Huawei GGSN 9811 hardware and software

Revision Record

Course Code Product Product Version Course Version ISSUE

OWD908102 GGSN V900R008C01 ISSUE1.01

Developer/Modifier Time Approver New/Update

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Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page0

Jiyuan 2010/12 Jiyuan update

GGSN9811 Hardware and Software Overview

www.huawei.com

Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved.

References

� HUAWEI GGSN9811 Hardware Description

� HUAWEI GGSN9811 Hardware Installation


Objectives

� Upon completion of this course, you will be able to:

� Describe GGSN9811 hardware structure

� Describe GGSN9811 software structure

� Describe the board function


� Describe the service flow

Contents

1. Background Knowledge of GGSN9811

2. System Structure of GGSN9811

3. Cable Connection of GGSN9811

4. Service Flow of GGSN9811


4. Service Flow of GGSN9811

Contents


2. GGSN9811 Hardware and Software (NE40E Platform)



GGSN Location


Contents





Contents


2.1 System Structure of GGSN9811

2.2 Cable Connection of GGSN9811



2.3 Service Flow of GGSN9811

Contents


2.1.1 Hardware Introduction

2.1.2 Hardware Logical Structure


2.1.3 Software Logical Structure

Cabinet: N68E-22

1

3

4

5

2

6


Subrack(NE40E)

Power distribution box (3 U)

Filler panel (1 U)

Filler panel (2 U)

Filler panel (1 U)

Filler panel (2 U)

Filler panel (1 U)

Filler panel (2 U)

Filler panel (1 U)

Filler panel (2 U)

Filler panel (1 U)

Filler panel (2 U)

Filler panel (1 U)

High capacity fiber rack (1 U)

Filler panel (1 U)

LAN Switch cabling frame (1 U)

High capacity fiber rack (1 U)LAN Switch cabling frame (1 U)

1

2

9


Filler panel (1 U)



(subrack 20 U)

3

4

5

6

7

8

9

Board Configuration(NE40E)

C

A

R

D

C

C

A

R

D

C

12

S

87651

0

S

R

U

11

S

F

U

9

S

R

U

432

L

P

U

1

L

P

U

C

A

R

D

SPU-E SPU-E

C

C

A

R

D

C

A

R

D

C

A

R

D

C C C

GGSNSPU-E


Board Name Full Spelling

SRU Switching Route Unit

SPU Service Processing Unit

LPU Line Processing Unit

SFU Switching Fabric Unit

A

R

D

A

R

D

S

F

U

A

R

D

A

R

D

A

R

D

A

R

D

Board(NE40E)Physical Board Function

SRU: Switching

Route Unit

The SRU controls and manages the system.

SFU: Switching

Fabric Unit

The SFU performs the switching function,

supports expeditious data exchange.


SPU: Service

Processing Unit

The SPU performs functions such as service

control, user packet forwarding, flow control,

quality of service (QoS), and packet inspection.

LPU: Line Processing

Unit

The LPU provides physical interfaces that

connect the GGSN9811 to NEs or external

networks

SRU Board(NE40E)

SRU

RUN

ALM

ACT

LIN

K A

CT

LIN

K A

CT

ET

H 1

ET

H 0

OFL

SFUSFU

MPUMPU


AU

XC

ON

SO

LELI

NK

AC

T

ET

H 1

HD1: for BAMHD1: for BAM

SRUSRU

HD2: for CDRHD2: for CDR

SFU Board

� The SFU provides the switching

function.

� There are 4 SFU in the GGSN9811:

two stand alone SFU boards and

two SFU modules in two SRU


two SFU modules in two SRU

boards.

� These 4 SFU work in load share

mode.

SPU Board

� The SPU board handle all the

service related functions.

� Signalling: GTP, Radius, Diameter,

etc.

SPU

RUN

OFL

SPU


� Routing and forwarding.

� Security function.

� ..

LPU Board

� The LPU processes

and forwards service

data. In addition, the

LPU maintains and

manages link

LPU

RUN LPUOFL

RUN

10

OFL

10

1110

1312

LPUOFL

RUN0-

0

LPU

OFL

RUN


manages link

protocols and

forwarding

information base (FIB)

tables.

1110

232224

X10

/100

/100

0Bas

e-T

X-R

J45

0-7

24X

10/1

00/1

000B

ase-

SF

P

FE(10M/100M) LPUFE(10M/100M) LPU GE(1000M) LPUGE(1000M) LPU

Power distribution box (3 U)

Filler panel (1 U)

Filler panel (2 U)

Filler panel (1 U)

Filler panel (2 U)

Filler panel (1 U)

Filler panel (2 U)

Filler panel (1 U)

Filler panel (2 U)

Filler panel (1 U)

Filler panel (2 U)

Filler panel (1 U)LAN Switch cabling frame (1 U)

Power: Power Distribution Box

Front viewFront view



Filler panel (1 U)

Filler panel (1 U)



High capacity fiber rack (1 U)LAN Switch cabling frame (1 U)

(subrack 20 U)

InputInput

OutputOutput

Rear viewRear view

Power Supply Modules

1

2

NEG(-)


3

4

5

6

7

8

9NEG(-) IN OUT FAIL

ON

OFF

RTN(+)

PGND

1

2

3

4

5

1. –48 V power 2. Power

ground

3. Protection

ground

4. Power

switch

5. Handle

Contents






Hardware Architecture


Internal Connection

� The GGSN9811 subrack contains two types of data

exchange planes:

� Ethernet management

� For operation and maintenance


� Service data exchange planes

� For service

Ethernet Management Planes

� The GGSN9811 subrack consists of two Ethernet

management planes: plane A and plane B. The two

planes form the dual star topology. The bandwidth

between a management plane and a service board is 100

Mbit/s.


Mbit/s.

Service Data Exchange Planes

� The two SFU modules embedded in the two SRUs form

four exchange planes with the two SFUs.


Power Supply Monitoring

� The power supply monitoring module can monitor the

power distribution box (PDB) and power supplies of the

subrack.

� The subrack internal power supply module is monitored by


the SRU.

� PDB monitoring

Fan Monitoring

� The GGSN9811 subrack is equipped with a fan box on

the top. The fan box consists of nine fans and one fan

monitoring module. The fan monitoring module is used

to monitor the running status of fans and control the fan

speed.


speed.

Contents






Logical Structure

� The logical structure of

GGSN9811 as follow:

� AM（Access Management）

� SM（Service Management）

� CM（Charging Management）

OM

AM

CM

LMT


� PS（Platform Service）

� OM（Operation and Maintenance）

� LMT（Local Maintenance Terminal） PS

LMT

SM

OM System

� The OM system is the management center of the

GGSN9811


Platform Service System


Access Management System


Service Management System


Charging Management System


Contents







Contents


2.2.1 Console Cable Connection

2.2.2 Service Cable Connection


Console Cable Connection

RTN(+)

NEG(-)

COM1COM2

12345678910

A

12345678910

B

RTN(+)

NEG(-)

Power Distribution Box

1 2 8

1

X1 X2

1

8


SRU SRU

Subrack

Monitor Serial Cable Monitor Serial Cable for the Power for the Power Distribution Box Distribution Box

Contents


2.2.1 Console Cable Connection

2.2.2 Service Cable Connection


Ethernet Cable Connection


Contents







GGSN Main Processing Procedure

1. Create PDP Context Req

SRU

4.Create user connection

Route distribute

Route distribute

Buffer CDR


LPU SPU

RadiusServer

2. User authentication

Radius/DHCP/SPU

3. Address allocation

LPU

5. Create PDP Context Rsp

IP Addr

Gn uplink PDU

Forward

Gi uplink PDU

Gi downlink PDUGn downlinkPDU

Uplink GTP tunnel decapsulationDownlink GTP tunnel encapsulation

Generate original CDR

SFU module is Between SFU module is Between

every two boardsevery two boards

Uplink Data flow

Downlink Data flow:

SPULPU GTP tunnelLPU

Flow Looking on Boards

SGSNSGSN SPU LPUGTP tunnel LPU PDNPDN

PDNPDN SGSNSGSN


Uplink Data flow with Gi IPSec/GRE tunnel:

Downlink Data flow with Gi IPSec/GRE tunnel:

IPSec/GRE tunnel

SPU

GTP tunnelLPU

LPU

SPU

GTP tunnel LPU

IPSec/GRE tunnel

LPU

SGSNSGSN PDNPDN

PDNPDN SGSNSGSN

OAM Flow

LLPPUU

SS

LLPPUU

SS

SFUSFU


SRUSRU

SSPPUU

SSPPUU

LMT PCLMT PC

GGSN9811 Cabinet(NE80E)1. LCD module2. Fan subrack4. boards area8. Power module


GGSN9811 Board (NE80E)


Board Name Full Spelling

MPU Main Processing Unit

SPU Service Processing Unit

LPU Line Processing Unit

SFU Switching Fabric Unit

MPU Board

SRU

RUN

ALM

ACT

LIN

K A

CT

LIN

K A

CT

ET

H 1

ET

H 0

OFL

MPUMPU



AU

XC

ON

SO

LELI

NK

AC

T

ET

H 1


MPUMPU

HD2: for CDRHD2: for CDR

Summary

� The GGSN9811 has SRU, SFU, SPU and LPU board.

� SRU: OAM and routing management.

� SFU: switching.

� SPU: service handling.


� LPU: physical interface.

Thank youwww.huawei.comwww.huawei.com

Technology

Huawei GGSN 9811 hardware and software