Wavetronix Click 342 (lean managed ethernet switch) (CLK-342) Bedienungsanleitung PDF herunterladen (Seite 66)

CHAPTER 6  RAPID SPANNING TREE 65

Conﬁguration Notes for Rapid Spanning Tree

In contrast to the Spanning Tree method, the Rapid Spanning Tree method supports event-

controlled actions that are no longer triggered based on a timer.

If one cable fails (link down), the Rapid Spanning Tree method can respond more quickly

to this failure and thus the switch-over time can be kept low.

A link down or link up must be detected at the switch so that the RSTP switches can detect

a line failure and a restored line more quickly. Please take into consideration, in particular,

paths where media converters are used. If required, media converters oer setting options

to transmit the link status of the ber optic side to the twisted pair side.

Note

If a link down is not detected at the switch, due to the cable interrupt between the

media converters, and if no link down is forced at the switch, timer-based detection

is activate, which may result in longer switch-over times.

Below is a list of network suggestions:

 For short switch-over times, structure your network in such a way that a maximum of

seven switches are located in a cascade up to the root switch. e switch-over times can

range from 2 to 8 seconds.

 Use priority assignment to specify a central switch as the root.

 It is also recommended to assign a switch as the back-up root.

 For short switch-over times, all switches should support the Rapid Spanning Tree Pro-

tocol.

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Wavetronix Click 342 (lean managed ethernet switch) (CLK-342) Bedienungsanleitung Seite 66