FS728TP Smart Switch Software Administration Manual
Configuring Switching Settings 4-27
v1.1, September 2009
• BPDU Handling – Determines how the Bridge Protocol Data Unit (BPDU) packets are
managed when STP is disabled on the port or device. BPDUs are used to transmit
spanning tree information. The possible field values are:
• Filtering – Filters BPDU packets when Spannin g Tree is disabled on an interface or
globally on the device. Filtering is used when a bridge interconnects two regions and
there is a need to have a separate spanning tree for each region. Filtering the BPDU in
the bridge connecting the two regions will serve this purpose.
• Flooding – Floods BPDU packets when Spanning Tree is disabled on an interface or
globally on the device. This is the default value.
• Bridging – Forwards BPDU packets (subject to ingress and egress VLAN rules) when
Spanning Tree is disabled on an interface or globally on the device.
Status
•Bridge Identifier – Displays the Bridge priority and MAC address.
•Time Since Topology Change – Displays the amount of time that has elapsed since the
bridge was initialized or reset or the last topology change that occurred. The time is
displayed in a day-hour-minute format, such as 2 days 5 hours and 10 minutes.
•Designated Root – Displays the Root Bridge priority and MAC address.
•Root Port – Displays the port number that offers the lowest cost path from this bridge to
the Root Bridge. This field is significant when the bridge is not the Root Bridge.
•Max Age (Sec) – Displays the device Maximum Age Time. The Maximum Age Time is
the amount of time in seconds a bridge waits before sending configuration messages. The
default Maximum Age Time is 20 seconds.
•Forward Delay (Sec) – Displays the device Forward Delay Time. The Forward Delay
Time is the amount of time in seconds a bridge remains in a listening and learning state
before forwarding pac kets. The default is 15 seconds.
•Hello Time (Sec) – Displays the device Hello T ime. The Hello Time indicates the amount
of time in seconds a Root Bridge waits between configuration messages. The default is 2
seconds.
•CST Regional Root – Displays the Common STP regional bridge priority and MAC
address.
2. Select Enable or Disable in the Spanning Tree State provided field.
3. Select the STP Operation Mode in the provided field.