Chapter 3: Configuration
Parameter Description
•MSTI: The bridge instance. The CIST is the default instance, always active.
•Priority: Controls the bridge priority. Lower numeric values have better priority. The bridge priority plus the MSTI instance number, concatenated with the
•Buttons:
-Save: Click to save changes.
-Reset: Click to undo any changes made locally and revert to previously saved values.
3.4.4 CIST Ports
When you implement a Spanning Tree protocol on the switch, that is a bridge instance. You need to configure the CIST Ports. This section describes how it enables the user to inspect the current STP CIST port configurations and change them if needed.
Web Interface
To configure the Spanning Tree CIST Ports parameters in the Web interface:
1.Click Configuration, Spanning Tree, CIST Ports.
2.Scroll and evoke to set all parameters of CIST Aggregated Port Configuration.
3.Evoke to enable or disable the STP, then scoll and evoke to set all parameters of the CIST normal Port configuration.
4.Click the Save button to save the setting.
5.To cancel the setting, click the Reset button to revert to previously saved values.
Figure 3-21. The STP CIST Port Configuration screen.
Parameter Description
•Port: The switch port number of the logical STP port.
•STP Enabled: Controls whether STP is enabled on this switch port.
•Path Cost: Controls the path cost incurred by the port. The Auto setting will set the path cost as appropriate by the physical link speed, using the 802.1D recommended values. Using the Specific setting, a user-defined value can be entered. The path cost is used when establishing the active topology of the network. Lower path cost ports are chosen as forwarding ports in favor of higher path cost ports. Valid values are in the range 1 to 200000000.
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