Spanning Tree Port Property Configuration

Use the following procedure to view STP Port Property Configuration on an existing Uplink Interface:

1. In the Application View Bar, click LAGs ().
2. In the Common Tree, select the OLT. The LAGs screen displays in the Active Application Window.
3. In the LAGs screen, select the NNI/Uplinks Interfaces tab.
4. Right-click the desired network uplink and select Protocol > Spanning Tree.
   
   
    
5. The Spanning Tree Port Property dialog is displayed, with the Configuration tab active.
    

   Figure 1: Spanning Tree Port Property Dialog - Configuration Tab
   
   
    

6. The following table describes the contents of each field. 
    

   Option	Description	Notes
   Interface AID	Displays the AID of the selected NET Uplink Interface.	Defaulted is the selected NET interface
   CIST Configuration
   Port Priority	The preference that STP gives this port relative to other ports for forwarding traffic out of the spanning tree. A higher numerical value means a lower priority; thus, the highest priority is 8.	Default 128 Possible values: 8 - 252 (configurable in increments of 4)
   Port Hello Time (secs)	The interval of time between each configuration BPDU sent by the root bridge.	Default 2 seconds Possible values: 1 - 10 seconds
   Port Path Cost	The cost of using the port to reach the root bridge. When selecting among multiple links to the root bridge, STP chooses the port with the lowest path cost and blocks the other paths. Each link type has its own default STP path cost.	Default 2000 Possible values are 0 - 65535
   Port Internal Path Cost	The configured path cost on a link connected to this port within the internal MSTP region.	Default 2000
   Admin Point-to-Point MAC	The Point-to-Point MAC checkbox that indicates the link to another switch.	Default 0
   Admin Edge Port	The Edge Port checkbox that is not expected to receive Bridge Protocol Data Unit (BPDU) on the port.	Default disabled
   Auto Edge Port	The Auto Edge Port checkbox that indicates Bridge Protocol Data Unit (BPDU) received on the port.	Default enabled
   Enable STP	The Enable STP checkbox indicates STP Bridge Protocol Data Units (BDPUs) transmitted on the interface link.	Default enabled
   Restricted TCN	The Restricted TCN checkbox indicates the count of restricted Topology Change Notices (TCNs) transmitted.	Default enabled
   Restricted Role	The Restricted Role checkbox indicates	Default disabled
   MST Configuration
   MSTI	The current MST Instance ID. This is user-selectable and affects which Multiple Spanning Tree Instance's data is shown in the MST Status group of the window.	User-defined
   ID	The current MSTI Identifier of this bridge.
   Priority	The priority assigned this MSTI ID.
   Path Cost	The path cost of this MSTI ID.

7. Configure the Spanning Tree attributes and when finished, click the Apply button, then the Close button.

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