huawei ggsn 9811 hardware and software
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Course Code Product Product Version Course Version ISSUE
OWD908102 GGSN V900R008C01 ISSUE1.01
Developer/Modifier Time Approver New/Update
Don’t Print This Page
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
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page2
Objectives
� Upon completion of this course, you will be able to:
� Describe GGSN9811 hardware structure
� Describe GGSN9811 software structure
� Describe the board function
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page3
� 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
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page4
4. Service Flow of GGSN9811
Contents
1. Background Knowledge of GGSN9811
2. GGSN9811 Hardware and Software (NE40E Platform)
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page5
3. GGSN9811 Hardware and Software (NE80E Platform)
GGSN Location
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page6
Contents
1. Background Knowledge of GGSN9811
2. GGSN9811 Hardware and Software (NE40E Platform)
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page7
3. GGSN9811 Hardware and Software (NE80E Platform)
Contents
2. GGSN9811 Hardware and Software (NE40E Platform)
2.1 System Structure of GGSN9811
2.2 Cable Connection of GGSN9811
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page8
2.2 Cable Connection of GGSN9811
2.3 Service Flow of GGSN9811
Contents
2.1 System Structure of GGSN9811
2.1.1 Hardware Introduction
2.1.2 Hardware Logical Structure
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page9
2.1.3 Software Logical Structure
Cabinet: N68E-22
1
3
4
5
2
6
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page10
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
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page11
Filler panel (1 U)
LAN Switch cabling frame (1 U)
High capacity fiber rack (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
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page12
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.
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page13
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
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page14
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
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page15
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
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page16
� 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
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page17
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
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page18
High capacity fiber rack (1 U)
Filler panel (1 U)
Filler panel (1 U)
LAN Switch cabling frame (1 U)
LAN Switch cabling frame (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(-)
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page19
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
2.1 System Structure of GGSN9811
2.1.1 Hardware Introduction
2.1.2 Hardware Logical Structure
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page20
2.1.3 Software Logical Structure
Hardware Architecture
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Internal Connection
� The GGSN9811 subrack contains two types of data
exchange planes:
� Ethernet management
� For operation and maintenance
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page22
� 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.
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page23
Mbit/s.
Service Data Exchange Planes
� The two SFU modules embedded in the two SRUs form
four exchange planes with the two SFUs.
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page24
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
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page25
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.
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page26
speed.
Contents
2.1 System Structure of GGSN9811
2.1.1 Hardware Introduction
2.1.2 Hardware Logical Structure
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page27
2.1.3 Software Logical Structure
Logical Structure
� The logical structure of
GGSN9811 as follow:
� AM(Access Management)
� SM(Service Management)
� CM(Charging Management)
OM
AM
CM
LMT
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� 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
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page29
Platform Service System
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Access Management System
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page31
Service Management System
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page32
Charging Management System
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page33
Contents
2. GGSN9811 Hardware and Software (NE40E Platform)
2.1 System Structure of GGSN9811
2.2 Cable Connection of GGSN9811
2.3 Service Flow of GGSN9811
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page34
2.3 Service Flow of GGSN9811
Contents
2.2 Cable Connection of GGSN9811
2.2.1 Console Cable Connection
2.2.2 Service Cable Connection
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page35
Console Cable Connection
RTN(+)
NEG(-)
COM1COM2
12345678910
A
12345678910
B
RTN(+)
NEG(-)
Power Distribution Box
1 2 8
1
X1 X2
1
8
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page36
SRU SRU
Subrack
Monitor Serial Cable Monitor Serial Cable for the Power for the Power Distribution Box Distribution Box
Contents
2.2 Cable Connection of GGSN9811
2.2.1 Console Cable Connection
2.2.2 Service Cable Connection
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page37
Ethernet Cable Connection
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page38
Contents
2. GGSN9811 Hardware and Software (NE40E Platform)
2.1 System Structure of GGSN9811
2.2 Cable Connection of GGSN9811
2.3 Service Flow of GGSN9811
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page39
2.3 Service Flow of GGSN9811
GGSN Main Processing Procedure
1. Create PDP Context Req
SRU
4.Create user connection
Route distribute
Route distribute
Buffer CDR
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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
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page41
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
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page42
SRUSRU
SSPPUU
SSPPUU
LMT PCLMT PC
GGSN9811 Cabinet(NE80E)1. LCD module2. Fan subrack4. boards area8. Power module
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page43
GGSN9811 Board (NE80E)
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page44
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
HD1: for BAMHD1: for BAM
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page45
AU
XC
ON
SO
LELI
NK
AC
T
ET
H 1
HD1: for BAMHD1: for BAM
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.
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page46
� LPU: physical interface.
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