Allied Telesis AT-S82 - Manual (Page 63)

AT-S82 Management Software User’s Guide
63
Point-to-Point and Edge Ports
Note
This section applies only to RSTP.
Part of the task of configuring RSTP is defining the port types on the
bridge. This relates to the device(s) connected to the port. With the port
types defined, RSTP can reconfigure a network much quicker than STP
when a change in network topology is detected.
There are two possible selections:
ˆ Point-to-point port
ˆ Edge port
If a bridge port is operating in full-duplex mode, than the port is functioning
as a point-to-point port. Figure 24 illustrates two AT-GS950/8 WebSmart
switches that have been connected with one data link. With the link
operating in full-duplex, the ports are point-to-point ports.
Figure 24. Point-to-Point Ports
If a port is operating in half-duplex mode and is not connected to any
further bridges participating in STP or RSTP, then the port is an edge port.
Figure 25 illustrates an edge port on an AT-GS950/8 WebSmart switch.
The port is connected to an Ethernet hub, which in turn is connected to a
series of Ethernet workstations. This is an edge port because it is
connected to a device operating at half-duplex mode and there are no
participating STP or RSTP devices connected to it.
912
912
Point-to-Point Ports
(Full-duplex Mode)