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DES-3010F/DES-3010FL/DES-3010G/DES-3016/DES-3018/DES-3026 Fast Ethernet Switch Manual
102
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, all ports operating in full-duplex mode are considered to be P2P ports, unless manually overridden
through configuration.
802.1D and 802.1w Compatibility
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 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.
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
To open the following window, click L2 features > Spanning Tree > STP Bridge Global Settings