Netgear XSM4324FS User Manual - Page 221

M4300 Intelligent Edge Series Fully Managed Stackable Switches Table 76. STP Advanced CST Configuration Field Forward Delay(secs) Hold Time(secs) CST Regional Root CST Path Cost Description Derived value of the Root Port Bridge Forward Delay parameter. Minimum time between transmission of Configuration BPDUs. Priority and base MAC address of the CST Regional Root. Path Cost to the CST tree Regional Root. Configure CST Port Settings You can configure the Common Spanning Tree (CST) and Internal Spanning Tree on a specific port on the switch. A port can become Diagnostically Disabled (D-Disable) when DOT1S experiences a severe error condition. The most common cause is when the DOT1S software experiences BPDU flooding. The flooding criteria is such that DOT1S receives more than 15 BPDUs in a 3-second interval. The other causes for DOT1S D-Disable are extremely rare. To configure CST port settings: 1. Launch a web browser. 2. In the address field of your web browser, enter the IP address of the switch. The login window opens. 3. Enter admin as the user name, enter your local device password, and click the Login button. The first time that you log in, no password is required. However, you then must specify a local device password to use each subsequent time that you log in. The System Information page displays. 4. Select Switching > STP > Advanced > CST Port Configuration. 5. Select an interface. You can select a physical or port channel interface associated with VLANs associated with the CST. 6. Use Port Priority to specify the priority for a particular port within the CST. Configure Switching Information 221 User Manual