Wavetronix Click 342 (lean managed ethernet switch) (CLK-342) Manuale Utente Scaricare il pdf (Pagina 57)

56 CHAPTER 6  RAPID SPANNING TREE

of the next switch).

No additional switches/bridges are connected to edge ports. Termination devices are con-

nected to edge ports.

An alternate port is a path to the root that did not become a root port; therefore, this port

is not part of the active topology.

RSTP Conﬁguration

Set the Rapid Spanning Tree status to Enable in order to start RSTP using default settings.

Priority values can be specied for the switch. e root and alternate ports can be specied

via these priority values (see Figure 6.4).

e desired value can simply be entered in the Priority eld. Only multiples of 4096 are

permitted; the value will be rounded automatically to the next multiple of 4096. Once you

have conrmed the modication by entering your password, the initialization mechanism

is started. Redundant connections can now be created.

e Maximum Age of STP Information, Hello Time, and Forward Delay elds have the

same meaning as for STP. ese values are used when this switch becomes a root. e values

currently used can be found under RSTP General.

Figure 6.4 – RSTP Conﬁguration Web Page

 Maximum Age of STP Information – STP information Bridge Protocol Data Unit

(BPDU) is sent by the root switch at an age of “0” and at Hello Time intervals. If a

BPDU was received, every other switch sends its own conguration message via the

ports for which the switch itself is the designated switch. e age of the information

(BPDU) is increased by one second every time the information passes a switch.

 Hello Time – is value species the time interval within which the root bridge regu-

larly reports to the other bridges via BPDU.

 Forward Delay – e forward delay value indicates how long the switch is to wait in

order for the port state in STP mode to change from “Discarding” to “Listening” and

from “Listening” to “Learning” (2 x forward delay).

RSTP Port Table

All ports that do not receive any RSTP BPDUs become edge ports, i.e., ports that switch to

1 2 ... 52 53 54 55 56 57 58 59 60 61 62 ... 75 76

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Wavetronix Click 342 (lean managed ethernet switch) (CLK-342) Manuale Utente Pagina 57