How fast device feature of BACRouter improves MSTP token pass rate?

The test criterion is: 115.2kbps, 80m cable. 1 router and 10 mstp master devices, max_master=127, no NPDU traffic on bus, define non used mac as fast device.

Router mac

Fast device timeout config

Other device’s mac

Token pass rate(round/min)

Percentage Base no fast

127

—-

117~126

2301

100%

127

0ms

117~126

4856

211%

127

1ms

117~126

4734

206%

127

2ms

117~126

4473

194%

116

0ms

117~126

4690

204%

116

1ms

117~126

4577

199%

116

2ms

117~126

4343

189%

58

—-

117~126

1777

100%

58

0ms

117~126

4563

257%

58

1ms

117~126

4405

248%

58

2ms

117~126

4071

229%

110

—-

0,11,22,33,44,55,66,77,88,99

1153

100%

110

0ms

0,11,22,33,44,55,66,77,88,99

4037

350%

110

1ms

0,11,22,33,44,55,66,77,88,99

3813

331%

110

2ms

0,11,22,33,44,55,66,77,88,99

3393

294%