DGS-3700-12/DGS-3700-12G Series Layer 2 Gigabit Ethernet User Manual
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Edge Port
The edge port is a configurable designation used for a port that is directly connected to a segment where a loop
cannot be created. An example would be a port connected directly to a single workstation. Ports that are designated
as edge ports transition to a forwarding state immediately without going through the listening and learning states. An
edge port loses its status if it receives a BPDU packet, immediately becoming a normal spanning tree port.
P2P Port
A P2P port is also capable of rapid transition. P2P ports may be used to connect to other bridges. Under RSTP/MSTP,
all ports operating in full-duplex mode are considered to be P2P ports, unless manually overridden through
configuration.
802.1D/802.1w/802.1s Compatibility
MSTP or RSTP can interoperate with legacy equipment and is capable of automatically adjusting BPDU packets to
802.1D format when necessary. However, any segment using 802.1D STP will not benefit from the rapid transition
and rapid topology change detection of MSTP or RSTP. The protocol also provides for a variable used for migration in
the event that legacy equipment on a segment is updated to use RSTP or MSTP.
The Spanning Tree Protocol (STP) operates on two levels:
1. On the switch level, the settings are globally implemented.
2. On the port level, the settings are implemented on a per user-defined group of ports basis.
STP Bridge Global Settings
This window is used to enable and configure the STP bridge global settings on the Switch.
To view this window, click
L2 Features > Spanning Tree > STP Bridge Global Settings
,
as shown below:
Figure 4- 28 STP Bridge Global Settings window
The following parameters can be set:
Parameter Description
STP State
Use the radio buttons to enable or disable the STP Status.
