D-Link DES-3326S - Switch - Stackable Uživatelská příručka stáhnout pdf (Strana 60)

100

101

DES-3326S Layer 3 Fast Ethernet Switch User’s Guide

60 Switch Management and Operating Concepts

Bridge Identifier

(Not user-

configurable

except by setting

priority below)

A combination of the User-

set priority and the switch’s

MAC address. The Bridge

Identifier consists of two

parts: a 16-bit priority and

a 48-bit Ethernet MAC

address

32768 + MAC

Priority A relative priority for each

switch – lower numbers give

a higher priority and a

greater chance of a given

switch being elected as the

root bridge

32768

Hello Time The length of time between

broadcasts of the hello

message by the switch

2 seconds

Maximum Age

Timer

Measures the age of a

received BPDU for a port

and ensures that the BPDU

is discarded when its age

exceeds the value of the

maximum age timer.

20 seconds

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

Table 5-4. STP Parameters – Switch Level

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

her

riorit

and a

reater

128

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 348 349

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