Netgear GSM4248P User Manual - Page 231

AV Line of Fully Managed Switches M4250 Series Main User Manual Table 57. CST status information (Continued) Field Designated Root Root Path Cost Root Port Max Age (secs) Forward Delay (secs) Hold Time (secs) CST Regional Root CST Path Cost Port Triggered TC Description The bridge identifier of the root bridge, which consist of he bridge priority and the base MAC address of the bridge. The path cost to the designated root for the CST. The port through which the designated root for the CST is accessed. The period in seconds that passes before a bridge port saves its configuration BPDU information. The period in seconds that the root port bridge delays the forwarding process. This period is a derived value. The minimum period between the transmission of configuration BPDUs. The priority and base MAC address of the CST regional root. The path cost to the CST regional root. The port on which the topology change (TC) is triggered, Configure the CST interface settings You can configure a common spanning tree (CST) and internal spanning tree on a specific interface on the switch. An interface can become diagnostically disabled (D-Disable) when a severe error condition occurs for DOT1S. The most common cause is when BPDU flooding occurs. The flooding criteria are such that DOT1S receives more than 15 BPDUs in a 3-second interval. (Other causes for a DOT1S D-Disable condition are very rare.) To configure the CST interface settings: 1. Launch a web browser. 2. In the address field of your web browser, enter the IP address of the switch. The login page displays. 3. Click the Main UI Login button. The main UI login page displays in a new tab. 4. 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. Configure Switching Information 231 Main User Manual