Siemens SCALANCE XB-200 - Page 127

Configuring with Web Based Management
5.5 The "Layer 2" menu
SCALANCE XB-200 Web Based Management
Configuration Manual, 04/2015, C79000-G8976-C360-02
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Redundancy Mode
If you select "Ring" in the "Redundancy Type" drop-down list, the following options are
then available:
– Automatic Redundancy Detection
Select this setting to create an automatic configuration of the redundancy mode.
In the "Automatic Redundancy Detection" mode, the device automatically detects
whether or not there is a device with the "HRP Manager" role in the ring. If there is, the
device adopts the role "HRP" client.
If no HRP manager is found, all devices with the "Automatic Redundancy Detection"
or "MRP Auto Manager" setting negotiate among themselves to establish which
device adopts the role of "MRP Manager". The device with the lowest MAC address
will always become "MRP Manager". The other devices automatically set themselves
to "MRP Client" mode.
– MRP Auto-Manager
In the "MRP Auto Manager" mode, the devices negotiate among themselves to
establish which device will adopt the role of "MRP Manager". The device with the
lowest MAC address will always become "MRP Manager". The other devices
automatically set themselves to "MRP Client" mode.
In contrast to the setting "Automatic Redundancy Detection", the devices are not
capable of detecting whether or not an HRP manager is in the ring.
Note
MRP configuration in STEP 7
If you set the role "Manager (Auto)" or "Manager" for the device in STEP 7, in both
cases, "MRP Auto Manager" is displayed on this WBM page. In the display in the CLI,
a distinction is made between the
two roles.
– MRP Client
The device adopts the role of MRP client.
– HRP Client
The device adopts the role of HRP client.
– HRP Manager
Te device adopts the role of HRP manager.
When you configure an HRP ring, one device must be set as HRP manager. For all
other devices, "HRP Client" or "Automatic Redundancy Detection" must be set.
If you select "Spanning Tree" in the "Redundancy Type" drop-down list, the following
options are then available:
–
STP
Enables Spanning Tree Protocol. Typical reconfiguration times with spanning tree are
between 20 and 30 seconds.
–
RSTP
Enables Rapid Spanning Tree Protocol (RSTP). If a spanning tree frame is detected at
a port, this port reverts from RSTP to spanning tree.