Cst Port Configuration - NETGEAR S3300 User Manual

The following MSTP status information is displayed on the Spanning Tree CST Configuration
screen.
Table 51. MSTP status information
Field
MST ID
VID
FID

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.
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 > STP > Advanced > CST Port
Configuration. A screen similar to the following is displayed.
Figure 87. CST Port Configuration

To configure CST port settings:
1. To configure CST settings for a physical port, enter the interface and click the Go button
to select that particular interface.
2. Select the interfaces for which you want to configure the CST settings.
For information about how to select and configure one or more ports or LAGs, see
Configuring Interface Settings
3. Configure the CST values for the selected port(s) or LAG(s):
S3300 Smart Managed Pro Switch
Description
Table consisting of the MST instances (including the CST) and the
corresponding VLAN IDs associated with each of them.
Table consisting of the VLAN IDs and the corresponding FID associated with
each of them
Table consisting of the FIDs and the corresponding VLAN IDs associated with
each of them.
on page 32.
Configuring Switching
161