Figure 3-14 Signal Flow And Timeslot Allocation; Figure 3-16 Signal Flow And Timeslot Allocation - Huawei OptiX OSN 550 Configuration Manual

OptiX OSN 550 Multi-Service CPE Optical Transmission
System
Configuration Guide
3.10.2 Signal Flow and Timeslot Allocation
To configure the service on the MSP ring with a non-protection chain, you should plan a proper
traffic direction and a timeslot allocation scheme for the services on the SNCP ring and the
services on the non-protection chain.
Figure 3-18
and the timeslot allocation to the services on the MSP ring with a non-protection chain. In this
example, five E1 services are added to or dropped from NE3 and NE5, and these services pass
through NE4.
On the MSP ring, the services from NE3 to NE4 in this example are transmitted on the short
path. In the actual configuration, you can plan other service paths according to the requirement.
NOTE
Figure 3-18 Signal flow and timeslot allocation
3.10.3 Per-NE Configuration Process
The configuration of the services on the two-fiber bidirectional MSP ring with a non-protection
chain is independent of the creation of the protection subnets for the MSP and for the non-
protection chain. To configure the services on the two-fiber bidirectional MSP ring with a non-
protection chain, configure the SDH services from the tributary board to the line board on the
source and sink NEs and configure pass-through services on the intermediate NEs, if the
protection subnet is already created.
Issue 02 (2011-06-30)
shows the signal flow of the services on the MSP ring with a non-protection chain
On a ring network, the long path and short path do not actually refer to the geographical distance. They are
determined by the number of intermediate NEs. As shown in
from NE3 to NE4, NE3→NE4 is the short path, and NE3→NE2→NE1→NE4 is the long path.
1-SL4D-1
1-SL4D-2
NE2
1-SL4D-1
1-SL4D-2
Line board
Tributary board
Traffic direction of the MSP ring
Traffic direction of the non-protection chain
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Copyright © Huawei Technologies Co., Ltd.
1-SL4D-2
NE4:
NE1
1-SL4D-1
线路板
MSP ring
NE4
1-SL4D-2
NE3
1-SL4D-1
VC4-1:1-5(VC12)
NE3:
5×E1
Line board Tributary board
1-SL4D-1
3 Configuring SDH Services
Figure 3-18, when the service is transmitted
Line board Line board
Line board
1-SL4D-1 1-SL4D-2
2-SL1D-1
2-SL1D-1 2-SL1D-1
Non-protection
chain
NE5
VC4-1:1-5(VC12)
Line board Tributary board
2-SL1D-1
3-SP3D
3-SP3D
5×E1
3-SP3D
3-63