OTA105102 OptiX OSN 2500 Hardware System Overview ISSUE1.0
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Transcript of OTA105102 OptiX OSN 2500 Hardware System Overview ISSUE1.0
-
Optical Network Curriculum
Development Section
ISSUE
OTA105102 OptiX OSN 2500
Hardware System Overview
1.0
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2
Confidential Information of Huawei.
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Objectives
Grasp the structure of the
equipment
Grasp the main function of
every mentioned board.
Grasp the signal flow and the
alarms
Upon completion of this course,
you will be able to:
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No Spreading without Permission. Security Level: Internal
Contents
Rack and Related Parts
Sub-rack
Service Boards
Auxiliary Parts
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4
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Equipment Overview OptiX OSN 9500
Backbone
OptiX OSN 3500 OptiX 10G
OptiX OSN 3500
OptiX OSN 2500
OptiX OSN 1500
OptiX OSN 2500OptiX OSN 1500
Aggregation
Access
GSM/CDMA/
WCDMAEthernet DDNPSTN ATM. . .
Position of the OptiX OSN 2500 in transport network
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Rack
Dimension of rack:
1.
2000mm(H)X600mm(W)X600mm(D)
can contain 2 sub-racks
2.
2200mm(H)X600mm(W)X600mm(D)
can contain 3 sub-racks
3.
2600mm(H)X600mm(W)X600mm(D)
can contain 4 sub-racks
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Power Box
NEG2(-)
INPUT
RTN2(+)RTN1(+) NEG1(-)
SW3/20ASW1/20A SW2/20A SW4/20ASW1/20A SW3/20ASW2/20A SW4/20A
1. Grounding STUD 2. PGND 3. RTN1(+)
4. RTN2(+) 5. NEG1(-) 6. NEG2(-)
7. Input cable terminal 8. Left output cable terminal 9.Right output cable terminal
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Rack
Meanings of the indicators on the cabinet top
Indicator Description Status
On Off
Red
indicator
Critical alarm
indicator
The current equipment has a
critical alarm, which is
accompanied by an audible alarm.
The current equipment
does not have any
critical alarm
Yellow
indicator
Major alarm
indicator
The current equipment has a major
alarm, which is not accompanied
by an audible alarm.
The current equipment
does not have any major
alarm
Orange
indicator
Minor alarm
indicator
The current equipment has a minor
alarm, which is not accompanied
by an audible alarm.
The current equipment
does not have any minor
alarm
Green
indicator
Power
indicator
The power supply for the current
equipment is normal (-38.4 ~ -72V).
Power supply of current
equipment is interrupted.
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Contents
Rack and Related Parts
Sub-rack
Service Boards
Auxiliary Parts
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OSN 2500 is STM-1/4 MSTP equipment and can be upgraded to an STM-16 system
High integration: CXL1/4/16
Sub-rack has 9 traffic slots which can be split
Sub-rack has the ability of adding/dropping tributary traffic. Single sub-rack can process 252 E1, 14 E4, 48 E3/DS3 signal
Can access different types of signals
for example E1/E3/DS3/E4/ STM-1(o/e)/FE/GE
Sub-rack
Size 460mm (H) 440mm (W) 295mm (D)
Weight 18kg
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Can be configured as 3
STM-16 ADMs
Support 120120 VC4
18.75Gand 9696 VC3 or 20162016 VC125Gcross connection
In the future it can be
smoothly be upgraded to
support 392392 VC3 or
80648064VC1220Gcross connection
Sub-rack
S
L
O
T
3
S
L
O
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2
S
L
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1
S
L
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4
Fiber routing panel
SLOT 22
PIU
SLOT 25
PIU
SLOT 23
FAN
SLOT 24
FAN
S
L
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17
S
L
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T
16
S
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15
S
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18
S
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8
2.5
G
S
L
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9
C
X
L
16
S
L
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T
10
C
X
L
16
S
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11
2.5
G
S
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12
2.5
G
S
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13
1.25
G
S
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14
S
A
P
S
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T
5
6
2
2
M
S
L
O
T
6
6
2
2
M
S
L
O
T
7
2.5
G
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System Overview
Cross-connect Unit
(High-order 120X120VC-4)
(Low-order 2016*2016 VC-12)
IU
IU
IU
IU
IU
IU
IU
IU
IU
IU
IU
IU
Timing
Unit
Auxiliary
interface unitSCC and OHP unit
Interface Unit Interface Unit
Management
interfaceAuxiliary interface
External sychronization
interface
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Contents
Rack and Related Parts
Sub-rack
Service Boards
Auxiliary Parts
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13
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Circuit board
Boards can be classified into the following types:
PDH unit
SDH unit
Ethernet unit
Line, Cross-connect, Timing and SCC unit
Auxiliary unit: Engineering Orderwire
Auxiliary interface unit
Power unit
Fan unit
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Circuit board
Limit factors for inserting boards:
Different access capabilities of different slots Example: SL16 in Slots 7,8
Processing boards can only be inserted in slots which have relation with Interface slots Example: PD1 only in Slots 6,7,8
Specific slots only for specific board Example: CXL only in Slots 9,10
Types of boards: 1. Processing 2. Interface
3. Processing + Interface
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Appearance of boards
1. Processing board (PQ1) 2. Interface board (D75S) 3. Optical interface board
(SL16)
4. CXL1/4/16 5. SAP 6. Front panel
7. E1/T1 interface board 8. Optical interface
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Contents
PDH Access Unit
SDH Access Unit
Ethernet Access Unit
Core Board
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PDH Access Unit
Principle Diagram and Signal Flow
Alarms and Performance Events
Indicators
Relationship with Other Boards
Functions, Features and Applications
Course Contents
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PDH Access Unit
Do you still remember these blocks?
Signal Flow
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PDH Access Unit
Boards Processing Functions Interface Boards
PQM 63 X E1/T1 2 X D75S, 2 X D12B, 2 X D12S
PQ1 63 X E1 2 X D75S, 2 X D12B, 2 X D12S
PD1 32 X E1 1 X D75S, 1 X D12B, 1 X D12S
PL3 3 X E3/DS3 1 X C34
PD3 6 X E3/DS3 1 X D34
SPQ4 4 X E4/STM-1 1 X MU04
TSB8 8 Interface Switching & Bridging Board
TSB4 4 Interface Switching & Bridging Board
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PDH Access Unit
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Applications
Supports 63 both E1 and T1 signals
Provides 120 balanced E1
interface and 100 balanced T1
interface.
PQM
PQ1
Supports 63 E1 signals
Provides 75 unbalanced interface
and 120 balanced interface.
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PDH Access Unit
Each PDH slot has
relation with two
interface slots.
Slots 5 has no relation with interface
slots, it is reserved for
E1/T1 processing
protection board (TPS).
Processing Interface
Board Slot Purpose Slot
PQ1
5 Protection NN
6
Working
1, 2
7 3, 4
12 15, 16
13 17, 18
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Functions
Maintenance Function
Tributary software loopback
Online pseudo-random code check function
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Major alarms
T- ALOS: No E1 signal received
Reasons:
Fault on E1 interface board
Fault on the E1 Cable
Fault on switch system
TU-AIS: Reasons:
1. Incorrect cross-
connect configuration
2. Fiber broken
TU-LOP: Reason:
Incorrect service configuration
Alarms
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LP-RDI: Remote defect indication
Reasons:
Alarms such as TU-AIS and
TU-LOP are detected by the
remote terminal
LP-SLM , LP-TIM: Reasons:
V5 or J2 mismatch
Minor alarms
LP-REI: Remote error indication
Reasons:
Bit errors are detected by
the remote terminal
Alarms
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Indicators
Indicator Color and status Description
Board
hardware
indicator-
STAT
On, green The board works normally.
On, red The board hardware fails, or the board
hardware is mismatched.
Off The board is not powered on.
Service
activation
indicator-
ACT
On, green
The service is activated. (In TPS
protection mode, the board is in
working status.)
Off
The service is not activated. (In TPS
protection mode, the board is in
protection status.)
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Indicators
Indicator Color and status Description
Board
software
indicator-
PROG
On, green
Upload of board software to FLASH or the
FPGA upload is normal, or the board software
initialization is normal.
On for 100ms and
off for 100ms
alternatively, green
Board software is being uploaded to FLASH or
FGPA
On for 300ms and
off for 300ms
alternatively, green
The board software is initializing, and is in BIOS
boot stage.
On, red
The board software in FLASH or the FPGA
configuration is lost, resulting in upload and
initialization failure.
Off No power supply.
Service
alarm
indicator-
SRV
On, green Service is normal, no service alarm occurs.
On, red Critical or major alarm occurs to service.
On, yellow Minor or remote alarm occurs to service.
Off No service configured or no power supply.
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PDH Access Unit
Relationship with other boards
With XCS unit:
Receives/sends VC4 signal from/to XCS unit board
Receives/sends clock signal
from/to XCS unit board
Communicates with
SCC unit via Lanswitch:
Reports its running information, Receives control command
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PDH Access Unit
Processes 3 E3/DS3 signals
Interface board is C34S
75 unbalanced interface
PL3
PD3
Processes 6 E3/DS3 signals
Interface board is D34S
75 unbalanced interface
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PDH Boards
Processing Interface
Slot Purpose Slot
6
Working
1
7 3
12 15
13 17
Processing: PL3
Interface: C34S (SMB)
Processing: PD3
Interface: D34S (SMB)
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PDH Access Unit
P_LOS: ( T_ALOS for PD1 ) No E3 signal received
Reasons:
1. Fault on E3 interface
board
2. Fault on the E3 Cable
3. Fault on switch system
P_AIS: (DN_E1_AIS and UP_E1_AIS for PD1) E3 signal alarm indication Reasons:
1. Transmission line faulty 2. Opposite NE outputs AIS signal.
B3_SD/B3_EXC: (BIP_SD/BIP_EXC for PD1)
Reasons:
BIP signal degraded or
excessive
Major Alarms
PL3/PD3 (only different points with E1 Processing
boards)
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PDH Access Unit
Performance Events
Performance event Description of performance B3CNT B3 check bit error counts
FEBECNT remote check bit error counts
TUPJCHIGH TU pointer positive justification counts
TUPJCLOW TU pointer negative justification counts
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PDH Access Unit
Processing: SPQ4
Interface: MU04
(SMB)
Processing Interface
Slot Purpose Slot
6 Working
1
7 3
Boards Slot Position
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Contents
PDH Access Unit
SDH Access Unit
Ethernet Access Unit
Core Board
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SDH Access Unit
Boards Function
SL16 1 X STM-16
SLQ4 4 X STM-4
SLD4 2 X STM-4
SL4 1 X STM-4
SLQ1 4 X STM-1
SL1 1 X STM-1
SEP1 8 X STM-1 Processing
Interface Boards Function
EU08 8 X STM-1 Electrical
OU08 8 X STM-1 Optical
EU04 4 X STM-1 Electrical
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SDH Access Unit
Boards Slot Position Board Slot
SL16
7, 8, 11, 12 SLQ4
SLD4 7, 8, 11, 12, 13
SL4
5, 6, 7, 8,
11, 12, 13 SLQ1
SL1
SEP1
(Depending on
interface used)
5, 6, 7, 8,
11, 12, 13
Interface
Board
Slot
EU08 1,3,
15,17 OU08
EU04
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SDH Access Unit
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SDH Access Unit
Course Contents
Principle Diagram and Signal Flow
Alarms and Performance Events
Indicators
Relationship with Other Boards
Functions, Features and Applications
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SDH Access Unit
Do you still remember these blocks?
Signal Flow
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SDH Access Unit
Various optical modules for different distances
J1 Huawei SBS C2 according to the service
Software VC4 loopback
Applications
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SDH Access Unit
Critical Alarms
Alarms and Performance Events
R-LOS: Loss of signal
Reasons:
1. Light received is too dim
2. Receiver is failed
R-LOF: Loss of frame
Reasons:
1. Clock of the upstream
station is failed
2. To many bit errors
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SDH Access Unit
AU-AIS: Reason:
Service is broken at
VC4 level
MS-AIS: Reason:
Caused by critical
alarm
AU-LOP: Reasons:
1. Hardware failure
2. Incorrect service
configuration
Major Alarms
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SDH Access Unit
HP-TIM , HP-SLM: Reasons:
J1 mismatch
C2 mismatch
B1, B2, B3-EXC: Bit error excess
Reasons:
1. Optical path problem
2. Hardware failure
Minor Alarms
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SDH Access Unit
MS-RDI: Multiplex Section Remote
End Defect Indication
Reasons:
Remote end detects MS-AIS
Minor Alarms
HP-RDI: High-order Path Remote End
Defect Indication
Reasons:
Remote end detects HP alarms
MS-REI: Multiplex Section Remote
End Error Indication
Reasons:
Remote end detects B2 errors
HP-REI: High-order Path Remote End
Error Indication
Reasons:
Remote end detects B3 errors
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SDH Access Unit
Performance event
Description of performance
B1-BBE B1 check bit error counts
B2-BBE B2 check bit error counts
B3-BBE B3 check bit error counts
AUPJCHIGH AU pointer positive justification counts
AUPJCLOW AU pointer negative justification counts
Performance Events
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SDH Access Unit
Indicator status description
Indicator Color and status Description
Board
hardware
indicator-
STAT
On, green The board works normally.
On, red The board hardware fails.
On for 100ms and off
for 100ms alternatively,
red
The board hardware is
mismatched.
Off The board is not powered on,
or the service is not configured.
Service
activation
indicator-
ACT
On, green The service is activated.
Off The service is not activated.
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SDH Access Unit
Indicator status description
Indicator Color and status Description
Board
software
indicator-
PROG
On, green Upload of board software to FLASH or the
FPGA upload is normal, or the board
software initialization is normal.
On for 100ms and off for
100ms alternatively, green
Board software is being uploaded to
FLASH or FGPA
On for 300ms and off for
300ms alternatively, green
The board software is initializing, and is in
BIOS boot stage.
On, red The board software in FLASH or the FPGA
configuration is lost, resulting in upload and
initialization failure.
Off No power supply.
Service
alarm
indicator-
SRV
On, green Service is normal, no service alarm occurs.
On, red Critical or major alarm occurs to service.
On, yellow Minor or remote alarm occurs to service.
Off No service configured or no power supply.
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SDH Access Unit
With SCC board
DCC and E1 ~ E2
Reports its running information,
Receives control command
With XCS board
VC4 service signal
Relationship with other board
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SDH Access Unit
With line boards in dual slot
Passes through D1~D3, E1~E2(only when SCC is not function)
Passes through K1, K2(only when MSP exists)
which slots are dual slots? S
L
O
T
1
S
L
O
T
2
S
L
O
T
3
S
L
O
T
4
S
L
O
T
1
5
S
L
O
T
1
6
S
L
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1
7
S
L
O
T
1
8
S
L
O
T
5
S
L
O
T
6
S
L
O
T
7
S
L
O
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8
S
L
O
T
11
S
L
O
T
12
S
L
O
T
13
S
L
O
T
14
S
A
P
S
L
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9
C
X
L
16
S
L
O
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10
C
X
L
16
Fiber Routing
PIU
SLOT22
FAN
SLOT23
FAN
SLOT24
PIU
SLOT25
9-10 8-11 7-12 6-13
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Contents
PDH Interface Unit
SDH Interface Unit
Ethernet Interface Unit
Core Board
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Ethernet Unit
Unit name Board Full name Slot available
Ethernet
interface
unit
EGS2
2-port Gigabit
Ethernet optical
interface board
with Lanswitch 5, 6 ,7, 8
11, 12, 13
EFS4
4-port Fast
Ethernet
processing board
with Lanswitch
EFS0
Fast Ethernet
processing board
with Lanswitch
6, 7
12, 13
Interface Function Slot
ETF8 8 x 10/100M Ethernet
twisted pair interface
1,2,3,4,15,
16,17,18
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Ethernet interface Unit
This section
will be
introduced in
another course
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Contents
PDH Interface Unit
SDH Interface Unit
Ethernet Interface Unit
Core Board
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Core board
Core board is integrated from
Line, cross-connect, Timing and SCC unit.
Board Full name Slot
CXL16 STM-16 Optical interface, System control, Cross-
connect (timing) board
9,10 CXL4 STM-4 Optical interface, System control, Cross-
connect (timing) board
CXL1 STM-1 Optical interface, System control, Cross-
connect (timing) board
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Core board
STM-16 SDH
processing unit
Cross connect unit
System control and
communication unit
Timing unit
Front panel Backplane
Principle block diagram of CXL16
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Core board
We will discuss about the four parts of the board: Cross-connect, Clock, SCC and Line unit .
Principle Diagram and Signal Flow Alarms and Performance Events Indicators Relationship with Other Boards Functions, Features and Applications
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Core board
Cross Connection and Clock unit
Principle block diagram of cross connection and unit.
5G
lower-order
cross-connect
matrix
18.75G
higher-order
cross-connect
matrix
Timing
unit
Control and
communication unit
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Core board
Cross Connection and Clock Unit
Functions and Features
Applications
Cross-connection:
VC12, VC3 and VC4
AU4-4C, AU4-8C, AU4-16C, and AU4-64C
Network Protection Control:
SNCP, MSP
Controlling TPS
Synchronous timing
1+1 hot backup mode
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Core board Cross Connection Unit
Critical alarm
Alarms and Performance Events
TEMP-OVER
Reason:
Operation temperature
over limit
PS
Reason:
Multiplex section protection
has been taking place
Major alarm
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Core cross connection Unit
Relationship with other boards
With SCC unit
Gets control commands
Sends running information
With access boards
Gets/sends VC4 signals
Gets SNCP information
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Core board
Clock Unit
In master/slave mode,
master NE uses external clock or
internal
clock, and slave NEs trace the master NE
Synchronization modes (of system)
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Core board
Clock Unit
Working modes of clock unit
Normal
Timing signals is ok
Holdover
Frequency information
stored, holding for 24h
Free-run
Internal clock
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Core board
Clock Unit
Functions and Features
1. Generates system timing signals. Traces 2
channels of external timing signals and timing
signals from SDH interface.
2. Provides 2 channels of external timing signals.
The interfaces can be set as 2MHz or 2Mbit/s.
3. Processes SSM and clock ID.
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Major alarms
Alarms and Performance Events
EXTSYNLOS Reason:
Loss of external
synchronization source
LTI Reason:
Loss of all synchronization
sources
S1-SYN-CHANGE Reason:
Synchronization source
switches under S1 byte mode
Critical alarm
Core board
Clock Unit
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SYNC-LOS Reasons:
Loss of synchronization
source of higher class
SYN-BAD Reasons:
Deterioration of the
synchronization source
Minor alarms
Core board
Clock Unit
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Processing STM-1/4/16 signal
Various optical modules for different distances
J1 Huawei SBS C2 according to the service
Software VC4 loopback
In the term of applications and function, the line unit of
CXL1/4/16 is completely same with other SDH board.
For example: Line unit of CXL16=SL16
Core board
Line Unit
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Core board
SCC unit
Functions:
SEMF:
Manages local equipment
MCF:
1. Communicates with other NEs by D1-D3
2. Communicates with NM through OAM interface
Issuing command
Collecting alarm and performance of other board
Providing orderwire phone and other data interfaces
communication
Supporting 1+1 hot backup protection
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Software Function
BIOS
Host Software
Boots the system,
loads and upgrades host software
Self-checks the SCC hardware
DCC communication
Accomplishes real time supervision,
maintenance and management
Core board
SCC unit
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Applications
ID is the only identification for an NE
ID is configured in range of 1 ~ 49136 with software
The default value of ID is 0 x BFF0 (49136)
SCC Board
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No Spreading without Permission. Security Level: Internal
MDB (like RAM in PC)
In dynamic RAM
Automatically saves the current data
If power fails, the data in MDB will be lost
DRDB (like HD in PC)
Automatically saves the successfully verified data
Saves the data in flash RAM
The battery provides power
FDB0, FDB1 (like floppy disk in PC)
Manually saves the data
Enduringly saves data and does not need battery
Four databases on the SCC:
MDB
DRDB
issued data
verify
Board
running
FDB0
FDB1
manual save
Installing
success
fail
Core board
SCC unit
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Modem Connection
Core board
SCC unit
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No Spreading without Permission. Security Level: Internal
NE D
NE A
NE B
NE C
DCN
ROUTER
NM Terminal ROUTER
WAN Connection
Core board
SCC unit
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No Spreading without Permission. Security Level: Internal
What information will be reported to SCC
from an SDH board?
Why SCC board needs timing signals?
Relationship with other boards
Core board
SCC unit
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Indicators
Indicator Color and status Description
Board
hardware
indicator -
STAT
On, green The board works normally.
On, red The board hardware fails.
On for 100ms and
off for 100ms
alternatively, red
The board hardware is
mismatched.
Off The board is not powered
on, or service is not
configured.
Service
activation
indicator of
cross-connect
unit - ACTX
On, green The cross-connect unit is in
active status.
Off The cross-connect unit is in
standby status.
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Indicators
Indicator Color and status Description
Service activation
indicator of system
control &
communication unit
ACTC
On, green The system control & communication unit is in
active status.
Off The system control & communication unit is in
standby status.
Board software
indicator - PROG
On, green Upload of board software to FLASH or the
FPGA upload is normal, or the board software
initialization is normal.
On for 100ms and
off for 100ms
alternatively, green
Board software is being uploaded to FLASH or
FGPA
On for 300ms and
off for 300ms
alternatively, green
The board software is initializing, and is in
BIOS boot stage.
On, red The board software in FLASH or the FPGA
configuration is lost, resulting in upload and
initialization failure.
Off No power supply.
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Core board
Indicator Color and status Description
Service alarm
indicator of cross-
connect unit -
SRVX
On, green Service operates normally on the
cross-connect unit.
On, red Switching (e.g., TPS) occurs to the
service on the cross-connect unit.
Service alarm
indicator of line
unit - SRVL
On, green Service operates normally on the line
unit, and no service alarm occurs.
On, red Critical or major alarm occurs to the
line service.
On, yellow Minor or remote alarm occurs to the
line service.
Off The line service is not configured or
no power supply.
ALMC On, yellow Alarm is cut off permanently.
Off Alarm is normally provided.
Indicator description of CXL1, CXL4 and CXL16(3)
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Contents
Rack and Related Parts
Sub-rack
Circuit Boards
Auxiliary Parts
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Auxiliary parts
Unit name Board Full name Slot
System Auxiliary
Process SAP
System Auxiliary Process
board 14
Signal Extended
Interface SEI
Signal Extended Interface
board No
Power unit PIU Power interface unit 22, 25
Fan unit FAN Fan control unit 23, 24
Other functional unit AFB Backplane No
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Auxiliary Parts
SAP
SEI
PIU
FAN
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No Spreading without Permission. Security Level: Internal
SAP Board
Functions of SAP: Lanswitch Function for the other boards ETH port for NMS connection COM port for debugging Processes E1, E2 & F1 bytes Processes S1 ~ S4 Processes subnet outgoing audio signal Monitors 2 X -48V power supply Powers Rack indicators Back up power supply 3.3V, 100W for each board
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SAP board
Indicator Color and status Description
Board
hardware
indicator -
STAT
On, green The board works normally.
On, red The board hardware fails.
On for 100ms and off for
100ms alternatively, red
The board hardware is mismatched.
Off The board is not power on.
Board
software
indicator -
PROG
On, green Upload of board software to FLASH or the
FPGA upload is normal, or the board
software initialization is normal.
On for 100ms and off for
100ms alternatively, green
Board software is being uploaded to
FLASH or FGPA
On for 300ms and off for
300ms alternatively, green
The board software is initializing, and is in
BIOS boot stage.
On, red The board software in FLASH or the FPGA
configuration is lost, resulting in upload and
initialization failure.
Off No power supply.
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SEI board
Front panel of SEI
Function: SEI provides the extent interfaces:
F & f interface
OAM interface
Orderwire interface
Clock input/output interface
F1 interface, etc.
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SEI Board No. Name Interface No. Name Interface
1 ALMO1 For 4-channel Boolean outputs 2 ALMI1 For 4-channel Boolean inputs
3 ALMO2 For 4-channel Boolean output concatenation
4 ALMI2 For 4-channel Boolean inputs
5 LAMP1 For four cabinet alarm indicator outputs 6 S1 Serial 1
7 LAMP2 For four cabinet alarm indicator input concatenation
8 S2 Serial 2
9 OAM OAM 10 S3 Serial 3
11 F1 F1 12 S4 Serial 4
13 F & f F & f 14 V1 Subnet outgoing audio interface
15 PHONE Orderwire interface 16 V2 Subnet outgoing audio interface
17 CLK1 120 clock 18 Reserved
19 CLK2 120 clock 20 Reserved
21 CLKO1 75 clock output 1 22 CLKO2 75 clock output 2
23 CLKI1 75 clock input 1 24 CLKI2 75 clock input 2
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PIU board
PIU is the power interface board in Slot 22 and 25
Functions: Power access Lightening protection and filtering
PIU front panel
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FAN
Functions and features:
A single sub rack needs two fan boxes Fan control board Fan speed adjustment Fan failure detection Report failures and alarms
Protection:
1+1 hot backup
Alarm:
FAN_FAIL: fan failure
BDSTATUS: board is not on line
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FAN
The appearance of Modular fan
Indicator description of the fan box
Indicator Color Description
Operation
status
indicator-
STATE
On,
green
The fan operates
normally.
On, red
The fan, fan power
board or FAN is
abnormal.
On,
yellow
The fan is turned off
due to low
temperature.
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87
Confidential Information of Huawei.
No Spreading without Permission. Security Level: Internal
Summary
Rack and Related Parts
Sub-rack
Circuit Boards
Auxiliary Parts
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88
Confidential Information of Huawei.
No Spreading without Permission. Security Level: Internal