• Author / Uploaded
• Nguyen Minh Tu

• Categories
• Ethernet
• Red de computadoras
• Estándares de red
• Ingeniería Informática
• Infraestructura de Telecomunicaciones

Citation preview

OptiX Metro 100 System Description

Contents

Contents 1 Location in Networks

1-1

2 Equipment Functionality

2-1

2.1 New Fuctions

2-1

2.2 Functions

2-1

2.2.1 High Integration

2-1

2.2.2 Low Power Consumption

2-1

2.2.3 Easy and Flexible Installation

2-1

2.2.4 Multi-service Access Capability

2-2

2.2.5 Network Level Protection

2-2

2.2.6 Multiple Management Modes

2-2

2.2.7 NM Information Exchange with the Third-Party Equipment

2-2

2.2.8 Multiple Power Inputs

2-2

2.2.9 Uniform Alarm Management

2-2

2.2.10 SSM Management

2-2

2.2.11 Rich Diagnostic Approaches

2-3

2.2.12 In-Service Software Upgrade

2-3

2.2.13 Easy operation and maintenance

2-3

2.2.14 Easy Commissioning

2-4

3 Equipment Architecture

3-1

3.1 Hardware Architecture

3-1

3.1.1 Appearance

3-1

3.1.2 Hardware Configuration

3-2

3.1.3 Front Panel

3-4

3.2 System Architecture

3-7

3.2.1 STM-1 Line Unit

3-7

Huawei Technologies Proprietary i

OptiX Metro 100 System Description

Contents

3.2.2 E1 Tributary Unit

3-8

3.2.3 Ethernet Unit

3-8

3.2.4 Cross-Connect Unit

3-9

3.2.5 Clock Unit

3-9

3.2.6 SCC Unit

3-10

3.2.7 Power Unit

3-10

4 Networking Application

4-1

4.1 Network Topology

4-1

4.1.1 Independent Networking

4-1

4.1.2 Hybrid Networking

4-1

4.2 Exchanging NM Informatin with the Third Party Equipment

4-3

4.2.1 Extended D Byte

4-3

4.2.2 TP4（OSI over DCC）

4-3

4.3 IP Over DCC

4-4

4.4 SNMP

4-5

4.5 Network-Level Protection

4-7

4.5.1 Linear Multiplex Section Protection

4-7

4.5.2 Sub-network Connection Protection (SNCP)

4-7

4.6 Ethernet Service Transparent Transmission

4-7

4.6.1 Networking Application

4-8

4.6.2 Realization Mode

4-9

5 Technical Specifications

5-1

5.1 Equipment Parameters

5-1

5.2 Optical Interface Performance

5-1

5.2.1 STM-1 Optical Interface

5-1

5.2.2 1000M Ethernet Optical Interface

5-2

5.3 PDH Electrical Interface Performance

5-3

5.4 Ethernet Service Performance

5-3

5.4.1 10M/100M Ethernet Service Performance

5-3

5.4.2 1000M Ethernet Service Performance

5-3

5.5 Power Supply Index

5-5

5.6 Environment Index

5-5

5.7 EMC Index

5-5

5.8 Availability

5-5

Huawei Technologies Proprietary ii

OptiX Metro 100 System Description

Figures

Figures Figure 1-1 Location of the OptiX Metro 100 in a transport network

1-1

Figure 3-1 Appearance of the OptiX Metro 100 (–48 V/–60 V DC input + 1 STM-1 + E1)

3-1

Figure 3-2 Appearance of the OptiX Metro 100 (–48 V/–60 V DC input + 2 STM-1 + E1 + 10M/100M)

3-1

Figure 3-3 Appearance of the OptiX Metro 100 (-48 V/-60 V DC input + 2 STM-1 + E1 + 1000M)

3-2

Figure 3-4 Front panel of the OptiX Metro 100 (DC input+E1+FE)

3-4

Figure 3-5 Front panel of the OptiX Metro 100 (DC input+E1+GE)

3-4

Figure 3-6 OptiX Metro 100 system architecture

3-7

Figure 4-1 Chain network composed of the OptiX Metro 100

4-1

Figure 4-2 Ring network composed of the OptiX Metro 100

4-1

Figure 4-3 Hybrid networking with other equipment

4-2

Figure 4-4 Hybrid networking through extended DCC byte

4-3

Figure 4-5 Managing the OptiX equipment by OSI DCN

4-3

Figure 4-6 Managing the OptiX equipment by the OSI network of other venders’ equipment

4-4

Figure 4-7 Managing other venders’ equipment by the OptiX equipment

4-4

Figure 4-8 Third party equipment transparently transmitting NM information

4-5

Figure 4-9 Transparently transmitting third party NM information

4-5

Figure 4-10 Connecting SNMP NM with NE through IP

4-6

Figure 4-11 SNMP NM manages remote OptiX Metro 100 through IP transparent transmission

4-7

Figure 4-12 Ethernet service transparent transmission

4-9

Huawei Technologies Proprietary iii

OptiX Metro 100 System Description

Tables

Tables Table 3-1 Configuration for accessing a single service

3-2

Table 3-2 Configurations for accessing E1 service and 10M/100M Ethernet service simultaneously

3-3

Table 3-3 Configurations for accessing1000M Ethernet service

3-3

Table 3-4 Interfaces on the front panel

3-4

Table 3-5 LCD and buttons on the front panel

3-5

Table 3-6 Indicator on the front panel

3-5

Table 3-7 Comparison of SL1, SD1, SFP, SB1, and SB2

3-8

Table 3-8 Number of clock sources provided by different equipment types

3-10

Table 5-1 Hardware parameters of the OptiX Metro 100

5-1

Table 5-2 STM-1 optical interface performance

5-1

Table 5-3 1000M Ethernet optical interface performance

5-2

Table 5-4 E1 electrical interface performance

5-3

Table 5-5 10M/100M Ethernet service performance

5-3

Table 5-6 1000M Ethernet service performance

5-4

Table 5-7 Power supply parameters

5-5

Table 5-8 Environment index

5-5

Huawei Technologies Proprietary iv

OptiX Metro 100 System Description

1 Location in Networks

1

Location in Networks

Serving as the network terminal unit of transport networks, the OptiX Metro 100 provides STM-1 optical interfaces to access E1 services, 10M/100M and 1000M Ethernet services. Figure 1-1 illustrates the location of the OptiX Metro 100 in a transport network. OptiX 10G(Metro 5000)

OptiX OSN 9500 OptiX 10G(Metro 5000) Backbone layer

OptiX 2500+(Metro 3000)

OptiX 2500+(Metro 3000) Convergence layer

OptiX 155/ 622H(Metro 1000)

OptiX 155/ 622H(Metro 1000)

Access layer

OptiX Metro 500

OptiX Metro 500

OptiX Metro 100

OptiX Metro 100

Switching / Base Station

Network terminal unit

Ethernet

Figure 1-1 Location of the OptiX Metro 100 in a transport network

Huawei Technologies Proprietary 1-1

OptiX Metro 100 System Description

2 Equipment

2

Equipment Functionality

This chapter introduces the functions provided by the OptiX Metro 100.

2.1 New Fuctions Compared with the OptiX Metro 100 V100R001, V100R002 has the following new functions: n

Supporting gigabit Ethernet (GE) service

n

Supporting linear multiplex section protection

n

Supporting IP over DCC

n

Supporting simple network management protocol (SNMP)

2.2 Functions 2.2.1 High Integration The OptiX Metro 100 is designed in case shape, with the height being 1U. The dimensions of the chassis are 436 mm (W) x 200 mm (D) x 42 mm (H). Except the power module, all the other functional units are integrated into one circuit board only.

2.2.2 Low Power Consumption The normal power consumption of the OptiX Metro 100 is about 15 W, no need for fans. (If a Gigabit Ethernet processing module is configured to the equipment, its power consumption is about 20 W.)

2.2.3 Easy and Flexible Installation The OptiX Metro 100 features easy and flexible installation. According to the installation environment, you can install the OptiX Metro 100: n

In the ETSI 300 mm cabinet or ETSI 600 mm cabinet.

n

In the 19-inch cabinet.

n

On the wall.

Huawei Technologies Proprietary 2-1

OptiX Metro 100 System Description

2 Equipment n

Outdoors.

n

On the desktop.

2.2.4 Multi-service Access Capability The OptiX Metro 100 can access: n

8 x E1 services.

n

4 x 10M/100M services.

n

1 x 1000M service.

n

1/2 x STM-1 services.

2.2.5 Network Level Protection When the OptiX Metro 100 is ADM equipment, it can provide the following protection schemes for the services: n

Sub-network connection (SNC) protection

n

1+1 linear multiplex section protection

n

1:1 linear multiplex section protection

2.2.6 Multiple Management Modes The OptiX Metro 100 can be managed by: n OptiX iManager T2000 network management system. n

Web-LCT local management system.

n

LCD control panel.

2.2.7 NM Information Exchange with the Third-Party Equipment The OptiX Metro 100 exchanges NM information with the third-party equipment through the following approaches: n D1–D3 or D4–D12 bytes ECC communication. n

TP4 (OSI over DCC)

n

IP over DCC

n

Simple network management protocol (SNMP)

2.2.8 Multiple Power Inputs The OptiX Metro 100 supports the following power inputs: n

100 V/240 V AC

n

–48 V/–60 V DC

n

+24 V DC

2.2.9 Uniform Alarm Management The OptiX Metro 100 provides three Boolean input interfaces to uniformly manage the alarms and external monitoring equipment. The OptiX Metro 100 also provides one Boolean output interface to output alarms to the centralized alarm system.

2.2.10 SSM Management The OptiX Metro 100 supports: Huawei Technologies Proprietary 2-2

OptiX Metro 100 System Description

2 Equipment n

Standard synchronization status message (SSM).

n

Extended SSM.

2.2.11 Rich Diagnostic Approaches The OptiX Metro 100 supports the following diagnostic approaches: n

Outloop on STM-1 ports.

n

Inloop and outloop of VC4 path.

n

Inloop and outloop of VC3 path for Ethernet service.

n

Inloop and outloop on E1 ports.

n n

Inloop of Ethernet port. According indicators.

n

According equipment power-down alarm.

n

According LCD control panel.

n

Test frames on the SDH line for make/break test of Ethernet services.

n

Fault diagnosis.

2.2.12 In-Service Software Upgrade The OptiX Metro 100 supports in-service upgrade and remote loading of NE software.

2.2.13 Easy operation and maintenance The OptiX Metro 100 provides an LCD control panel and a Web-LCT configuration tool to ease operation and maintenance. 1. LCD Control Panel

You can operate the OptiX Metro 100 through the LCD control panel. Operations supported by the LCD control panel are as follows. n

Query and set NE ID and IP address.

n

Provide default configuration for the OptiX Metro 100 with single optical interface.

n n

Query and set the working mode and enabled/disabled status of Ethernet ports. Query and set loopback on E1 ports and Ethernet ports.

n

Query and set clock source priority.

n

Query critical alarms.

n

Query the impedance of E1 ports.

n

Query equipment version.

n n

Query the current clock source. Start hardware self-check and query the result.

n

Start fault diagnosis and query the result.

2. Web-LCT

The OptiX Metro 100 provides the Web-LCT (Local Craft Terminal) software. The software offers good management and configuration functions, with simple interface design and parameter input. It also provides the service configuration wizard for easier operation.

Huawei Technologies Proprietary 2-3

OptiX Metro 100 System Description

2 Equipment

Below are the functions of the Web-LCT: n

Service configuration wizard Hardware configuration

n

Service configuration

n

Ethernet management

n

Alarm query

n

Performance operation

n

SNC protection management

n

Clock configuration

n

Security management

n

Data backup

n

2.2.14 Easy Commissioning Through the LCD control panel, the OptiX Metro 100 can start self-check program to ease the equipment commissioning.

Huawei Technologies Proprietary 2-4

OptiX Metro 100 System Description

3 Equipment

3

Equipment Architecture

This chapter introduces hardware and software architecture of the OptiX Metro 100. The product appearance and the description of interfaces, indicators, configuration, and functional units are given below.

3.1 Hardware Architecture 3.1.1 Appearance The OptiX Metro 100 allows multiple configuration modes depending on the power modules and service types. These configuration modes are same in the structure except the type and amount of interfaces. Figure 3-1 shows the equipment with “–48 V/–60 V DC + 1 STM-1 + E1”. Figure 3-2 shows the equipment with “–48 V/–60 V DC + 2 STM-1 + E1 + 10M/100M”. Figure 3-3 shows the equipment with “–48 V/–60 V DC + 2 STM-1 + E1 + 1000M”.

Figure 3-1 Appearance of the OptiX Metro 100 (–48 V/–60 V DC input + 1 STM-1 + E1)

Figure 3-2 Appearance of the OptiX Metro 100 (–48 V/–60 V DC input + 2 STM-1 + E1 + 10M/100M)

Huawei Technologies Proprietary 3-1

OptiX Metro 100 System Description

3 Equipment

Figure 3-3 Appearance of the OptiX Metro 100 (-48 V/-60 V DC input + 2 STM-1 + E1 + 1000M)

3.1.2 Hardware Configuration The OptiX Metro 100 provides multiple configuration types consisting of different power modules, optical interface modules, E1 service modules and 10M/100M Ethernet service modules. The section below introduces the configurations for a single service and for multiple services. 1. Accessing Single Service

Table 3-1 shows the configurations supported by the OptiX Metro 100 when accessing a single service. Table 3-1 Configuration for accessing a single service

Power module

100 V/240 V

–48 V/–60 V

+24 V

Optical interface module Single-port two-fiber SC/single-fiber bidirectional SC

E1 service module 75 ohm

120 ohm

√

√

–

–

–

√

–

–

–

√

√

–

–

–

√

–

–

–

√

√

–

–

–

√

–

–

–

√

√

√

10M/100M service module

2. Accessing E1 Service and 10M/100M Ethernet Service Simultaneously

When accessing E1 services and 10M/100M Ethernet services simultaneously, the OptiX Metro 100 supports the configurations listed in Table 3-2.

Huawei Technologies Proprietary 3-2

OptiX Metro 100 System Description

3 Equipment Table 3-2 Configurations for accessing E1 service and 10M/100M Ethernet service simultaneously

Power module

100 V/240 V

Optical interface module Dual-port two-fiber SC/single-fiber bidirectional SC

Dual-port two-fiber LC (SFP)

√

–

√

–

–48 V/–60 V

√

–

√

–

+24 V

√

–

√

–

E1 service module 75 120 ohm ohm

10M/100M service module

√

–

√

–

√

√

√

–

√

-

√

√

√

–

√

–

√

√

√

–

√

–

√

√

√

–

√

–

√

√

√

–

√

–

√

√

3. Accessing 1000M Ethernet Service

Table 3-3 shows the configurations supported by the OptiX Metro 100 when accessing1000M Ethernet service. Table 3-3 Configurations for accessing1000M Ethernet service

Power module

Optical interface module Dual-port two-fiber LC (SFP)

100 V/240 V –48 V/–60 V

+24 V

√

√

√

Huawei Technologies Proprietary 3-3

E1 service module 75 120 ohm ohm

1000M service module

√

–

√

–

√

√

√

–

√

–

√

√

√

–

√

–

√

√

OptiX Metro 100 System Description

3 Equipment

3.1.3 Front Panel As shown in Figure 3-4, the front panel provides interfaces, buttons and indicators for various purposes. The section below introduces the front panel of the configuration with “–48 V/–60 DC input + 2 STM-1 + E1 + 10M/100M”.

Figure 3-4 Front panel of the OptiX Metro 100 (DC input+E1+FE)

Figure 3-5 Front panel of the OptiX Metro 100 (DC input+E1+GE)

1. Interfaces

Table 3-4 gives the details about the interfaces on the front panel. Table 3-4 Interfaces on the front panel

No.

Interface

Function

Connector type

1

Power supply interface

Provide power supply for the equipment.

The connector for the DC power is a 4-pin socket. The connector for the AC power is a 3-core socket.

2

TX / RX

Input/output STM-1 optical signals.

SC/LC (SFP*)

3

10/100BASE-T (Figure 3-4)

Input/output 10M/100M Ethernet electrical signals.

RJ-45

1000BASE-X/T (Figure 3-5)

Input/output 1000M Ethernet optical signals.

RJ-45 or LC (SFP )

E1 1–8

Input/output E1 electrical signals.

DB44

4

Huawei Technologies Proprietary 3-4

*

OptiX Metro 100 System Description

3 Equipment No.

Interface

Function

Connector type

5

NM-LAN

Connect with NM system to manage and configure the equipment.

RJ-45

6

ALARM

Provide 3-input and 1-output Boolean value.

RJ-45

7

ESD

Connect with an ESD wrist strap. Always wear an ESD wrist strap when operating the equipment to avoid static damage to it.

–

SFP*: Small Form-Factor Pluggable.

2. LCD and Operation Buttons

You can configure data for the equipment through LCD and buttons. Table 3-5 gives the details about the LCD and buttons on the front panel. Table 3-5 LCD and buttons on the front panel

No.

LCD/Button

Function

8

Power

Power switch, used to power on/off the power supply.

9

LCD

Used to show the equipment configuration and query result.

10

ESC, , , ENT/MENU

Used to configure the equipment and query the configuration.

11

ACO

Audible alarm cut button, used to mute an audible alarm.

12

RST

Reset button (RESET), used to reset the equipment.

13

LAMP TEST

LED test button. Press down the button, all indicators on the front panel will be on; release it, all indicators will be renewed to working state.

3. Indicators

On the front panel, there are indicators for optical signals, E1 service signals and Ethernet service signals. You can judge whether the equipment is working normally through these indicators. Table 3-6 lists the description for each indicator. Table 3-6 Indicator on the front panel

Indicator

Status

Description

RUN (running indicator)

Flashing five times every second

Loading NE software.

Flashing three times every

Deleting NE software.

Huawei Technologies Proprietary 3-5

OptiX Metro 100 System Description

3 Equipment Indicator

Status second

Description

Flashing once every second

NE software lost. Waiting to load NE software.

Flashing once every two seconds

Normal running

MAJ (major alarm indicator)

On

Critical or major alarm occurs.

MIN (minor alarm indicator)

On

Minor alarm occurs.

ACO (alarm cutoff indicator)

On

The alarm sound is cut off.

LOS (loss of line signal)

On

R_LOS alarm occurs to STM-1 optical interface.

E1 1–8 (multicolor indicator alerting loss of E1 signal.)

Off

E1 port is not used.

Constantly on, red

E1_LOS alarm occurs to E1 path.

Flashing, red

Major alarms (not E1_LOS) occur to E1 path.

Constantly on, orange

Minor alarm occurs to E1 path.

Flashing, orange

BIPEXC alarm occurs to E1 path.

Constantly on, green

E1 path is in use and no alarm occurs.

On

The link connection is normal.

Off

The link is broken or not connected.

Flashing or on

Data are being transmitted.

Off

No data is being transmitted.

RJ-45 indicator

LINK (green) ACT (yellow)

E1 1–8 corresponds to eight E1 channels.

Huawei Technologies Proprietary 3-6

OptiX Metro 100 System Description

3 Equipment

3.2 System Architecture For the OptiX Metro 100 accessing multiple services, its system architecture is divided functionally into the following parts shown in Figure 3-6. n

STM-1 Line Unit

n

E1 Tributary Unit

n

Ethernet Unit

n

Cross-Connect Unit

n

Clock Unit

n

SCC Unit

n

Power Unit VC-4

STM-1 optical signal

4x 4

Line unit

External pow er supply

Tributary unit

VC-4 Crossconnect unit

STM-1 optical signal

Clock unit

Power unit

E1 service and Etherne service

VC-4

E1 service and Etherne service

SCC unit

Figure 3-6 OptiX Metro 100 system architecture

3.2.1 STM-1 Line Unit The OptiX Metro 100 can form different equipment types when configured with different line units, such as SL1, SD1, SFP, SB1, or SB2. Supported functions: n

Processes up to two STM-1 signals.

n

Provides alarms and performance events for checking line modules.

n

Provides inloop/outloop and automatic loop release functions to line signals for fast fault location.

n

Supports laser shutdown (ALS) function.

n

Provides single-fiber transceiving and two-fiber transceiving modules for the SC interface.

n

Supports S1.1 optical module, with transmission distance being 15 km.

n

Provides SFP optical modules and support LC interfaces. When using the SFP optical module, you can query the optical module information and laser performance through the software.

Table 3-7 compares SL1, SD1, SFP, SB1, and SB2. Huawei Technologies Proprietary 3-7

OptiX Metro 100 System Description

3 Equipment Table 3-7 Comparison of SL1, SD1, SFP, SB1, and SB2

Line unit Item

SL1

SD1

SFP

SB1

SB2

Processing capability

1 x STM-1

2 x STM-1

2 x STM-1

1 x STM-1

2 x STM-1

Optical module type

Dual-fiber receiving /transmitting S-1.1

Dual-fiber receiving /transmitting S1.1

Dual-fiber receiving /transmitting S1.1

Single-fiber receiving /transmitting S1.1

Single-fiber receiving /transmitting

SC

SC

LC

SC

SC

Connector type

S1.1

3.2.2 E1 Tributary Unit The OptiX Metro 100 can form different equipment types when configured with different tributary unit like 75 ohm or 120 ohm PL1S. Supported functions: n n

Processes up to eight E1 signals. Collects the alarms and performance events of the VC12 channel.

n

Provides inloop/outloop and automatic loop release functions to E1 signals for fast fault location.

n

Extracts the 2 MHz clock of the first E1 signal and send it to the clock unit as the tributary clock source.

n

Provides the interface impedance of 120 ohms or 75 ohms. The impedance of the interface is defined before delivery and cannot be set on site.

3.2.3 Ethernet Unit The OptiX Metro 100 cannot support 10M/100M and 1000M Ethernet services simultaneously. If a 10M/100M Ethernet tributary unit is already configured, then the 1000M Ethernet tributary unit cannot be configured. 1. 10M/100M Ethernet Unit

The OptiX Metro 100 can be configured with the EFT tributary unit to transparently transmit 10/100M Ethernet service. Supported functions: n Supports the transparent transmission of four 10M/100M Ethernet services. n

Supports the generic framing procedure-framed (GFP-F) encapsulation protocol.

n

Supports 10M/100M full duplex and auto-negotiation.

n

Provides the bandwidth of 1 x VC4 at the SDH side.

n

Supports up to 3 x VC3s or 63 x VC12s binding bandwidth.

n

Supports VC12-level or VC3-level virtual concatenation.

n

Supports link capacity adjustment scheme (LCAS).

n

Provides Ethernet port inloop function.

Huawei Technologies Proprietary 3-8

OptiX Metro 100 System Description

3 Equipment n

Sends test frames in the direction of line to test the make/break status of services.

n

Supports the JUMBO frame.

2. 1000M Ethernet Unit

The OptiX Metro 100 can be configured with the EGT tributary unit to transparently transmit 1000M Ethernet service. Supported functions: n

Provides 1 x LC 1000BASE-SX/LX/T GE optical interfaces. The interfaces comply with IEEE802.3z standards.

n

Adopts hot-swappable SFP optical interfaces to support a transmission distance of 550 m for multimode fiber and 10 km for single-mode fiber.

n

Supports encapsulation modes generic framing procedure-framed (GFP-F), link access procedure-SDH (LAPS) and high level data link control (HDLC). Supports link capacity adjustment scheme (LCAS) to dynamically increase/decrease and protect bandwidth.

n

n

Provides the bandwidth of 1 x VC4 at the SDH side.

n

Supports VC12-level or VC3-level virtual concatenation.

n

Supports up to 3 x VC3s or 63 x VC12s binding bandwidth.

n

Supports 1000M full duplex.

3.2.4 Cross-Connect Unit The cross-connect unit (XCS) is a functional unit necessarily configured for various OptiX Metro 100 equipment types. Supported functions: n n

Provides the service grooming capability of the add/drop multiplexer (ADM). Supports 4 x 4 VC4s full cross-connect, 12 x 12 VC3s full cross-connect and 252 X 252 VC12s full cross-connect.

3.2.5 Clock Unit The clock unit (STGA or STGT) is a functional unit necessarily configured for various OptiX Metro 100 equipment types. Supported functions: n

Provides clock synchronization for the STM-1 line unit, E1 tributary unit and Ethernet tributary unit.

n

Locks the line clock of the STM-1 line unit or the tributary clock source of the E1 tributary unit.

n

Provides four clock sources: two line clock sources, one tributary clock source and one internal clock source. When the OptiX Metro 100 is configured as an ADM, supports the locked mode, holdover mode and free-run mode.

n

n

When the OptiX Metro 100 is configured as a terminal multiplexer (TM), and clock unit is STGT, the clock supports the locked mode and free-run mode.

Huawei Technologies Proprietary 3-9

OptiX Metro 100 System Description

3 Equipment

When the OptiX Metro 100 is configured as a terminal multiplexer (TM), and clock unit is STGA, the clock supports locked mode, holdover mode and free-run mode. n Provide multiple clock sources. Table 3-8 shows the number of clock sources provided by different equipment types. Table 3-8 Number of clock sources provided by different equipment types n

Equipment type

Number of clock sources

Single optical interface + E1 tributary unit

3 clock sources: 1 line clock source, 1 tributary clock source, and 1 internal clock source.

Single optical interface + Ethernet tributary unit

2 clock sources: 1 line clock source and 1 internal clock source.

Dual optical interfaces + E1 tributary unit

4 clock sources: 2 line clock sources, 1 tributary clock source, and 1 internal clock source.

Dual optical interfaces + E1 tributary unit + Ethernet tributary unit

4 clock sources: 2 line clock sources, 1 tributary clock source, and 1 internal clock source

Dual optical interfaces + Ethernet tributary unit

3 clock sources: 2 line clock sources and 1 internal clock source

3.2.6 SCC Unit The SCC unit is a functional unit necessarily configured for various OptiX Metro 100 equipment types.

Supported functions: n

Provides Ethernet management interface, through which the NM system manages and configures the equipment.

n

Provides data communication channels (DCC) to communicate with remote NEs.

n

Communicates with the STM-1 signal processing unit, E1 signal processing unit and Ethernet service signal processing unit, to monitor their alarms and performances, and report them to the NM.

3.2.7 Power Unit The OptiX Metro 100 supports 110 V/220 V AC input, –48 V/–60 V and +24 V DC input, to provide power supply for the service units.

Huawei Technologies Proprietary 3-10

OptiX Metro 100 System Description

4 Networking Application

4

Networking Application

4.1 Network Topology The OptiX Metro 100 is applied as the network terminal unit of the transport network. The traffic is light and the networking is simple. The OptiX Metro 100 may form a network alone, or work with other transmission equipment, such as the OptiX 155/622H(Metro1000).

4.1.1 Independent Networking The OptiX Metro 100 supports two types of NE: TM and ADM. It can form chain networks and ring networks independently, as shown in Figure 4-1 and Figure 4-2.

Figure 4-1 Chain network composed of the OptiX Metro 100

STM-1 Ring

Figure 4-2 Ring network composed of the OptiX Metro 100

4.1.2 Hybrid Networking The OptiX Metro 100 can work with other transmission equipment in a network, as shown in Figure 4-3.

Huawei Technologies Proprietary 4-1

OptiX Metro 100 System Description

4 Networking Application OptiX 155/ 622H(Metro1000)

OptiX Metro 100

Figure 4-3 Hybrid networking with other equipment

Huawei Technologies Proprietary 4-2

OptiX Metro 100 System Description

4 Networking Application

4.2 Exchanging NM Informatin with the Third Party Equipment 4.2.1 Extended D Byte As shown in Figure 4-4, when the OptiX Metro 100 networks with the third party equipment, NM information can be flexibly configured on D1–D3 or D4–D12 bytes at the boundary. OptiX Metro 100

Third party equipment D4-D12

D1-D3

Huawei NM

OptiX Metro 100 D1-D3

Thrid party NM

Figure 4-4 Hybrid networking through extended DCC byte

4.2.2 TP4（OSI over DCC） OSI over DCC means DCC communication using the open systems interconnection (OSI) protocol stack. This solution can be used for most existing networks without the need for extra overheads and service channels, thus simplifying the network architecture and saving network resources for the user. 1. Managing the OptiX Equipment by OSI DCN

Figure 4-5 shows how to manage a network composed of the OptiX equipment by layer-3 routing function of OSI DCN.

LAN(OSI) OSI DCN

OptiX Ring

T2000

Figure 4-5 Managing the OptiX equipment by OSI DCN

2. Managing the OptiX Equipment by the OSI Network of Other Venders’

Equipment Figure 4-6 shows how to manage a network composed of the OptiX equipment by layer-3 routing function of the OSI stack of other venders’ equipment.

Huawei Technologies Proprietary 4-3

OptiX Metro 100 System Description

4 Networking Application

Other Vender's Ring

OSI DCN

LAN

OptiX Ring

DCC

T2000

Figure 4-6 Managing the OptiX equipment by the OSI network of other venders’ equipment

& Note: The OptiX equipment can interconnect with other venders’ equipment through Ethernet (ISO 802.3) or optical interfaces (DCC). To interconnect with the optical interface, the protocols at the physical layer and the link layer of both parties should be compatible.

3. Managing other Venders’ Equipment by the OptiX Equipment

Figure 4-7 shows how to manage other venders’ equipment that use the OSI stack by the routing function of the OSI protocol stack of the OptiX equipment.

OptiX Ring

OSI DCN

LAN DCC

Other Vender's Ring

Other Vender's EMS

Figure 4-7 Managing other venders’ equipment by the OptiX equipment

4.3 IP Over DCC The scheme of IP over DCC uses the network layer protocol for NM information transmission. It is required that the gateway NE, external DCN and element management system (EMS) all support internet protocol (IP), thus the network composed of the third-party equipment and that composed of Huawei's equipment (such as the OptiX Metro 100) can form a DCN. IP over DCC has two networking topologies: n

The NM information of the OptiX Metro 100 is transparently transmitted through IP over DCC by the third-party equipment, as shown in Figure 4-8.

n

The NM information of the third party is transparently transmitted through IP over DCC by the OptiX Metro 100, as shown in Figure 4-9.

Huawei Technologies Proprietary 4-4

OptiX Metro 100 System Description

4 Networking Application

Third party equipment

IP Over DCC

Third party equipment

Figure 4-8 Third party equipment transparently transmitting NM information

Third party equipment

Third party equipment

IP Over DCC

Third party equipment Third party equipment

Figure 4-9 Transparently transmitting third party NM information

4.4 SNMP The simple network management protocol (SNMP) is a standard network management protocol based on user datagram protocol (UDP). The OptiX Metro 100 provides an SNMP-compatible management interface, through which any NM system that supports SNMP can access and manage the OptiX Metro 100. The interface enables the OptiX Metro 100 to connect with a third-party NM system. The following is the SNMP networking and application. 1. Connecting NM with NE through IP

Figure 4-10 shows the connection of SNMP NM and the OptiX Metro 100 through IP.

Huawei Technologies Proprietary 4-5

OptiX Metro 100 System Description

4 Networking Application

Such as T2000 MML/TL1

SNMP NM

NonSNMP NM

IP network

NM configuration information

OptiX Metro 100

Figure 4-10 Connecting SNMP NM with NE through IP

The SNMP interface does not transmit/receive NM communication packets through a communication module. The manager sends requests to UDP port 161; the agent sends traps to UDP port 162 by default, but you can change it. To access the OptiX Metro 100, the SNMP NM needs to provision SNMP information of the NE in advance, and to deliver the information of itself to the NE through non-SNMP NM or command lines. The information to be delivered to the NE includes the UDP port of the traps to be sent, reading and writing community name, NM's IP address and trap version. Thus, the SNMP NM can access the NE directly. Otherwise, the access will be denied. 2. NM Manages Remote NEs through SNMP Over ECC

Figure 4-11 illustrates how the SNMP NM manages the remote OptiX Metro 100 through transparent transmission of NE IP.

Huawei Technologies Proprietary 4-6

OptiX Metro 100 System Description

4 Networking Application

SNMP NM

IP network SDH subnet supports IP transparent transmission Gateway NE

SDH subnet (support IP over DCC)

Remote OptiX Metro 100

OptiX Metro 100 (support IP over DCC)

Figure 4-11 SNMP NM manages remote OptiX Metro 100 through IP transparent transmission

This application requires IP communication between NM and NE, with UDP being the transport network protocol. Though the OptiX Metro 100 can support IP transparent transmission, the SNMP still cannot access the remote NE unless all NEs in the subnet support IP over DCC. Before accessing the remote NE, it is necessary to provision the NM configuration information for the NE, as described in the section above. Otherwise, the access will be denied.

4.5 Network-Level Protection 4.5.1 Linear Multiplex Section Protection This protection is used in the linear networking mode. The OptiX Metro 100 supports the 1+1 and 1:1 protections in the point-to-point linear networking. In the 1:1 mode, it supports to carry extra traffic in the protection system. The switching modes supported in the 1+1 and 1:1 protections are as follows: n

1+1: Single-ended/dual-ended switching revertive/non-revertive mode

n

1:1: Dual-ended switching revertive mode

The service switching time for these two protection modes is less than 50 ms specified in ITU-T Recommendation G.841.

4.5.2 Sub-network Connection Protection (SNCP) The OptiX Metro 100 supports SNCP as required by ITU-T Recommendation G.841. Even multiple service switching events occur at the same time, the switching time can still be less than 50ms. The OptiX Metro 100 supports the end to end conversion of an unprotected trail to a SNCP-protected trail, as shown in Figure 4-12.

Huawei Technologies Proprietary 4-7

OptiX Metro 100 System Description

4 Networking Application A unprotected trail

NE2 NE1

NE6 NE3

NE5

NE4

NE7 NE8

Convert to a unprotected trail

Convert to a SNCP-protected trail

The working trail

NE2 NE1

NE6 NE3

NE5

NE4

NE7 NE8

The protection trail

Figure 4-12 End to end conversion of a unprotected trail to a SNCP-protected trail

An unprotected trail can be converted to an SNCP-protected trail through Trail Management in the T2000. An SNCP-protected trail can also be converted to an unprotected trail. Further more, the following operations can be provided at trail level: n

Manual switching to protection path

n

Manual switching to working path

n

Force switching to protection path

n

Force switching to working path

n

The wait-to-restore (WTR) time

n

Revertive or non-revertive mode

4.6 Ethernet Service Transparent Transmission When configured with EFT or EGT, the OptiX Metro 100 supports transparent transmission of Ethernet service. The EFT unit is taken as an example to introduce the transmission of Ethernet service.

4.6.1 Networking Application The OptiX Metro 100 configured with the 10M/100M Ethernet service processing module supports the transparent transmission of Ethernet services. As shown in Figure 4-13, company A needs to transmit Ethernet services between NE1 and NE2 through the OptiX Metro 100. Company A can provide 100 Mbit/s Ethernet electrical interfaces and require a 10 Mbit/s bandwidth.

Huawei Technologies Proprietary 4-8

OptiX Metro 100 System Description

4 Networking Application MAC1

MAC1

A

A NE 1

NE 2

Enterprise user

OptiX Metro 100

Figure 4-13 Ethernet service transparent transmission

At NE1, the services of company A is accessed through the Ethernet ports (MAC 1), so is the service at NE2.

4.6.2 Realization Mode

Hardware configuration

Realization mode

Protection

NE1 and NE2 require the OptiX Metro 100 configured with an Ethernet tributary unit.

Port routing

Depend on the protection schemes supported by SDH equipment

MAC1 of NE1ïð MAC1 of NE2

& Note: In this example, if GE service is accessed, its transparent transmission is realized in the same way. The OptiX Metro 100 configured with the 1000M Ethernet tributary unit can be used.

Huawei Technologies Proprietary 4-9

OptiX Metro 100 System Description

5 Technical Specifications

5

Technical Specifications

5.1 Equipment Parameters Table 5-1 gives the weight, dimensions and power consumption of the OptiX Metro 100. Table 5-1 Hardware parameters of the OptiX Metro 100

Equipment

Power consumption

Weight

Dimensions

OptiX Metro 100

About 15 W;