Point-to-point and edge ports, Figure 41: point-to-point ports, Point-to-point port – Allied Telesis AT-S101 User Manual
Page 139: Point-to-point ports (full-duplex mode)
AT-S101 Management Software User’s Guide
139
seconds and the default is two seconds. Consequently, if the AT-GS950/
8POE switch is selected as the root bridge of a spanning tree domain, it
transmits a BPDU every two seconds.
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:
Point-to-point port
Edge port
If a bridge port is operating in full-duplex mode, than the port is functioning
as a point-to-point port. Figure 41 illustrates two AT-GS950/8POE
switches that are connected with one data link. With the link operating in
full-duplex, the ports are point-to-point ports.
Figure 41. 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 42 on page 140 illustrates an edge port on an AT-GS950/8POE
AT-GS950/8POE
8 Port 10/100/1000Mbps + 2 SFP Combo WebSmart Switch
SFP
SFP
CLASS 1
LASER PRODUCT
1
2
3
4
5
6
7R
7
8
8R
POWER
RESET
1
2
3
4
5
6
7R
8R
7
8
POE
100/1000Base-X
PORT ACTIVITY
ACT
1000 LINK
100 LINK
ACT
ACT
SFP
1366
AT-GS950/8POE
8 Port 10/100/1000Mbps + 2 SFP Combo WebSmart Switch
SFP
SFP
CLASS 1
LASER PRODUCT
1
2
3
4
5
6
7R
7
8
8R
POWER
RESET
1
2
3
4
5
6
7R
8R
7
8
POE
100/1000Base-X
PORT ACTIVITY
ACT
1000 LINK
100 LINK
ACT
ACT
SFP
Point-to-Point Ports
(Full-duplex Mode)