Siemens SWT 3000 Equipment Manual page 265

Parameter
RSTP parameter >
Hello Time [s]
RSTP parameter >
Bridge Priority
RSTP parameter >
Bridge Identifier
RSTP parameter >
MaxAge Time [s]
RSTP parameter >
Forward Delay [s]
RSTP parameter >
Priority
RSTP parameter >
Transmit Count
RSTP parameter >
Cost Style
1) RSTP and OSM are disabled in EN100
Edit the Time zone and summer time as follows:
Smart Communication, SWT 3000 Teleprotection, Equipment Manual
C53000-G6040-C605-1, Edition 03.2020
Description
If no test message is received 3 times in a row during the specified
monitoring time, the connection is considered faulty. The link
status is also monitored. It leads to an immediate detection of an
interruption with subsequent changeover. Permissible values are
from 1 s to 10 s (the standard recommends a default setting of 2 s).
This value represents a priority for a switch. Every switch in the ring
network has a specific priority that has been set equally for all
switches by default. Furthermore, this priority is linked to the MAC
address within the switch, which always yields different priorities.
The lowest priority defines the logical separation of the ring
network. Here, the messages are output from the ring network. The
highest priority (identified by zero) marks the root switch. If
messages are output or input there, both logical lines must have
the same length. Permissible values are: 0, 4096, 8192, 12 288,
16 384, 20 480, 24 576, 28 672, 32 768, 36 864, 40 960, 45 056,
49 152, 53 248, 57 344, and 61 440 (the standard recommends a
default setting of 32768 s).
Enter a number from 0 to 4 294 967 295 as an identifier for the
switch (default setting: 2048).
Set a time from 6 s to 40 s. After this time has elapsed, older
messages will be removed from the network (default setting: 40 s).
The ports of the module remain in one of the conditions -
discarding, learning, and forwarding - not longer than for the time
set here. Permissible values are from 4 s to 30 s (the standard
recommends a setting of 21 s).
Every switch in the ring network has a specific priority that has
been set equally for all switches by default. The priority is preset by
the switch manufacturer. Furthermore, this priority is linked to the
MAC address within the switch, which always yields different priori-
ties. The lowest priority defines the logical separation of the ring
network. Here, the messages are output from the ring network. The
highest priority (identified by zero) marks the root switch. If
messages are output or input there, both logical lines must have
the same length (default setting: 128).
Maximum number of configuration messages sent for a specific
event (structural reconfiguration). This number must exceed the
number of existing switches in the ring network. Permissible values
are from 3 to 128 (the standard recommends a setting of 10).
This value is a variable that depends on the speed of the link
controlling the reconfiguration algorithm. A value of 200000 is
fixed for 200 Mbits. Changes are necessary only in special cases and
if Spanning Tree Protocol (STP) switches are used. The value -1 is
the identifier for the automatic mode.
PowerSys and Auxiliary Software Tools
5.8 MergeTool for IEC 61850
Setting Range or
Selection
From 1 s to 10 s
Change the RSTP
parameter settings
only if this change is
necessary. In partic-
ular, use the settings
recommended in this
manual.
From 0 s to 61 440 s
(in increments of
4096)
From 0 to 2 32
From 6 s to 40 s
From 4 s to 30 s
From 0 to 240 (in
increments of 16)
From 3 to 128
200000
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