S350 Series 24-Port (PoE+) and 48-Port Gigabit Ethernet Smart Managed Pro Switches
Configure Switching User Manual148
8. To refresh the page with the latest information about the switch, click the Refresh button.
The following table describes the MSTP Status information that is displayed.
Table 34. STP advanced CST configuration, MSTP status
Field Description
MST ID The MST instances (including the CST) and the corresponding VLAN IDs associated with each
of them.
VID ID The VLAN IDs and the corresponding FID associated with each of them.
FID ID The FIDs and the corresponding VLAN IDs associated with each of them.
Configure and View the CST Port Settings
You can configure a 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 are such that DOT1S receives more than 15 BPDUs in a
3-second interval. The other causes for DOT1S D-Disable are very rare.
To configure and view the CST port settings:
1. Connect your computer to the same network as the switch.
You can use a WiFi or wired connection to connect your computer to the network, or
connect directly to a switch that is off-network using an Ethernet cable.
2. Launch a web browser.
3. In the address field of your web browser, enter the IP address of the switch.
If you do not know the IP address of the switch, see
Discover or Change the Switch IP
Address on page 12.
The login window opens.
4. Enter the switch’s password in the Password field.
The default password is
password.
The System Information page displays.
5. Select Switching > STP >
Advanced > CST Port Configuration.