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HUAWEI OptiX OSN 8800 T64/T32 Intelligent Optical Transport Platform. Product Description - part 3

Figure 3-2 Functional diagram of a WSS-based ROADM node

4/8

…

OAU

WSD9

WSM9

OAU

WSM9

WSD9

OAU

…

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WSS realizes colorless wavelength add/drop. Users can set the add/drop or pass-through state

of wavelengths on the NMS. In addition, the dynamic wavelength status can be adjusted remotely

and the services can be fast provisioned.

WSS supports the wavelength grooming in multiple directions and the multi-dimensional

ROADM structure. With WSS, the wavelength resources of multi-directional node on a ring

with chain or intersecting rings network are reconfigurable, as shown in Figure 3-3.

Figure 3-3 Inter-ring grooming ROADM solution

East

South

West

South

West

North

3.2.2 Application of Electrical-Layer Grooming

The OptiX OSN 8800 grooms services by means centralized cross-connections.

The OptiX OSN 8800 supports ODUflex, ODU0, ODU1, ODU2, and ODU3 cross-connections.

GE, 2.5G, and 10G services can share bandwidth to improve bandwidth utilization. As shown

in Figure 3-4, a GE service and a 2.5G service share a wavelength.

Figure 3-4 Application of electrical-layer grooming

3.2.3 Optical-Electrical Convergence Solution

At the service access end, the equipment cross-connects multi-rate services to 40G channels for

transmission. At a service pass-through station, the equipment fast transmits services by means

of ROADM optical cross-connections. At the service receive end, the equipment drops 40G

services from the line by processing electrical-layer cross-connections. If a wavelength conflict

occurs during optical-layer cross-connections, the equipment can convert wavelengths by means

of electrical-layer cross-connections. In addition, when the transmission distance exceeds the

limit, electrical regeneration can be used. As shown in Figure 3-5, the wavelengths of two

services conflict. In this case, wavelengths can be converted by means of electrical-layer cross-

connections. When the performance of the line deteriorates and results in bit errors, electrical

regeneration can be used to transmit services.

Figure 3-5 Application of electrical-layer grooming

Wavelength conflict

Optical

Bit errors

Layer

Grooming

Electrical

Layer

Grooming

STM-1/GE/2.5G/10G&40G

3.2.4 WDM ASON Solution

The equipment supports the ASON control plane. With the ASON control plane and WDM

features such as ROADM, FOADM, and optical wavelength/sub-wavelength protection, the

equipment provides an ideal WDM ASON solution.

At the core layer of a network, a mesh network is built with WSS/ROADM for wavelength

rerouting. At network edges, ring and chain networks are built with traditional FOADM, OTM,

or PLC ROADM, as the service volume is low and fiber resources are insufficient. For details,

see Figure 3-6.

An ASON network provides the same protection solutions as a traditional network does. In

addition, GMPLS and WSS together provide wavelength rerouting for services under no

protection or 1+1 protection on a mesh network. This helps improve survivability of services.

Figure 3-6 WDM ASON solution

PLC ROADM

OTM

OLA

FOADM

WSS ROADM

Non-protection

1+1 Protection

Services

3.2.5 PID Solution

This section describes typical PID application.

PID helps to effectively eliminate bandwidth and O&M bottlenecks on a WAN, leveraging the

features such as large capacity, high integration, versatile multi-service access, small size, and

environment-friendly design. On a WAN, a 40G/80G/120G/200G aggregation ring based on

PID boards only is recommended, eliminating commissioning while enabling quick service

provision.

Typical network 1: WAN for a small or medium-sized city

At the OTN aggregation layer, two to six aggregation rings can be deployed with two to four

NEs in each ring. A PID board(s) is used on each NE's line side. Build a 40G/80G/120G/

200G network using PID groups as required. On each aggregation ring, services are electrically

regenerated by the PID and cross-connect boards at each site. NEs at the OTN backbone layer

are interconnected with NEs on aggregation rings through PID boards. Figure 3-7 shows the

details.

Figure 3-7 WAN for a medium or large-sized city

40/80x10G

Backbone layer

Aggregation layer

200G ring

40G/80G ring

120G ring

: Router

: High-end router

: NG WDM equipment

: BRAS

: PID-installed NG WDM equipment at the aggregation layer

Typical network 2: WAN for a medium or large-sized city

At the OTN aggregation layer, 13 to 20 aggregation rings can be deployed with two to four NEs

in each ring. A PID board(s) is used on each NE's line side. Build a 40G/80G/120G/200G network

using PID groups as required. On each aggregation ring, services are electrically regenerated by

the PID and cross-connect boards at each site. NEs at the OTN backbone layer are interconnected

with NEs on aggregation rings through PID boards. Figure 3-8 shows the details.

Figure 3-8 WAN for a medium or large-sized city

80x40G Mesh

Backbone

layer

Aggregation

layer

200G ring

40G ring

80G ring

120G ring

: Router

: High-end router

: NG WDM equipment

: BRAS

: PID-installed NG WDM equipment at the aggregation layer

3.3 Typical OCS Networking

3.3.1 Networking for Multi-Granularity Service Grooming, Service

Convergence and Bandwidth Switching

The OptiX OSN 8800 can provide the networking application of the multi-granularity service

grooming and service convergence functions.

Figure 3-9 shows the networking application of the multi-granularity service grooming and

service convergence functions of the OptiX OSN 8800. The OptiX OSN 8800 implement the

large-capacity grooming of STM-64, STM-16, STM-4, STM-1 services. The OptiX OSN OptiX

OSN 8800 can form a hybrid network with different equipment such as DWDM and MSTP.

Figure 3-9 Networking configuration of the OptiX OSN 8800 performing multi-granularity

service grooming and service convergence

3.3.2 Networking Application of Ethernet Services

The networking application of Ethernet services includes point-to-point networking for the GE/

10GE service, Layer 2 switching networking for the GE/10GE service, and transparent

transmission networking for the GE service.

Point-to-Point Networking for the GE/10GE Service

A large and flexible bandwidth is required by Internet service provider (ISP) and application

service provider (ASP) for efficient service connection. The OptiX OSN 8800 provides a direct

GE service interface. Therefore, the point-to-point transmission of the Ethernet services over a

long distance can be realized over the SDH networks.

Figure 3-10 shows the flexible networking modes of the OptiX OSN 8800. The network can be

a chain, a ring, a mesh network or a combination of these three modes.

Figure 3-10 Point-to-point connection of the GE/10GE service

Layer 2 Switching Networking for the GE/10GE Service

The OptiX OSN 8800 equipment provides the Layer 2 switching boards to achieve the Layer 2

switching from a GE/10GE service to a GE/10GE service.

Figure 3-11 Transparent Transmission Networking for the GE/10GE Service

Transparent Transmission Networking for the GE/10GE Service

The Layer 2 switching boards of the OptiX OSN 8800 equipment can transparently transmit the

GE/10GE service. Moreover, it can be directly accessed to a router.

Figure 3-12 Transparent transmission of GE/10GE services

3.3.3 Networking with SDH Equipment to Be the Metropolitan

Backbone Node

The OptiX OSN 8800 node features powerful service grooming capability and stronger

survivability. The abundant service interfaces of the OptiX OSN 8800 meet the demand for

grooming services in the metropolitan backbone network. It can simplify the networking

topology and can be deployed in a hybrid network together with the other OptiX OSN product.

Working with the end-to-end trail management function of the U2000, the OptiX OSN 8800 can

be operated and maintained in simpler and more convenient manner.

Figure 3-13 Network of the OptiX OSN 8800 combined with the OptiX OSN product

3.3.4 Networking with DWDM Equipment to Be the Supertrunk

Backbone Node

The OptiX OSN 8800 can work with the OptiX BWS 1600 to increase the regenerator-free span-

crossing distance.

Figure 3-14 Networking application of the OptiX OSN 8800 and the DWDM equipment

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