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Stp system configuration – Interlogix NS2503-24P/2C User Manual User Manual

Page 105

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NS2503-24P/2C User Manual

105

The following are the user-configurable STP parameters for the port or port group level:

Variable

Description

Default Value

Port Priority

A relative priority for each
port –lower numbers give a higher priority
and a greater chance of a given port being
elected as the root port.

128

Port Cost

A value used by STP to evaluate paths –
STP calculates path costs and selects the
path with the minimum cost as the active
path.

200,000-100Mbps Fast Ethernet ports
20,000-1000Mbps Gigabit Ethernet ports
0 - Auto

Default Spanning-Tree Configuration

Feature

Default Value

Enable state

STP disabled for all ports

Port priority

128

Port cost

0

Bridge Priority

32,768

The Hello Time cannot be longer than the Max. Age. Otherwise, a configuration error will
occur.

Observe the following formulas when setting the above parameters:

Max. Age _ 2 x (Forward Delay - 1 second)
Max. Age _ 2 x (Hello Time + 1 second)


STP System Configuration

This section provides STP-System Configuration from the Managed Switch, the screen in

Figure 4-8-4

appears.

The user can view spanning tree information of Root Bridge.

The user can modify STP state. After modification, click

Apply

.