Protection; Equipment Level Protection; Network Level Protection; Table 2-6 Equipment Level Protection Provided By The Optix Osn 7500 - Huawei OptiX OSN 7500 Technical Manual

OptiX OSN 7500
Technical Manual - System Description
2.7

Protection

2.7.1 Equipment Level Protection

Table 2-6 shows the equipment level protection provided by the OptiX OSN 7500.

Table 2-6 Equipment level protection provided by the OptiX OSN 7500

Item
E1/T1 processing board
E3/DS3/E4/STM-1(e) processing
board
Ethernet processing board
ATM/IMA processing board
Cross-connect & timing unit
SCC unit
–48 V power interface board
3.3 V board power supply
Note:
The OptiX OSN 7500 supports the coexistence of two TPS protection groups of different
types.

2.7.2 Network Level Protection

In terms of network level protection, the OptiX OSN 7500 supports four-fiber/two-fiber
multiplex section protection (MSP) ring, linear MSP, shared optical path virtual trail
protection and sub-network connection protection (SNCP).
The four-fiber/two-fiber MSP ring can be constructed for STM-64, STM-16, STM-4
and STM-1 services for protection. Table 2-7 shows the maximum number of MSP
rings supported by the OptiX OSN 7500. At one time, the OptiX OSN 7500 only
supports one protection scheme in the following table.
Supporting a maximum of 255 nodes in the ring network and supporting stripping
at the destination node.
Solving fairness and congestion control problems.
Providing RPR protection.
Huawei Technologies Proprietary
Protection scheme
1:N (N≤4) tributary protection switching (TPS)
1:N (N≤3) TPS
1:1 TPS
1+1 backup
1+1 backup
1+1 backup
1+1 backup
1:N centralized backup
2-11
3 Hardware