Planet IGS-801 [74/120] Rstp system configuration

User’s Manual of IGS-801M

4.6.2 RSTP System Configuration

This page allows you to configure RSTP system settings. The settings are used by all RSTP Bridge instances in the switch.

The Managed Industrial Switch supports the following Spanning Tree protocols:

‧ Compatiable -- Spanning Tree Protocol (STP):Provides a single path between end stations, avoiding and

eliminating loops.

‧ Normal -- Rapid Spanning Tree Protocol (RSTP) : Detects and uses of network topologies that provide

faster spanning tree convergence, without creating forwarding loops.

The Managed Industrial Switch implement the Rapid Spanning Protocol as the default spanning tree

protocol. While select “Compatibles” mode, the system use the RSTP (802.1w) to compatible and

co work with another STP (802.1d)’s BPDU control packets.

This page is to enable/disable the Spanning Tree protocol and is allow configuring the spanning tree parameters.. The

Managed Industrial Switch supports IEEE 80 anning Tree (STP), IEEE 802.1w Rapid Spanning Tree (RSTP). The

screen in Figure 4-6-4 appears.

2.1d Sp

Figure 4-6-4 RSTP System Configuration

The page includes the following fields:

Object Description

• System Priority

Sp es or bridges are running STP,

each is assigned a prio . After exchanging BPDUs, the switch with the lowest

ecifies the bridge priority value. When switch

rity

priority value becomes the Root Bridge. The bridge priority value is provided in

increments of 4096 (4K increments). For example, 0, 4096, 8192, etc.

The default value is 32768.

• Hello Time

Specifies the device Hello Time. The Hello Time indicates the amount of time in

seconds a root bridge waits between configuration messages.