Hirschmann GREYHOUND GRS1020, Reference Manual

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Redundancy
12.8 Subring
183
UM Config GRS
Release 8.0 09/2019
If you use MRP for the main ring and the subring, then specify the VLAN settings as follows:

VLAN X for the main ring
– on the ring ports of the main ring participants
– on the main ring ports of the Subring Manager

VLAN Y for the Subring
– on the ring ports of the Subring participants
– on the subring ports of the Subring Manager
You can use the same VLAN for multiple subrings.
12.8.2 Subring example
In the following example, you couple a new network segment with 3 devices to an existing main ring
which uses the MRP protocol. When you couple the network at both ends instead of 1 end, the
subring provides increased availability with the corresponding configuration.
You couple the new network segment as a subring. You couple the subring to the existing devices
of the main ring using the following configuration types.
Figure 47: Example of a subring structure
orange line= Main ring members in VLAN 1
black line= Subring members in VLAN 2
orange dash line= Main ring loop open
black dash line= Subring loop open
red line = Redundant link member in VLAN 1
SRM = Subring Manager
RM = Ring Manager
Proceed as follows to configure a subring:

Configure the three devices of the new network segment as participants in an MRP ring:
– Configure the transmission rate and the duplex mode for the ring ports in accordance with
the following table:
Table 30: Port settings for subring ports
Port type Bit rate Autonegotiation
(automatic
configuration)
Port setting Duplex
TX 100 Mbit/s off on 100 Mbit/s full duplex (FDX)
TX 1 Gbit/s on on -
Optical 100 Mbit/s off on 100 Mbit/s full duplex (FDX)
Optical 1 Gbit/s on on -
Optical 10 Gbit/s - on 10 Gbit/s full duplex (FDX)
RM
1
1.1
1.2
1.1 1.2
1.1
1.2
2
1.1 1.2
1.1 1.2
1.1 1.2
1.3
S RM 1
S RM 2
1.1
1.2 1.3
1.1
1.2
VLAN VLAN