Figure 3-13 Networking Diagram Of The Services On The Sncp Ring - Huawei OptiX OSN 550 Configuration Manual

OptiX OSN 550 Multi-Service CPE Optical Transmission
System
Configuration Guide
timeslots for the working service and protection service, and configure pass-through services on
the intermediate nodes. The following part describes how to configure services on an SNCP ring
in an end-to-end manner.
3.8.1 Networking Diagram
The creation of an SNCP ring network is similar to the creation of an MSP ring network. For
example, the MSP and SNCP rings are constructed based on two fibers and their services must
pass through the intermediate nodes for transmission from the source NE to the sink NE. The
difference is that the SNCP protection and SNCP services can be created on the U2000 at a time.
Figure 3-13
example, the SP3D boards are configured on the source NE (NE1) and the sink NE (NE3) as
tributary boards to add and drop services, and the SL1D boards are used as line boards to transmit
SDH services.

Figure 3-13 Networking diagram of the services on the SNCP ring

NE2:
Line board Line board
1-SL1D-2
3.8.2 Signal Flow and Timeslot Allocation
Similar to the service configuration of an MSP ring, you need to plan proper traffic directions
before configuring the services on an SNCP ring, if multiple service routes are available from
the source end to the sink end. In the case of the services on the SNCP ring, allocate timeslots
for the source slot of the working service and timeslots for the source slot of the protection
service, when allocating timeslots for source slots.
Figure 3-14
to the services on the SNCP ring. In the actual configuration, you can plan other proper working
paths and protection paths according to the requirement. In this example, the working service
route is NE1-NE2-NE3 and the protection service route is NE1-NE4-NE3. There are five E1
services.
Issue 02 (2011-06-30)
shows an SNCP ring that comprises four pieces of MSTP equipment. In this
NE1:
Tributary board Line board Line board
3-SP3D
1-SL1D-1
1-SL1D-2
SNCP ring
NE2
1-SL1D-1
1-SL1D-1
1-SL1D-2
NE3:
Tributary board Line board Line board
3-SP3D
shows the signal flow of the services on the SNCP ring and the timeslot allocation
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Copyright © Huawei Technologies Co., Ltd.
1-SL1D-2
1-SL1D-1
3-SP3D
1-SL1D-2
NE1
1-SL1D-1
NE4
1-SL1D-2
NE3
NE4:
Line board Line board
1-SL1D-1
1-SL1D-1
3-SP3D
1-SL1D-1 1-SL1D-2
3 Configuring SDH Services
1-SL1D-2
3-45