802.1Q-2005 MSTP have been recently introduced to D-Link managed Ethernet switches,
a brief introduction to the technology is provided below followed by a description of how to set up 802.1D-1998 STP,
802.1D-2004 RSTP, and 802.1Q-2005 MSTP.
802.1Q-2005 MSTP
Multiple Spanning Tree Protocol, or MSTP, is a standard defined by the IEEE community that allows multiple
VLANs to be mapped to a single spanning tree instance, which will provide multiple pathways across the network.
Therefore, these MSTP configurations will balance the traffic load, preventing wide scale disruptions when a single
spanning tree instance fails. This will allow for faster convergences of new topologies for the failed instance.
Figure 4-35 Layer 2 Protocol Tunneling Settings window
Description
Use the radio buttons to enable or disable the layer 2 protocol tunneling function
globally on the Switch.
Select the unit you want to configure.
Select a range of ports to use in the configuration.
Use the drop-down menu to select the type of the ports. Available choices are UNI, NNI
and None. The default type is None.
When UNI is selected in the Type drop-down menu, this drop-down menu shows the
following options:
STP- Specify the BPDU received on these UNI will be tunneled.
GVRP - Specify the GVRP PDU received on these UNI will be tunneled.
Protocol MAC - Specify the destination MAC address of the L2 protocol packets that will
tunneled on these UNI ports. At present, the MAC address can be 01-00-0C-CC-CC-CC
or 01-00-0C-CC-CC-CD.
All - Specify all supported.
Enter the drop threshold for packets-per-second accepted on this UNI port. The port
drops the PDU if the protocol's threshold is exceeded. The range of the threshold value
is 0 to 65535 (packet/second). The value 0 means unlimited. By default, the value is 0.
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