Siemens SCALANCE W788-1PRO Operating Instructions Manual page 197

Configuration Using Web Based Management and the Command Line Interface
STP Cost & RSTP Cost
These parameters are used to calculate the path that will be selected. The
lo wer the value, the greater the probability that the corresponding path will
be used. If several po
lowe
was selected a
used.
The calculation
The
Cost should be
Typical path co
Data Rate
100 Mbps
54 Mbps
48 Mbps
36 Mbps
24 Mbps
18 Mbps
12 Mbps
11 Mbps
10 Mbps
9 Mbps
6 Mbps
5.5 Mbps
2 Mbps
1 Mbps
The values can
Edge
The following entries are possible in this column:
yes
An edge port is connected to this port.
no
A s
If n edg a
quickly witho
frame is re
no setting for further stations.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
rts of a bridg
st port number will be s
s the version, the value
of the path co
higher the achievable transmission rate, t
.
sts for Spanning Tree and R
Path costs STP
19
33
36
43
53
58
83
90
100
111
166
181
500
1000
, however, also be s
pann ing tre e or ra pid spanning
e port is connected, a SCALANCE W can switch over the port
u t taking into accou t spanning tree fra
ceived despite this setting, the port automatically changes to the
e have the same value, the port with the
elected. Dep ending on whether
of STP Cost or STP Cost will be
st is based mainly on the transmission rate.
he lowe the value for Path
apid Spanning Tree:
Path costs RSTP
200.000
370.370
41 6.667
555.556
833.333
1.111.111
1.666.667
1.818.182
2.000.00
2.222.222
3.333.333
3.636.36 4
10.000.000
20.000.000
ent individually.
tree device is c onnected
n
STP or RS TP
R
r
0
to this port.
more
mes. If a spa nning tre e
197