Chapter 7: Setting the Port Spanning Tree Protocol
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Path Cost (1-200000000)— Use this field to specify the cost of a
port to the root bridge. This cost is combined with the costs of the
other ports in the path to the root bridge, to determine the total path
cost. The lower the numeric value, the higher the priority of the
path. The range is 6 to 40.
Priority (0-15) (Actual value is multiple of 16)— Indicates a
bridge priority number for the switch. The device with the lowest
priority number in the spanning tree domain becomes the root
bridge. If two or more devices have the same priority value, the
device with the numerically lowest MAC address becomes the root
bridge.
Edge Port— Designates the edge ports on the switch. Choose
“Yes” to active an edge type or “No” to make an edge port inactive.
Edge ports are not connected to spanning tree devices or to LANs
that have spanning tree devices. As a consequence, edge ports do
not receive BPDUs. If an edge port starts to receive BPDUs, it is
no longer considered an edge port by the switch.
Link Type— Choose from the following settings:
AUTO If a port is set to full-duplex mode,
AUTO indicates the Link Type is point-
to-point. If a port is set to half-duplex
mode, AUTO indicates the Link Type is
shared.
PTP (point-to-point) Allows for rapid transition of a port to
the forwarding state during the
convergence process of the spanning
tree domain.
Shared Disables rapid transition of a port. You
may want to set thelink type to shared
if a port is connected to a hub with
multiple switches connected to it.
Loop Guard— Indicates the BPDU loop-guard feature on the
ports is enabled (ON) or disabled (OFF). If a port with the loop
guard activated stops receiving BPDU packets, the switch
automatically disables the port. A port that has been disabled by
the feature remains in that state until it begins to receive BPDU
packets again or the switch is reset. The default setting for BPDU
loop-guard on the ports is disabled.
6. Click Apply.
7. Click SAVE.