Hirschmann GREYHOUND GRS1020, Reference Manual

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Redundancy
12.2 Media Redundancy Protocol (MRP)
155
UM Config GRS
Release 8.0 09/2019
When configuring with the Graphical User Interface, the device uses the default value 255 255 255
255 255 255 255 255 255 255 255 255 255 255 255 255 .

Enable the
Fixed backup
port.
Note: If selecting 200 ms for the ring recovery does not provide the ring stability necessary to meet
the requirements of your network, then select 500 ms.
mrp domain add default-domain
Creates a new MRP domain with the ID
default-
domain
.
mrp domain modify port primary 1/1
Specifies port
1/1
as ring port
1
.
mrp domain modify port secondary 1/2
Specifies port
1/2
as ring port
2
.

Enable the Ring Manager.
For the other devices in the ring, leave the setting as Off .

To allow the device to continue sending data on the secondary port after the ring is
restored, mark the Fixed backup checkbox.
Note: When the device reverts back to the primary port, the maximum ring recovery time can
be exceeded.
When you unmark the Fixed backup checkbox, and the ring is restored, the Ring Manager
blocks the secondary port and unblocks the primary port.
mrp domain modify port secondary 1/2
fixed-backup enable
Activates the
Fixed backup
function on the
secondary port. The secondary port continues
forwarding data after the ring is restored.

Enable the Ring Manager.
For the other devices in the ring, leave the setting as Off .
mrp domain modify mode manager
Specifies that the device operates as the
Ring
manager
. For the other devices in the ring, leave the
default setting.

Select the checkbox in the Advanced mode field.
mrp domain modify advanced
-
mode
enabled
Activates the advanced mode.

In the Ring recovery field, select the value 200ms .
mrp domain modify recovery
-
delay
200ms
Specifies the value
200ms
as the max. delay time for
the reconfiguration of the ring.