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GS752TP, GS728TP, and GS728TPP Gigabit Smart Switches
CST Port Configuration
Use the CST Port Configuration screen to configure Common Spanning Tree (CST) and
Internal Spanning Tree on a specific port on the switch.
To configure CST port settings:
1. Select Switching STP Advanced CST Port Configuration.
The following screen displays:
2. To configure CST settings for an interface, click PORTS, LAGS, or All.
3. Select the check box next to the port or LAG to configure.
You can select multiple ports and LAGs to apply the same settings to the selected
interfaces. Select the check box in the heading row to apply the same settings to all
interfaces.
4. Configure the CST values for the selected ports or LAGs:
•STP Status. Enable or disable the Spanning Tree Protocol administrative mode
associated with the port or port channel.
•Fast Link. Specifies if the specified port is an edge port with the CST. Possible values
are Auto, Enable, or Disable. The default is Auto, which specifies that the software
waits for 3 seconds (with no BPDUs received on the interface) before putting the
interface into the PortFast mode.
•BPDU Forwarding. Specifies whether spanning tree BPDUs should be forwarded
while spanning-tree is disabled on the switch. Select Enable or Disable.
•Port State. The forwarding state of this port. This field is read-only.