3Com 4210 PWR Configuration Manual

Also see for Switch 4210 9-Port: Getting started Getting started Datasheet Configuration guide

Contents

STP Overview 143The following is an example of how the STP algorithm works. The specificnetwork diagram is shown in Figure 47. The priority of Device A is 0, thepriority of Device B is 1, the priority of Device C is 2, and the path costs of theselinks are 5, 10 and 4 respectively.Figure 47 Network diagram for STP algorithm■ Initial state of each deviceThe following table shows the initial state of each device.■ Comparison process and result on each deviceThe following table shows the comparison process and result on each device.Table 98 Initial state of each deviceDevice Port name BPDU of portDevice A AP1 {0, 0, 0, AP1}AP2 {0, 0, 0, AP2}Device B BP1 {1, 0, 1, BP1}BP2 {1, 0, 1, BP2}Device C CP1 {2, 0, 2, CP1}CP2 {2, 0, 2, CP2}AP 1 AP 2Device AWith priority 0Device BDevice CBP 1BP 2CP 1CP 25 104With priority 1With priority 2