Connecting up
4.5 DSL connection
SCALANCE M826
50
Operating Instructions, 08/2018, C79000-G8976-C362-05
SHDSL speed [Kb/s]
Path cost
2048
9765625
2304
8680555
2688
7440476
3072
6510417
3456
5787036
3840
5208333
4224
4734848
4608
4340277
4992
4006410
5376
3720238
5696
3511236
6144
3255208
6656
3004807
7168
2790178
7680
2604166
8192
2441406
8704
2297794
9216
2170138
9728
2055921
10240
1953125
10752
1860119
11264
1775568
11776
1698369
12288
1627604
13056
1532802
13824
1447597
14592
1371365
15232
1313715
The path costs to the root bridge are added from the port to port path costs from the bridge
to the root bridge.
Port role and port status
The port role and port status are only negotiated when the SHDSL connection is actually
established.
Note that the ring topology becomes unstable if the SHDSL connection speed is below 384
kbps. If the SHDSL connection is overloaded, a hello frame may arrive too late causing a
constant topology change.
Summary of Contents for SIMATIC NET SCALANCE M826
Page 7: ...Preface SCALANCE M826 Operating Instructions 08 2018 C79000 G8976 C362 05 7 ...
Page 8: ......
Page 16: ...Security recommendations SCALANCE M826 16 Operating Instructions 08 2018 C79000 G8976 C362 05 ...
Page 28: ......
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Page 74: ...Index SCALANCE M826 74 Operating Instructions 08 2018 C79000 G8976 C362 05 ...