Allied Telesis AT-S62 - Manual (Page 490)

Chapter 22: Spanning Tree and Rapid Spanning Tree Protocols
490 Section IV: Spanning Tree Protocols
If a bridge port is operating in full-duplex mode, than the port is functioning
as a point-to-point port. Figure 159 illustrates two AT-8524M switches that
have been connected with one data link. With the link operating in full-
duplex, the ports are point-to-point ports.
Figure 159. 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 160 illustrates an edge port on an AT-8524M 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.
Figure 160. Edge Port
Point-to-Point Ports
(Full-duplex Mode)
LINK
MODE
LINK MODE
FAULT
RPS
MASTER
PWR
MODE STATUS
AT-8524M Fast Ethernet Switch
LINK
MODE
LINK MODE
FAULT
RPS
MASTER
PWR
MODE STATUS
AT-8524M Fast Ethernet Switch
Edge Port
5 4 3 2 1
6 7 8
LINK
MODE LINK
MODE
FAULT
RPS MASTER
PWR
MODE STATUS
AT-8524M Fast Ethernet Switch