Netgear S3300-28X-PoE+ (GS728TXP) - ProSAFE S3300 Smart Switch Series Guia Do Administrador

Spanning Tree Maximum Hops. Specify the maximum number of bridge hops the 
information for a particular CST instance can travel before being discarded. The valid 
range is 6–40

Click the Apply button.

The following MSTP status information is displayed on the Spanning Tree CST Configuration 
screen.

MST ID

Table consisting of the MST instances (including the CST) and the 
corresponding VLAN IDs associated with each of them.

VID

Table consisting of the VLAN IDs and the corresponding FID associated 
with each of them

FID

Table consisting of the FIDs and the corresponding VLAN IDs 
associated with each of them.

Use the CST Port Configuration screen to configure 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 display the CST Port Configuration screen, click Switching 

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Configuration. A screen similar to the following is displayed.

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To configure CST settings for a physical port, enter the interface and click the Go button 
to select that particular interface.

Select the interfaces for which you want to configure the CST settings.