Allied Telesis AT-S101 - Manual (Page 152)

Chapter 13: Spanning Tree and Rapid Spanning Tree Protocols
152
incoming BPDUs that indicate the port should return to the
blocking state to prevent a loop.
ˆ Disabled—This state is not strictly part of STP. However, a
network administrator can manually disable a port.
Role
Indicates one of the following port roles:
ˆ Disabled—The Disabled Port role is assigned if the port is not
operational or is excluded from the active topology by
management or it is a network access port (IEEE Std 802.1X) and
it is Unauthorized, or its Administrative Bridge Port state is
Disabled.
ˆ Root— If the least cost path to the root is through this port, then it
becomes the root port for this bridge.
ˆ Designated— If this is the designated bridge for the LAN and if the
root path cost information received on this port is greater than the
root port's path cost and less than any other port's received
information, then this port becomes the designated port.
ˆ Backup— Any operational Bridge Port that is not a Root or
Designated Port is a Backup Port if the Bridge is the Designated
Bridge for the attached LAN.
ˆ Alternate— Any operational Bridge Port that is not a Root or
a Designated Port is an Alternate Port if that Bridge is not the
Designated Bridge for the attached LAN.
4. In the Admin/OperEdge column for the port you want to configure,
choose True or False to set whether or not the port will operate as an
edge port.
5. In the Admin/OperPtoP column for the port you want to configure,
choose a setting based on the information in Table 4.
6. In the Migration column for the port you want to configure, click
Restart to reset the port.
7. Click Apply.
Table 4. RSTP Point-to-Point Status
Admin Operation Port Duplex Operation
Auto True Full
False Half
True True Full or Half
False False Full or Half