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Interlogix NS3550-8T-2S User Manual User Manual

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User’s Manual of NS3550-8T-2S

124


port and ensures that the BPDU is discarded
when its age exceeds the value of the
maximum age timer.

Forward Delay Timer


The amount time spent by a port in the
learning and listening states waiting for a
BPDU that may return the port to the
blocking state.

15 seconds


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