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HUAWEI OptiX OSN 8800 T64/T32 Intelligent Optical Transport Platform. Product Overview - part 1

Introduction

About This Chapter

1.1 Positioning

The OptiX OSN 8800 T32 and OptiX OSN 8800 T64 are mainly applicable to the backbone

core layers. They are also applicable to the core layers and metropolitan convergence layers.

1.2 Product Features

As a one-box product (OTN+OCS), the equipment integrates functions such as WDM

transport, ROADM, 40G, electrical T-bit cross-connection, cross-connections of any

granularity in the range of 100M to 40G, ASON, and rich management and protection.

1.1 Positioning

The OptiX OSN 8800 T32 and OptiX OSN 8800 T64 are mainly applicable to the backbone

core layers. They are also applicable to the core layers and metropolitan convergence layers.

The OptiX OSN 8800 T32 and OptiX OSN 8800 T64 can be used with the metropolitan

DWDM equipment, SDH equipment, and data communication equipment at the backbone

layer to provide a large-capacity transport channel for services and network egresses. The

OptiX OSN 8800 T32 and OptiX OSN 8800 T64 apply to the long-distance and

large-capacity transmission of nation-level trunk and inter-province trunk to maximally meet

the requirements of large-capacity and ultra-long haul transmission for carriers. In addition,

the OptiX OSN 8800 T32 and OptiX OSN 8800 T64 provide carriers with a stable platform

for multi-service operation and future network capacity expansion.

The OptiX OSN 8800 T32 and OptiX OSN 8800 T64 use dense wavelength division

multiplexing (DWDM) technologies to achieve transparent transmission with multiple

services and large capacity. It not only provides service grooming at the optical layer on a

wavelength basis by using the ROADM technology, but also provides sub-wavelength

grooming based on ODUflex/ODU3/ODU2/ODU1/ODU0. This improves the flexibility in

service grooming and bandwidth utilization to a great extent.

The OptiX OSN 8800 can interconnect with the OptiX OSN 6800/OptiX OSN 3800/OptiX

OSN 1800 to form an end-to-end OTN network. Also, they can interconnect with the OptiX

BWS 1600G to form a WDM network. Typically, the OptiX OSN 8800 is applied to the OTN

network. In addition, the OptiX OSN 8800 can interconnect with the NG SDH/PTN or data

communication equipment to form a hybrid network, realizing a complete transport solution.

This is usually applied to the OCS network. Figure 1-1 and Figure 1-2 show the position of

the OptiX OSN 8800 T32 and OptiX OSN 8800 T64 in the overall network hierarchy.

Figure 1-1 Position of the OptiX OSN 8800 in the network hierarchy (OTN network)

OptiX OSN

OptiX

8800 T32

BWS 1600G

OptiX OSN

8800 T32

OptiX OSN

80-wavelengths

8800 T64

OptiX OSN

8800 T64

OptiX OSN

Backbones

8800 T64

core layers

OptiX OSN

6800

OptiX OSN

OptiX Metro

OptiX OSN

3500

8800 T32

6100

7500

40-wavelengths

STM-16

STM-64

OptiX OSN

3500

OptiX Metro

OptiX OSN

Convergence

OptiX OSN

6100

OptiX OSN

8800 T32

layers

7500

8800 T16

OptiX OSN

OptiXOSN

3800

1800

3500

3800

STM-16

STM-4

STM-4/1

OptiX OSN

3500

OptiX OSN

3800

3500

3800

Access

OptiX OSN

layers

7500

The OptiX OSN 8800 provides OptiX OSN 8800 T64 subracks, OptiX OSN 8800 T32 subracks and

OptiX OSN 8800 T16 subracks.

Figure 1-2 Position of the OptiX OSN 8800 in the network hierarchy (OCS network)

OptiX OSN

8800 T64

8800 T32

OptiX OSN

8800 T64

OptiX OSN

STM-64

8800 T32

OptiX OSN

8800 T64

OptiX OS

OptiX OSN

Backbones

8800 T64

8800 T32

core layers

OptiX OSN 2500

OptiX OSN 3500

OptiX OSN

2500

3500

OptiX OSN

3500

STM-16

OptiX OSN

2500

OptiX OSN 2500

Convergence

OptiX OSN 3500

layers

OptiX OSN

1500

OptiX OSN

2500

OptiX OSN

STM-4/1

2500

OptiX OSN

1500

OptiX OSN

2500

1500

GSM/CDMA

PSTN

Ethernet

ATM

Access

layers

The OptiX OSN 8800 provides OptiX OSN 8800 T64 subracks and OptiX OSN 8800 T32 subracks.

1.2 Product Features

As a one-box product (OTN+OCS), the equipment integrates functions such as WDM

transport, ROADM, 40G, electrical T-bit cross-connection, cross-connections of any

granularity in the range of 100M to 40G, ASON, and rich management and protection.

Transmission Equipment with High Integration and Ultra Capacity

The equipment is of high integration, which enables flexible service configuration. A network

built with the equipment is easy to design, to expand, and to maintain, and requires a smaller

number of spare parts.

The equipment supports access of massive services and centralized cross-connections and

management of the services. This avoids assembly of multiple subracks. The equipment is of

high integration. For example, one PID chip is integrated with tens of photoelectric

components to achieve 12 x 10G transmission.

When used as an 80/40-channel system, the OptiX OSN 8800 supports:

 Service access over one channel of 2.5 Gbit/s, 10 Gbit/s, 40 Gbit/s.

 Transmission of 10 Gbit/s services over a distance of 5000 km, 40 Gbit/s services over a

distance of 2000 km without electrical regeneration.

 Ultra long-haul transmission of 10 Gbit/s services over a 1 x 82 dB single span.

The OptiX OSN 8800 CWDM systems support service access over eight wavelengths. Each

wavelength supports a maximum rate of 2.5 Gbit/s.

The ASIC and PID technologies enable design of a board with high density and help reduce

power consumption of each port. Ultra cross-connections help reduce bridging at many ODF

and also save space in telecommunications rooms.

The OptiX OSN 8800 T32 supports centralized cross-connections through a cross-connect

board. The OptiX OSN 8800 T32 provides one type of cross-connection boards, that is, XCH.

It supports hybrid cross-connections of ODU0, ODU1, ODU2, ODU3, and ODUflex signals,

and supports a 1.28 Tbit/s cross-connect capacity to the maximum.

The OptiX OSN 8800 T64 provides three types of cross-connect boards, that is, XCT, SXH

and SXM. The XCT must be used together with SXH or SXM. The OptiX OSN 8800 T64

supports hybrid cross-connections of ODU0, ODU1, ODU2, ODU3, and ODUflex signals,

and supports a 2.56 Tbit/s cross-connect capacity to the maximum.

Dynamic Optical-Layer Cross-Connections

Dynamic intra-ring grooming and inter-ring grooming can be realized using the ROADM

board.

Dynamic optical layer grooming can be classified into intra-ring grooming and inter-ring

grooming, or into two-dimensional grooming and multi-dimensional grooming.

Dimension refers to transmission direction. Two-dimensional grooming refers to wavelength

grooming in two transmission directions. Multi-dimensional grooming refers to wavelength

grooming in multiple transmission directions.

Full Service Access over Shared 10G and 40G Channels

The ODUk sub-wavelengths can be flexibly combined to share 10G/40G line bandwidth for

transmission. This enables uniform carrying of any services over one wavelength and

therefore improves wavelength utilization to a great extent.

Bandwidth is tailored for services. This improves the efficiency of transmission bandwidth

and achieves "zero waste" of bandwidth.

Hybrid O/E Cross-Connections and Quick Service Deployment

Hybrid O/E cross-connections achieve flexible cross-connections of wavelength or

sub-wavelength services. Quick service deployment helps reduce CapEx. On a flattened

network, services are easy to plan, deploy, and expand. Much less time needs to be taken to

provision a service.

High Reliability

The tributary/line separated structure maximizes the return on investment and reduces the

number of spare parts. When service type changes, users only need to replace the tributary

boards but fully reuse the existing line boards. The use of independent line and tributary

boards reduces the number and type of spare parts from N x M to N + M (N, M > 2), thereby

helping operators reduce construction costs.

Rich OAM, Easy Maintenance, and Lower OpEx

The rich O/E overhead information on OTN equipment leads to a more transparent network,

facilitates fault identification, and helps reduce maintenance costs.

The PRBS function enables quick self-check of OTUs, quick assessment of channel

performance, and quick fault identification.

The "5A" auto-adjustment function:

 Automatic level control (ALC) function effectively resolves the problem of attenuation

of fibers operating over a long term.

 Automatic gain control (AGC) enables adaptation to transient changes in the number of

wavelengths.

 Automatic power equilibrium (APE) enables auto-optimization of OSNR specification of

each channel.

 Intelligent power adjustment (IPA) avoids personal injuries (to eyes or bodies) resulting

from laser radiation in case of anomalies such as a fiber cut.

 The optical power adjust (OPA) is made to ensure that the input power of the OTU board

and OA board meet the commissioning requirements.

Support monitor channel power, central wavelength, OSNR, and overall optical spectrum, and

also supports remote real-time measurement of optical spectrum parameters.

Product Architecture

About This Chapter

2.1 System Architecture

The OptiX OSN 8800 system uses the L0 + L1 + L2 architecture. Ethernet switching is

implemented on Layer 2, ODUk/VC switching on Layer 1, and wavelength switching on

Layer 0.

2.2 Hardware Architecture

2.3 Software Architecture

The system software includes the board software, NE software and the network management

system.

2.1 System Architecture

The OptiX OSN 8800 system uses the L0 + L1 + L2 architecture. Ethernet switching is

implemented on Layer 2, ODUk/VC switching on Layer 1, and wavelength switching on

Layer 0.

Figure 2-1 and Figure 2-2 show the system architecture of the OptiX OSN 8800 used as an

OTN and an OCS system, respectively.

Figure 2-1 System architecture of the OptiX OSN 8800 (OTN)

To line fiber

Optical-layer board

WDM-side optical module

Client-side optical module

Cross-

connect

board

Signal processing module

(active)

(standy)

ODUk

Line board

Tributary board

WDM-side optical module

Clock board (active)

Clock board (standby)

Signal processing module

Power (active)

L2 switching module

-48 V/-60 V DC

Power (standby)

Client-side optical module

Fans

NMS

OTU board

External alarm

Auxiliary

External clock/

interface

external time

System control and communication

board

DCN

board (active)

System control and communication

board (standby)

Backplane

Control and communication bus & Clock bus

Electrical signal

Electrical cross-connect bus(ODUk)

Optical-layer service

In Figure 2-1, L2 switching module is marked in a dotted line box, indicating that not all the OTU or

tributary boards provide a Layer 2 switching module.

 An OTU board equipped with a Layer 2 switching module is referred to as an Ethernet over WDM

(EoW) board.

 A tributary board equipped with a Layer 2 switching module is referred to as an Ethernet over OTN

(EoO) board.

Figure 2-2 System architecture of the OptiX OSN 8800 (OCS)

To line fiber

Optical-layer board

Inteface processing module

Signal processing module

VCx

Line board

Cross-

connect

board

Inteface processing module

Clock board (active)

(active)

(standy)

Clock board (standby)

L2 switching module

、

Signal processing module

Power (active)

-48 V/-60 V DC

VCx

EoS board

Power (standby)

Fans

NMS

External alarm

Auxiliary

interface

External clock/

board

external time

System control and communication

DCN

board (active)

System control and communication

board (standby)

Backplane

Control and communication bus & Clock bus

Optical-layer service

Electrical cross-connect bus

Electrical signal

Functions of modules are as follows:

 Optical-layer boards are classified into optical multiplexer and demultiplexer boards,

optical add/drop multiplexing (OADM) boards, optical amplifier (OA) boards, optical

supervisory channel (OSC) boards, optical spectrum analysis boards, optical variable

attenuator boards, and optical power and dispersion equalization boards. These boards

are intended to process optical-layer services, for example, to cross-connect wavelengths

at the optical layer.



Electrical-layer boards such as OTU, tributary, and line boards are used to process

electrical-layer signals, and perform conversion between optical and electrical signals.

The OptiX OSN 8800 uses a tributary-line-separate architecture, and a centralized

cross-connect unit to flexibly groom electrical-layer signals at different granularities.



For OptiX OSN 8800, EoO, EoW, Ethernet over SDH (EoS) boards have the L2

processing capabilities, and they can add, strip, and exchange VLAN tags, learn MAC

addresses, and forward packets.



As the control center of the entire system, the system control and communication (SCC)

board cooperates with the network management system (NMS) to manage boards in the

system and to implement inter-subrack communication.



The clock board provides system clock signals and frame header signals to each service

board, and synchronizes the local system time with the upstream system time, achieving

clock and time synchronization.



The power supply and fan systems with a redundancy protection design ensure

highly-reliable equipment operation.



The auxiliary interface board provides functional ports such as clock/time input/output

ports, management serial port, alarm output and cascading ports, and alarm input/output

ports.



Inter-board communication and service cross-connections, clock synchronization, and

power supplies are implemented using the backplane buses. Backplane buses include

control and communication buses, clock buses, and power buses.

2.2 Hardware Architecture

2.2.1 Cabinet

In typical configuration, the OptiX OSN 8800 T32 is installed in N63B cabinet. The OptiX

OSN 8800 T64 is installed in N66B cabinet. In typical configuration, the OptiX OSN 8800

T32 and the OptiX OSN 8800 T16 are installed in N63B cabinet. The OptiX OSN 8800 T64

is installed in N66B cabinet.

The OptiX OSN 8800 T32/ has subracks as the basic working units. The subrack of the OptiX

OSN 8800 T32 has independent power supply and can be installed in N63B cabinet, or N66B

cabinet.

The OptiX OSN 8800 T64 has subracks as the basic working units. The subrack of the OptiX

OSN 8800 T64 has independent power supply and can be installed in N66B cabinet.

N63B Cabinet Structure

The N63B is an ETSI middle-column cabinet with 300 mm depth, complying with the ETS

300-119 standard.

The following subracks can be installed on the N63B cabinet: OptiX OSN 8800 T32, OptiX

OSN and OptiX OSN 6800.

The N63B cabinet consists of the rack (main frame), open-close type front door, rear panel

fixed by screws, and side panels at the left and right sides.

Cabinet doors and side panels can be disassembled. The front door and side panels have

grounding points. Keys to the front door of all N63B cabinets are the same.

Figure 2-3 shows the appearance of the N63B cabinet.

Figure 2-3 N63B cabinet appearance

Configuration of the Integrated N63B Cabinet

Typical configuration of the N63B cabinet involves settings of the following items: the

subrack type, the number of subracks, DCM and CRPC frames, and the PDU model.

Table 2-1 lists the typical configurations of the N63B cabinet.

There are two types of ETSI 300 mm rear-column cabinets: T63B and N63B. These two types of

cabinets differ in color and door. You can perform an expansion installation on the T63B cabinet based

on the typical configurations of the N63B cabinet.

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