Network Topology and Networking Capability. Functional block diagram of TM. Hardware configuration of the OptiX OSN 9500 when serves as an STM-64 TM, страница 2

1.1.3  MADM

MADM is the combination of ADMs. Besides the function of ADM, it can cross connect the ADMs within it. The ADMs may be of one rate or different rates. MADM is the core of a complex network. Figure 1-6 shows its functional block diagram. The OptiX OSN 9500 can be configured as ADMs at any rate ranging from STM-1 to STM-64 to form an MADM.

Figure 1-6 Functional Block diagram of MADM

MADM is used in the central node of a ring with chain, intersecting rings, tangent rings or hub network.

n  STM-64 MADM

Figure 1-7 shows a hardware configuration when the OptiX OSN 9500 serves as an STM-64 MADM. Insert six JL64 boards to realize the function of MADM and configure boards in other slots based on service requirements.

Figure 1-7 Hardware configuration of the OptiX OSN 9500 when serves as an STM-64 MADM

n  STM-16 MADM

Figure 1-8 shows a hardware configuration when the OptiX OSN 9500 serves as an STM-16 MADM. Insert six JL16 boards to realize the function of MADM and configure boards in other slots based on service requirements.

Figure 1-8 Hardware configuration of the OptiX OSN 9500 when serves as an STM-16 MADM

n  STM-64/STM-16 hybrid MADM

Figure 1-8 shows a hardware configuration when the OptiX OSN 9500 serves as STM-64/STM-16 hybrid MADM. Four JL16 boards achieve the function of STM-16 MADM and four JL64 boards achieve the function of STM-64 MADM. Configure the rest slots based on service requirements.

Figure 1-9 Hardware configuration of the OptiX OSN 9500 when serves as STM-64/STM-16 MADM

1.2  Network Topology

The transmission network usually adopts a topology of chain or ring. The OptiX OSN 9500 can realize the chain or ring networking at STM-1, STM-4, STM-16 or STM-64 level. Some complex networks like tangent rings, intersecting rings, ring with chain, dual node interconnection (DNI) and hub network (combination of ring and chain networks) are realizable, as shown in Table 1-1.

Moreover, the intelligent OptiX OSN 9500 supports mesh networking and re-route protection to improve network reliability and bandwidth utilization.

The topology type and protection mode of an optical transmission network should be determined by the practical line structure, service type, traffic and protection requirements. The principle is to protect services through the networking plan and data settings. For an ordinary network, the ring network is preferred. For an intelligent network, the mesh network is preferred.

Table 1-1 Network topology

No.	Topology type	Topology
1	Chain network
2	Ring network
3	Tangent rings
4	Intersecting rings
5	Ring with chain network
6	Dual node interconnection (DNI)
7	Hub network
8	Mesh network
Legend:

1.3  Networking and Grooming Capability

1.3.1  Networking Capability

The OptiX OSN 9500 that works in the metro and long-haul backbone node has powerful networking capability. It can network with equipment with/without intelligent features. It can work with MSTP and DWDM products developed by Huawei Technologies Co., Ltd. (hereafter referred as Huawei) to form a complete MAN solution. For example, products like the OptiX OSN 3500, the OptiX 10G, the OptiX OSN 2500 and the OptiX OSN 1500. Figure 1-10 shows a hybrid network. The network comprises the OptiX OSN 9500 and some other equipment. The intelligent OptiX OSN 9500 can form a mesh network to improve network reliability and bandwidth utilization. Meanwhile, it can work together with some conventional equipment to groom large traffic.

Figure 1-10 Hybrid network of the OptiX OSN 9500 and other equipment

The intelligent OptiX OSN 9500 supports auto-discovery and report of network topology. It provides distributed mesh network in fast re-route and preconfigure protection modes. It also supports span protection and end-to-end protection to improve the scalability of the network.

The OptiX OSN 9500 can interwork with other equipment at the same layer. At the backbone layer, the OptiX OSN 9500 can work with the OptiX 10G or DWDM product, as shown in Figure 1-11.

Figure 1-11  Hybrid network of the OptiX OSN 9500, the OptiX 10G and the OptiX OSN 3500

The OptiX OSN 9500 can support the following protection schemes separately:

n  10 STM-64 4-fiber MSP rings

n  20 STM-64 2-fiber MSP rings

n  40 STM-16 4-fiber MSP rings

n  80 STM-16 2-fiber MSP rings

1.3.2  Grooming Capability

The OptiX OSN 9500 has great grooming capability. Thus, it can allocate services of different rates (STM-64/STM-16/STM-4/STM-1) at backbone layer, convergence layer or access layer, as shown in Figure 1-12. Its higher order cross connect capability is up to 720 G at VC-4 level. Its lower order cross connect capability is up to 20 G at VC-3/VC-12 level.

The OptiX OSN 9500 can realize the transparent transmission of 1000 M Ethernet service.

Figure 1-12 Grooming capability of the OptiX OSN 9500