Allied Telesis AT-9000 Series User Manual

Chapter 42: STP, RSTP and MSTP Protocols
652
Figure 124. Loop Guard Example 5
Switch 3
Switch 1
Old root bridge
RSTP stops operating
Port 4
Loop guard changes the
port to the blocking state
from the forwarding state
Switch 2
New root bridge
Port 14
Transitions from the blocking state
to the forwarding state

Allied Telesis AT-9000 Series Specifications

General

Brand	Allied Telesis
Model	AT-9000 Series
Category	Switch
Language	English