Wavetronix Click 342 (lean managed ethernet switch) (CLK-342) Bedienungsanleitung PDF herunterladen (Seite 59)

58 CHAPTER 6  RAPID SPANNING TREE

e switch with the lowest numerical switch ID becomes the root. It is recommended

that the root port and alternate port are specied using the priority.

 Port Identiﬁer – e port ID consists of 4 bits for the port priority and 12 bits for the

port number. e port ID is interpreted as an unsigned integer value. When comparing

two port IDs, the one with the lowest numeric value is of higher priority.

Figure 6.5 – RSTP Port Conﬁguration Web Page

e RSTP Port Conguration page contains the following elds (see Figure 6.5):

 Port Number – Indicates the number of the port currently selected.

 Port Name – Indicates the name of the port.

 RSTP Port State – Indicates the status in which this port takes part in STP.

 Operational Edge Port – Indicates whether this port is operated as an edge port.

 Admin Edge Port – Here you can specify whether this port is to be operated as an edge

port (default setting), if possible.

 Priority – Indicates the priority set for this port. Due to backwards compatibility with

STP, priority values can be set that are not congurable in RSTP.

 Admin Path Cost – Indicates the path costs set for this port. A path cost equal to “0”

activates the cost calculation according to the transmission speed (10 MBps = 100; 100

MBps = 19).

 Path Cost – Indicates the path costs used for this port.

 Forward Transitions – Indicates how oen the port switches from the “Discarding”

state to the “Forwarding” state. Additional parameters provide information about net-

work paths in a stable topology that are used by the BPDU telegrams.

 Designated Root – Gives the root bridge for this Spanning Tree.

 Designated Bridge – Indicates the switch from which the port receives the best BPDUs.

e value is based on the priority value in hex and the MAC address.

 Designated Port – Gives the port from which the BPDUs are sent. e value is based

on the port priority (2 digits) and the port number.

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Wavetronix Click 342 (lean managed ethernet switch) (CLK-342) Bedienungsanleitung Seite 59