User Manual

AT-S63 Management Software Web Browser User’s Guide
Section IV: Spanning Tree Protocols 201
6. After configuring the parameters, click the Apply button.
7. To save your changes in he master configuration file, click the Save
Config button in the Configuration menu.
Port Cost Specifies the port cost. The spanning tree
algorithm uses the cost parameter to
decide which port provides the lowest cost
path to the root bridge for that LAN. The
range is 0 to 20,000,000. The default
setting is Automatic detect, which sets
port cost depending on the speed of the
port. Default values are 2,000,000 for 10
Mbps ports, 200,000 for a 100 Mbps
ports, and 20,000 for one gigabit ports.
Enable Migration Check Resets an RSTP port, allowing it to send
RSTP BPDUs. When an RSTP bridge
receives STP BPDUs on an RSTP port,
the port transmits STP BPDUs. The RSTP
port continues to transmit STP BPDUs
indefinitely. Type C to reset the MSTP port
to transmit RSTP BPDUs. This parameter
is displayed only when RSTP is enabled.
Point-to-Point Specifies whether the port is functioning
as a point-to-point port. The possible
settings are Yes, No, and Auto-Detect.
For an explanation of this parameter, refer
to “Point-to-Point and Edge Ports” in
Chapter 22, “Spanning Tree and Rapid
Spanning Tree Protocols” in the AT-S63
Management Software Features Guide.
Edge Port Specifies whether the port is functioning
as an edge port. The possible settings are
Yes and No. For an explanation of this
parameter, refer to “Point-to-Point and
Edge Ports” in Chapter 22, “Spanning
Tree and Rapid Spanning Tree Protocols”
in the AT-S63 Management Software
Features Guide.
Table 36. RSTP Port Parameters
Parameter Definition