H3C s5820x series User manual

H3C S5820X Series Ethernet Switches
Installation Manual
New H3C Technologies Co., Ltd.
http://www.h3c.com.hk
Document version: 6
W
110-20170718

Copyright © 2009-2017, New H3C Technologies Co., Ltd. and its licensors
All rights reserved
No part of this manual may be reproduced or transmitted in any form or by any means without prior
written consent of New H3C Technologies Co., Ltd.
Trademarks
H3C, , H3CS, H3CIE, H3CNE, Aolynk, , H3Care, , IRF, NetPilot, Netflow,
SecEngine, SecPath, SecCenter, SecBlade, Comware, ITCMM and HUASAN are trademarks of New
H3C Technologies Co., Ltd.
All other trademarks that may be mentioned in this manual are the property of their respective owners
Notice
The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute the warranty of any kind, express or implied.
Environmental protection
This product has been designed to comply with the environmental protection requirements. The storage,
use, and disposal of this product must meet the applicable national laws and regulations.

Preface
H3C S5820X Series Ethernet Switches Installation Manual describes the appearance, installation,
power-on, maintenance, and troubleshooting of the H3C S5820X series Ethernet switches.
This preface includes:
•Audience.
•Conventions.
•Obtaining documentation.
•Technical support
•Documentation feedback.
Audience
This documentation is intended for:
•Network planners.
•Field technical support and servicing engineers.
•Network administrators working with the S5820X series.
Conventions
The following information describes the conventions used in the documentation.
Command conventions
Convention Descri
p
tion
Boldface Bold text represents commands and keywords that you enter literally as shown.
Italic Italic text represents arguments that you replace with actual values.
[ ] Square brackets enclose syntax choices (keywords or arguments) that are optional.
{ x | y | ... }
Braces enclose a set of required syntax choices separated by vertical bars, from which
you select one.
[ x | y | ... ]
Square brackets enclose a set of optional syntax choices separated by vertical bars, from
which you select one or none.
{ x | y | ... } *
Asterisk marked braces enclose a set of required syntax choices separated by vertical
bars, from which you select a minimum of one.
[ x | y | ... ] *
Asterisk marked square brackets enclose optional syntax choices separated by vertical
bars, from which you select one choice, multiple choices, or none.
&<1-n> The argument or keyword and argument combination before the ampersand (&) sign can
be entered 1 to n times.
# A line that starts with a pound (#) sign is comments.

GUI conventions
Convention Descri
p
tion
Boldface Window names, button names, field names, and menu items are in Boldface. For
example, the New User window opens; click OK.
> Multi-level menus are separated by angle brackets. For example, File > Create > Folder.
Symbols
Convention Descri
p
tion
WARNING An alert that calls attention to important information that if not understood or followed can
result in personal injury.
CAUTION An alert that calls attention to important information that if not understood or followed can
result in data loss, data corruption, or damage to hardware or software.
IMPORTANT An alert that calls attention to essential information.
NOTE An alert that contains additional or supplementary information.
TIP An alert that provides helpful information.
Network topology icons
Represents a generic network device, such as a router, switch, or firewall.
Represents a routing-capable device, such as a router or Layer 3 switch.
Represents a generic switch, such as a Layer 2 or Layer 3 switch, or a router that supports
Layer 2 forwarding and other Layer 2 features.
Represents an access controller, a unified wired-WLAN module, or the access controller
engine on a unified wired-WLAN switch.
Represents an access point.
Wireless terminator unit.
Wireless terminator.
Represents a mesh access point.
Represents omnidirectional signals.
Represents directional signals.
T
T
T
T




Represents a security product, such as a firewall, UTM, multiservice security gateway, or
load balancing device.
Represents a security module, such as a firewall, load balancing, NetStream, SSL VPN,
IPS, or ACG module.
Examples provided in this document
Examples in this document might use devices that differ from your device in hardware model,
configuration, or software version. It is normal that the port numbers, sample output, screenshots, and
other information in the examples differ from what you have on your device.
Obtaining documentation
To access the most up-to-date H3C product documentation, go to the H3C website
at http://www.h3c.com.hk.
To obtain information about installation, configuration, and maintenance, click
http://www.h3c.com.hk/Technical_Documents
To obtain software version information such as release notes, click
http://www.h3c.com.hk/Software_Download
Technical support
servic[email protected]
http://www.h3c.com.hk
Documentation feedback
You can email your comments about product documentation to [e-mail].
We appreciate your comments.


i
Contents
Product overview·························································································································································· 1
About the H3C S5820X Switch Series···························································································································1
Switch models and technical specifications ···················································································································1
Hardware compatibility matrix········································································································································2
S5820X-26S panel views ················································································································································4
Front panel ································································································································································4
Rear panel·································································································································································4
Left side panel···························································································································································5
S5820X-28S panel views ················································································································································5
Front panel ································································································································································5
Rear panel·································································································································································6
S5820X-28C panel views················································································································································6
Front panel ································································································································································6
Rear panel·································································································································································7
Ports ····················································································································································································7
Console port ·····························································································································································7
Management Ethernet port······································································································································8
USB port ····································································································································································8
10/100/1000Base-T Ethernet port ·······················································································································8
SFP+ port···································································································································································9
LEDs ················································································································································································· 10
System status LED··················································································································································· 10
Power module status LEDs ···································································································································· 11
Seven-segment LED················································································································································ 11
Port mode LED························································································································································ 12
10/100/1000Base-T Ethernet port LED············································································································· 12
SFP+ port LED ························································································································································ 13
Management Ethernet port LEDs·························································································································· 13
OAP card status LED ············································································································································· 14
Hot swappable power modules···································································································································· 14
Hot swappable fan trays and cooling system············································································································· 16
Fan trays································································································································································· 16
Cooling system ······················································································································································ 17
Interface cards································································································································································ 22
OAP cards ······································································································································································ 23
Preparing for installation ···········································································································································24
Safety recommendations ··············································································································································· 24
Examining the installation site ······································································································································ 24
Temperature/humidity ·········································································································································· 24
Cleanness······························································································································································· 25
EMI·········································································································································································· 25
Laser safety····························································································································································· 25
Installation tools······························································································································································ 26
Installing the switch····················································································································································27
Installing the switch in a 19-inch rack·························································································································· 28
Installation methods··············································································································································· 28
Mounting bracket and cable management bracket kits···················································································· 29
Rack mounting rail kit ··········································································································································· 30

ii
Attaching the mounting brackets, chassis rails, and grounding cable to the switch chassis (for the
S5820X-26S) ························································································································································· 30
Attaching the mounting brackets to the switch chassis (for the S5820X-28S and S5820X-28C) ················ 33
Rack-mounting the S5820X-26S switch ·············································································································· 34
Rack-mounting the S5820X-28S or S5820X-28C switch·················································································· 37
Mounting the switch on a workbench·························································································································· 38
Grounding the switch ···················································································································································· 39
Grounding the switch with a grounding strip····································································································· 39
Grounding the switch in other grounding environment····················································································· 42
Installing/Removing a fan tray ····································································································································· 43
Installing a fan tray ··············································································································································· 43
Removing a fan tray·············································································································································· 44
Installing/Removing a power module·························································································································· 45
Installing/Removing a power module (for the S5820X-26S) ··········································································· 45
Installing/Removing a power module (for the S5820X-28S and the S5820X-28C) ····································· 48
Connecting the power cord ·········································································································································· 49
Connecting the PSR300-12A/PSR300-12A1/PSR300-12A2·········································································· 49
Connecting the PSR300-12D1/PSR300-12D2 to a –48 VDC power source ················································ 50
Connecting the PSR300-12D1/PSR300-12D2 to a –54 VDC output RPS······················································ 51
Connecting the LSVM1AC650/LSVM1AC300································································································· 51
Connecting the LSVM1DC650/LSVM1DC300 ································································································· 52
Installing/Removing an interface card························································································································· 52
Installing an interface card··································································································································· 52
Removing an interface card ································································································································· 53
Installing/Removing an OAP card ······························································································································· 54
Installing an OAP card in the OAP card slot ····································································································· 54
Removing the card in the OAP card slot ············································································································ 55
Installing an OAP card in an expansion interface card slot············································································· 56
Removing the OAP card in an expansion interface card slot ·········································································· 56
Verifying the installation················································································································································ 56
Powering on the switch for the first time···················································································································58
Setting up the configuration environment···················································································································· 58
Connecting the console cable ······································································································································ 58
Console cable························································································································································ 58
Connection procedure ·········································································································································· 58
Setting terminal parameters ·········································································································································· 59
Powering on the switch·················································································································································· 62
Setting up an IRF fabric ·············································································································································63
IRF fabric setup flowchart·············································································································································· 63
Planning IRF fabric setup··············································································································································· 64
Planning IRF fabric size and the installation site································································································ 64
Identifying the master switch and planning IRF member IDs ············································································ 64
Planning IRF topology and connections ·············································································································· 65
Identifying physical IRF ports on the member switches ····················································································· 66
Planning the cabling scheme ······························································································································· 66
Configuring basic IRF settings······································································································································· 69
Connecting the physical IRF ports ································································································································ 70
Accessing the IRF fabric to verify the configuration ··································································································· 70
Maintenance and troubleshooting····························································································································71
Password loss ································································································································································· 71
Console login password loss ······························································································································· 71
Boot ROM password loss ····································································································································· 71
Power module failure····················································································································································· 71

iii
Troubleshooting the PSR300-12A series/PSR300-12D series·········································································· 72
Troubleshooting the LSVM1AC650/LSVM1DC650/ LSVM1AC300/LSVM1DC300·································· 72
OAP card failure ···························································································································································· 72
Failure of the OAP card in the OAP card slot···································································································· 72
Failure of the OAP card in an expansion interface card slot ··········································································· 73
Fan tray failure ······························································································································································· 73
Configuration terminal problems·································································································································· 74
Index ···········································································································································································75

1
Product overview
About the H3C S5820X Switch Series
The H3C S5820X Switch Series is a line of 10-Gigabit Ethernet switching products intended for the
distribution and access layers of enterprise or metropolitan area networks. You can also use this switch
series to offer access to the server farms in a data center.
The H3C S5820X Switch Series offers the following benefits:
•10-Gigabit ports and a wide range of features, including the routing features, IPv4 and IPv6 dual
stack, and H3C cluster management for streamlined network management.
•Innovative Intelligent Resilient Framework (IRF) technology, which can virtualize connected S5820X
switches into one virtual switch for higher availability, scalability and resiliency, and manageability.
•Support for the H3C Open Application Architecture (OAA). You can install customized open
application platform (OAP) cards in your S5820X switch to provide value-added services including
firewall, anti-virus, IPS, and wireless access control.
Switch models and technical specifications
The H3C S5820X Switch Series includes the following models:
•S5820X-26S
•S5820X-28S
•S5820X-28C
Table 1 H3C S5820X Switch Series technical specifications
Item S5820X-26S
S5820X-28S S5820X-28C
Dimensions (H × W × D)
43.6 × 440 × 660 mm
(1.72 × 17.32 × 25.98
in)
43.6 × 440 × 427
mm (1.72 × 17.32 ×
16.8 in)
86 × 440 × 467 mm
(3.39 × 17.32 × 18.39
in)
Weight 11.2 kg (24.69 lb) 8.5 kg (18.74 lb) 17 kg (37.48 lb)
Console ports 1 1 1
Management Ethernet ports 1 1 N/A
USB ports 1 1 1
10/100/1000Base-T Ethernet
ports 2 4 4
SFP+ ports 24 24 14
Expansion interface card slots N/A N/A 2, front panel
OAP card slots N/A N/A 1, rear panel
Fan tray slots 2, rear panel 1, rear panel 1, rear panel
Power module slots 2, rear panel 2, rear panel 2, rear panel

2
Item S5820X-26S S5820X-28S S5820X-28C
AC-input voltage Rated voltage: 100 VAC to 240 VAC @ 50 or 60 Hz
Max voltage: 90 VAC to 264 VAC @ 47 or 63 Hz
DC-input voltage
Rated voltage:
–40 VDC to –60
VDC
Max voltage:
–40 VDC to –72
VDC
Rated voltage:
–48 VDC to –60 VDC
Max voltage:
–40.5 VDC to –72 VDC
Rated voltage:
–48 VDC to –60 VDC
Max voltage:
–40.5 VDC to –72 VDC
Minimum power consumption 135 W AC: 128 W
DC: 124 W
AC: 105 W
DC: 103 W
Maximum power consumption AC: 205 W
DC: 205 W
AC: 185 W
DC: 176 W
AC: 245 W
DC: 241 W
Operating temperature 0ºC to 45ºC (32°F to 113°F)
Operating humidity 10% to 90%, noncondensing
Hardware compatibility matrix
Interface cards, OAP cards, PoE modules, swappable fan trays, power modules, and RPSs must be
purchased separately. When you purchase or install these components, check that they are compatible
with the switch.
Table 2 Pluggable components compatibility matrix
Cards/modules S5820X-26S
S5820X-28S S5820X-28C
Hot swa
pp
able
p
ower module o
p
tions
LSVM1AC650 Yes No No
LSVM1DC650 Yes No No
LSVM1AC300 Yes No No
LSVM1DC300 Yes No No
PSR300-12A No Yes Yes
PSR300-12A1 No Yes Yes
PSR300-12A2 No Yes Yes
PSR300-12D1 No Yes Yes
PSR300-12D2 No Yes Yes
Fan tray options
LSW1BFAN No Yes No
LSW1FAN No No Yes
LSWM1FANSCB Yes No No
LSWM1FANSC Yes No No

3
Cards/modules S5820X-26S S5820X-28S S5820X-28C
Interface card options
LSW1SP4P0 No No Yes
LSW1SP2P0 No No Yes
LSW1XGT2P0 No No Yes
LSW1XGT4P0 No No Yes
OAP card options
LSWM1IPS10IPS No No Yes
LSWM1FW10 No No Yes
LSWM1WCM10 No No Yes
LSWM1WCM20 No No Yes
NOTE:
You install the LSWM1WCM20 card in the expansion interface card slot and all other OAP cards in the OAP
card slot.
NOTE:
For more information about these cards and modules, see the following sections:
•"Hot swappable power modules"
•"Hot swappable fan trays and cooling system"
•"Interface cards"
•"OAP cards"
Table 3 RPS compatibility matrix
RPS S5820X-26S
S5820X-28S S5820X-28C
RPS800-A No Yes Yes
RPS1000-A3 No Yes Yes
RPS1600-A No Yes Yes

4
S5820X-26S panel views
Front panel
Figure 1 S5820X-26S front panel
(1) SFP+ port (2) SFP+ port LED
(3) 10/100/1000Base-T auto-sensing Ethernet port (4) 10/100/1000Base-T Ethernet port LED
(5) Mana
g
ement Ethernet port (6) Console port
(7) USB port (8) Port LED mode switchin
g
button
(9) System status LED (SYS) (10) Port mode LED
(11) Seven-se
g
ment LED (12) ACT LED for the mana
g
ement Ethernet port
(13) LINK LED for the mana
g
ement Ethernet port
Rear panel
Figure 2 S5820X-26S rear panel
(1) Power module slot 1 (2) Power module slot 2
(3) Fan tray slot 1 (4) Fan tray slot 2
(5) Groundin
g
screw (auxiliary
g
roundin
g
point 2)
NOTE:
•The S5820X-26S switch comes with the power module slots empty and the power filler modules as
accessories. You can install one or two power modules for your S5820X-26S switch as needed. In this
figure, two LSVM1AC650 AC power modules are installed.
•The switch also comes with the fan tray slots empty. You must install two fan trays for the S5820X-26S fo
r
adequate heat dissipation, and their models must be the same. In this figure, two LSWM1FANSC fan
trays are installed.

5
Left side panel
Figure 3 S5820X-26S left side panel
(1) Primary
g
roundin
g
point (2) Auxiliary
g
roundin
g
point 1
S5820X-28S panel views
Front panel
Figure 4 S5820X-28S front panel
(1) SFP+ port (2) SFP+ port LED
(3) 10/100/1000Base-T auto-sensin
g
Ethernet port (4) 10/100/1000Base-T Ethernet port LED
(5) Management Ethernet port (6) Console port
(7) USB port (8) Seven-se
g
ment LED
(9) Port mode LED (10) System status LED (SYS)
(11) Power supply 1 status LED (PWR1) (12) Power supply 2 status LED (PWR2)
(13) Port LED mode switchin
g
button (14)
A
CT LED for the mana
g
ement Ethernet port
(15) LINK LED for the mana
g
ement Ethernet port
NOTE:
•The SFP+ ports are numbered from left to right and from top to bottom, with you facing the front panel.
The first top left SFP+ port is numbered 1, the first bottom left SFP+ port is numbered 2, the second top
left port is numbered 3, and so on.
•The 10/100/1000Base-T auto-sensing Ethernet ports, from left to right, are numbered 25, 26, 27, and
28.
(2)(1) (4)(3) (5) (6) (8)(7)
(10)
(11)
(13)(14)(15)
(9)
(12)

6
Rear panel
Figure 5 S5820X-28S rear panel
(1) Power module slot 1 (2) Power module slot 2
(3) Hot swappable fan tray (4) Groundin
g
screw
NOTE:
The S5820X-28S switch comes with power module slot 1 empty and power module slot 2 covered by a
filler panel. You can install one or two power modules for your switch as needed. In this figure, two
PSR300-12A AC power modules are installed in the slots.
S5820X-28C panel views
Front panel
Figure 6 S5820X-28C front panel
(1) Expansion interface card slot (2) Seven-segment LED
(3) Port mode LED (4) System status LED (SYS)
(5) Power supply 1 status LED (PWR1) (6) Power supply 2 status LED (PWR2)
(7) OAP card status LED (SLOT3) (8) Port mode LED switching button
(9) USB port (10) Console port
(11) 10/100/1000Base-T auto-sensin
g
Ethernet port (12) 10/100/1000Base-T Ethernet port LED
(13) SFP+ port (14) SFP+ port LED

7
NOTE:
The S5820X-28C switch comes with the expansion interface card slots covered by filler panels. In this
figure, two LSW1SP4P0 interface cards are installed in the slots.
Rear panel
Figure 7 S5820X-28C rear panel
(1) OAP card slot (2) Filler panel (do not remove it)
(3) Groundin
g
screw (4) Filler module (do not remove it)
(5) Power module slot 2 (6) Power module slot 1
(7) Hot swappable fan tray
NOTE:
•The S5820X-28C switch comes with power module slot 1 empty and power module 2 covered by a filler
panel. You can install one or two power modules for your switch as needed. In this figure, two
PSR300-12A AC power modules are installed in the slots.
•The S5820X-28C switch also comes with the OAP card slot covered by a filler panel.
Ports
Console port
An S5820X switch provides one console port on the front panel.
Table 4 Console port specifications
Item S
p
ecification
Connector type RJ-45
Compliant standard EIA/TIA-232
Transmission baud rate 9600 bps (default) to 115200 bps
Services
•Provides connection to an ASCII terminal.
•Provides connection to the serial port of a local or remote (through a pair of
modems) PC running terminal emulation program.

8
Management Ethernet port
The S5820X-26S and S5820X-28S switches have one management Ethernet port. You can connect this
port to a PC or management station for loading and debugging system software or remote management.
Table 5 Management Ethernet port specifications
Item S
p
ecification
Connector type RJ-45
Connector quantity 1
Port transmission rate 10/100/1000 Mbps, half/full duplex
Transmission medium and max
transmission distance 100 m (328.1 ft) over category-5 twisted pair cable
Functions and services Switch software and Boot ROM upgrade, network management
USB port
Every S5820X switch has one OHC-compliant USB2.0 port that can upload and download data at a
rate up to 12 Mbps. You can use this USB port to access the file system on the Flash of the switch, for
example, to upload or download application and configuration files.
NOTE:
USB devices from different vendors vary in compatibility and driver. H3C does not guarantee correct
operation of USB devices from other vendors on the switch. If a USB device does not operate correctly on
the switch, replace it with one from another vendor.
10/100/1000Base-T Ethernet port
Every S5820X switch has 10/100/1000Base-T Ethernet ports.
Table 6 10/100/1000Base-T Ethernet port specifications
Item S
p
ecification
Connector type RJ-45
Interface attributes
•10 Mbps, full duplex
•100 Mbps, full duplex
•1000 Mbps, full duplex
•MDI/MDI-X, auto-sensing
Max transmission
distance 100 m (328.08 ft)
Transmission medium Category-5 (or above) twisted pair cable
Standards IEEE 802.3i, 802.3u, 802.3ab

9
SFP+ port
The S5820X-26S and S5820X-28S switches have fixed SFP+ ports, and you can plug SFP+ transceiver
modules, SFP transceiver modules, or SFP+ cables into the SFP ports as needed. You can use the SFP+
ports as IRF physical ports to connect the S5820X switches in an IRF deployment.
Table 7 SFP/SFP+ transceiver module and SFP+ cable specifications
Transceiver
module/cable
Central
wavelen
g
th
Connector Fiber Max transmission distance
1000 Mb
p
s SFP transceiver modules
SFP-GE-SX-MM850-A 850 nm LC
•50/125 m
multimode
optical fiber
•62.5/125m
multimode
optical fiber
•550 m (1804.46 ft) over
50/125 m fiber
•275 m (902.23 ft) over
62.5/125 m fiber
SFP-GE-LX-SM1310-A 1310 nm LC 9/125 m single
mode optical fiber
10 km (6.21 miles)
SFP-GE-LH40-SM1310 1310 nm LC 9/125 m single
mode optical fiber
40 km (24.86 miles)
SFP-GE-LH40-SM1550 1550 nm LC 9/125 m single
mode optical fiber
40 km (24.86 miles)
SFP-GE-LH70-SM1550 1550 nm LC 9/125 m single
mode optical fiber
70 km (43.50 miles)
SFP-GE-T N/A RJ-45 Twisted pair cable 100 m (328.08 ft)
10 GE SFP+ transceiver modules
SFP-XG-SX-MM850-A 850 nm LC
50/125m
multimode optical
fiber
300 m (984.25 ft)
SFP-XG-SX-MM850-E 850 nm LC
50/125 m
multimode optical
fiber
300 m (984.25 ft)
SFP-XG-LX220-MM1310 1310 nm LC
62.5/125m
multimode optical
fiber
220 m (721.78 ft)
SFP-XG-LX-SM1310 1310 nm LC
9m/125m
single mode
optical fiber
10 km (6.21 miles)
SFP-XG-LX-SM1310-E 1310 nm LC 9/125 m single
mode optical fiber
10 km (6.21 miles)
10GE SFP+ cables
LSWM1STK N/A N/A SFP+ cable 0.65 m (2.13 ft)
LSWM2STK N/A N/A SFP+ cable 1.2 m (3.94 ft)
LSWM3STK N/A N/A SFP+ cable 3 m (9.84 ft)

10
Transceiver
module/cable
Central
wavelen
g
th
Connector Fiber Max transmission distance
LSTM1STK N/A N/A SFP+ cable 5m (16.40 ft)
LSTM2STK N/A N/A SFP+ cable 7 m (22.97 ft)
NOTE:
•To guarantee the functionality of the SFP+ ports, use only H3C SFP and SFP+ transceiver modules on the
S5820X-26S and S5820X-28S switches.
•The available SFP and SFP+ transceiver modules are subject to change over time. For the most
up-to-date list of SFP transceiver modules, consult your H3C sales representative or technical support
engineer.
•For more specifications for these transceiver modules, see
H3C Transceiver Modules User Guide .
The SFP+ cables available for the H3C S5820X Switch Series are 10 Gbps SFP+ Cu cables, as shown
in Figure 8.
Figure 8 SFP+ cable
(1) Connector (2) Pull latch
LEDs
The H3C S5820X Switch Series provides the following LEDs for you to monitor the health and operating
status of the switch:
•System status LED
•Power module status LEDs
•Seven-segment LED
•Port mode LED
•10/100/1000Base -T Ethernet port LED
•SFP+ port
•Management Ethernet port LEDs
•OAP card status LED
System status LED
The system status LED shows the operating status of the switch.

11
Table 8 System status LED description
LED mark Status Descri
p
tion
SYS
Steady green The switch is operating correctly.
Flashing green (1 Hz) The switch is performing power-on self test (POST).
Steady red POST has failed.
Flashing yellow (1 Hz) Some ports have failed to pass POST.
Off The switch is powered off.
Power module status LEDs
The S5820X-28S and S5820X-28C switches have one status LED for each power module slot to show the
availability and operating status of the hot swappable power modules in the slots.
Table 9 Power module status LED description
LED mark Status Descri
p
tion
PWR1
Steady green A power module is installed in power module slot 1, and the power
output is normal.
Steady yellow A power module is installed in power module slot 1, but the power
module has an output problem.
Off No power module is installed in power module slot 1, or no power
is being input.
PWR2
Steady green A power module is installed in power module slot 2, and the power
output is normal.
Steady yellow A power module is installed in power module slot 2, but the power
module has an output problem.
Off No power module is installed in power module slot 2, or no power
is input.
Seven-segment LED
The seven-segment LED, together with the system status LED, shows detailed system operating
information.
Table 10 Seven-segment LED description
System status
LED (SYS) status Seven-segment LED (Unit) status Description
Flashing green
The LED displays numbers one by one.
POST is running, and the LED displays the
ongoing test item ID.
Flashing red
The LED displays flashing numbers.
POST has failed, and the LED flashes the ID
of the failed test item.

12
System status
LED (SYS) status Seven-segment LED (Unit) status Description
Flashing green
A bar rotates clockwise around the LED.
Software is loading.
Steady red
The LED displays a flashing Fcharacter.
The switch is experiencing a fan failure.
Steady red
The LED displays a flashing tcharacter.
The switch is in an over-temperature
condition.
Steady green
The LED displays a capital Ccharacter.
The switch is the command switch in a
cluster.
The LED displays an Scharacter.
The switch is a member switch in a cluster.
The LED displays a lowercase ccharacter.
The switch is a candidate switch for a
cluster.
The LED displays a number.
The member ID of the switch (the character A
represents 10).
Port mode LED
The port mode LED indicates the type of port information that the network port LEDs are showing. You
can use the port LED mode switching button to change the type of displayed port information.
Table 11 Port mode LED description
LED mark Status Descri
p
tion
Mode Steady green The network port LEDs are showing port rates.
Steady yellow The network port LEDs are showing duplex modes.
10/100/1000Base-T Ethernet port LED
Each 10/100/1000Base-T auto-sensing Ethernet port has a status LED to show port operating status and
activities. The port mode LED indicates the type of port status information (for example, port rate or
duplex mode) that the port LEDs are showing. You can use the port LED mode switching button to change
the type of displayed port information.