TP-Link T1500G-8T T1500G-10PSUN V1 User Guide - Page 85

STP Config

Page 85 highlights

 Root Port: Indicates the port that has the lowest path cost from this bridge to the Root Bridge and forwards packets to the root.  Designated Port: Indicates the port that forwards packets to a downstream network segment or switch.  Master Port: Indicates the port that connects a MST region to the common root. The path from the master port to the common root is the shortest path between this MST region and the common root.  Alternate Port: Indicates the port that can be a backup port of a root or master port.  Backup Port: Indicates the port that is the backup port of a designated port.  Disabled: Indicates the port that is not participating in the STP. The following diagram shows the different port roles. Figure 7-3 Port roles The Spanning Tree module is mainly for spanning tree configuration of the switch, including four submenus: STP Config, Port Config, MSTP Instance and STP Security. 7.1 STP Config The STP Config function, for global configuration of spanning trees on the switch, can be implemented on STP Config and STP Summary pages. 7.1.1 STP Config Before configuring spanning trees, you should make clear the roles each switch plays in each spanning tree instance. Only one switch can be the root bridge in each spanning tree instance. On this page you can globally configure the spanning tree function and related parameters. Choose the menu Spanning Tree→STP Config→STP Config to load the following page. 75

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Root Port: Indicates the port that has the lowest path cost from this bridge to the Root
Bridge and forwards packets to the root.
Designated Port: Indicates the port that forwards packets to a downstream network
segment or switch.
Master Port: Indicates the port that connects a MST region to the common root. The path
from the master port to the common root is the shortest path between this MST region
and the common root.
Alternate Port: Indicates the port that can be a backup port of a root or master port.
Backup Port: Indicates the port that is the backup port of a designated port.
Disabled: Indicates the port that is not participating in the STP.
The following diagram shows the different port roles.
Figure 7-3 Port roles
The Spanning Tree module is mainly for spanning tree configuration of the switch, including
four submenus:
STP Config
,
Port Config
,
MSTP Instance
and
STP Security
.
7.1
STP Config
The STP Config function, for global configuration of spanning trees on the switch, can be
implemented on
STP Config
and
STP Summary
pages.
7.1.1
STP Config
Before configuring spanning trees, you should make clear the roles each switch plays in each
spanning tree instance. Only one switch can be the root bridge in each spanning tree instance.
On this page you can globally configure the spanning tree function and related parameters.
Choose the menu
Spanning Tree
STP Config
STP Config
to load the following page.
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