D-Link DGS-3630-28SC [187/742] Mst configuration identification

DGS-3630 Series Layer 3 Stackable Managed Switch Web UI Reference Guide

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Parameter Description

TCN Filter

Select to enable or disable the TCN Filter option. When a port is set to the TCN

filter mode, the TC event received by the port will be ignored. By default, this

option is Disabled.

BPDU Forward

Select to enable or disable BPDU forwarding. If enabled, the received STP BPDU

will be forwarded to all VLAN member ports in the untagged form. By default, this

option is Disabled.

Priority

Select the priority value here. Options to choose from are 0 to 240. By default this

option is 0. A lower value has higher priority.

Hello Time

Enter the hello time value here. This value must be between 1 and 2 seconds.

This value specifies the interval that a designated port will wait between the

periodic transmissions of each configuration message.

Loop Guard

Select to enable or disable the Loop Guard feature on the specified port(s) here.

The STP Loop Guard feature provides additional protection against Layer 2

forwarding loops (STP loops). An STP loop is created when an STP blocking port

in a redundant topology erroneously transitions to the Forwarding state. This

usually happens because one of the ports in a physically redundant topology (not

necessarily the STP blocking port) no longer receives STP BPDUs. In its

operation, STP relies on continuous reception or transmission of BPDUs based

on the port role. The designated port transmits BPDUs, and the non-designated

port receives BPDUs.

When one of the ports in a physically redundant topology no longer receives

BPDUs, the STP considers the topology to be loop free. Eventually, an alternate

port that was previously a Blocking or Backup port becomes Designated and

moves to a Forwarding state. This situation creates a loop.

Click the Apply button to accept the changes made.

MST Configuration Identification

This window is used to display and configure the MST configuration identification settings. These settings will uniquely

identify an MSTI configured on the Switch. The Switch initially possesses one Common Internal Spanning Tree (CIST)

of which the user may modify the parameters for but cannot change or delete the MSTI ID.