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CONTENTS
ABOUT THIS GUIDE
Conventions 5
Related Documentation 6
About this Document 6
1PRODUCT OVERVIEW
Preface 7
General Architecture 10
Fabric Modules 17
System Specifications 24
Software Features 25
Examining Installation Site 50
Installation Tools 52
4SWITCH INSTALLATION
Confirming Installation Preparation 53
Installation Flow 53
Mounting the Switch in User-Supplied Cabinet 54
Connecting PGND Wire and Power Cord 59
Installing Cabling Rack 64
Installing Fan Tray 64
Installing PoE Lightning Protection Box 65
Installing I/O modules 66
Connecting Interface Cables 67
Cable Routing Recommendations 70
Cable Management 70
Verifying the Installation 73
5DEBUGGINGTHE SYSTEM
Setting up Configuration Environment 75
Powering and Booting the Switch 76
6SWITCH MONITORINGAND MAINTENANCE
Monitoring the Switch 79
Hardware Maintenance 81
Upgrading the Software 86
Password Loss 95
ALIGHTNING PROTECTIONOFTHE SWITCH
Installing a Lightning Arrester for the AC Power 97
Installing a Lightning Arrester for the Network Port 98
B3COM NETWORK MANAGEMENT
3Com Network Supervisor 101
3Com Network Director 102
3Com Network Access Manager 102
3Com Enterprise Management Suite 103
Integration Kit with HP OpenView Network Node Manager 103
ABOUT THIS GUIDE
This guide describes the 3Com® Switch 8800 and how to install hardware,
configure and boot software, and maintain software and hardware. This guide
also provides troubleshooting and support information for your switch.
This guide is intended for Qualified Service personnel who are responsible for
configuring, using, and managing the switches. It assumes a working knowledge
of local area network (LAN) operations and familiarity with communication
protocols that are used to interconnect LANs.
n
ConventionsTa bl e 1 lists icon conventions that are used throughout this guide.
Always download the Release Notes for your product from the 3Com World Wide
Web site and check for the latest updates to software and product
documentation:
http://www.3com.com
Ta bl e 1 Notice Icons
IconNotice TypeDescription
Information noteInformation that describes important features or
n
CautionInformation that alerts you to potential loss of data
c
WarningInformation that alerts you to potential personal
w
Ta bl e 2 lists text conventions that are used throughout this guide.
Ta bl e 2 Text Conventions
instructions.
or potential damage to an application, system, or
device.
injury.
ConventionDescription
Screen displaysThis typeface represents information as it appears on the
screen.
Keyboard key namesIf you must press two or more keys simultaneously, the key
names are linked with a plus sign (+), for example:
Press Ctrl+Alt+Del
The words “enter” and “type” When you see the word “enter” in this guide, you must type
something, and then press Return or Enter. Do not press
Return or Enter when an instruction simply says “type.”
6ABOUT THIS GUIDE
Table 2 Text Conventions
ConventionDescription
Words in italicsItalics are used to:
Emphasize a point.
Denote a new term at the place where it is defined in the
text.
Identify menu names, menu commands, and software
button names.
Examples:
From the Help menu, select Contents.
Click OK.
Words in boldBoldface type is used to highlight command names. For
example, “Use the display user-interface command
to...”
Related
Documentation
About this Document
c
The following manuals offer additional information necessary for managing your
Switch 8800:
command line interface (CLI) commands, that you require to manage your
Switch 8800.
■ Switch 8800 ConfigurationGuide— Describes how to configure your Switch
8800 using the supported protocols and CLI commands.
■ Switch 8800 Release Notes — Contains the latest information about your
product. If information in this guide differs from information in the release
notes, use the information in the Release Notes.
These documents are available in Adobe Acrobat Reader Portable Document
Format (PDF) on the 3Com World Wide Web site:
http://www.3com.com/
3Com supports only the commands that are described in this document set. You
may encounter commands in the device’s command line interface (CLI) that are
not described in this guide. Any command that you see in the CLI but is not
described in this guide is not supported in this version of the software.
Unsupported commands may result in a loss of data and you enter them at your
own risk.
PRODUCT OVERVIEW
1
PrefaceThe 3Com Switch 8800 Family of Routing Switches (referred to as the Switch 8800
Family) are intelligent, multi-layer modular LAN switches and are ideal for
enterprise environments where non-stop availability of critical applications and the
highest performance, security, and granular control are required. The Switch 8800
Family delivers high density Gigabit and 10 Gigabit switching in an integrated
chassis platform. Built-in support for IPv6, MPLS, Power over Ethernet (PoE), and
Resilient Layer-3 routing, hot-swap modules, and redundant power, along with
sub one-second fabric fail over on the Switch 8800, ensure (24 x 7) availability to
support the most demanding enterprise core and campus environments.
Advanced Quality of Service features such as bandwidth management and packet
classification optimize quality for real-time voice and video applications. Intrusion
prevention security capabilities such as IEEE 802.1X Network Login and Access
Control Lists ensure that only authorized users can access network resources.
The Switch 8800 is focused on delivering functionality towards the higher end of
the large Enterprise, with a 4-port 10 Gigabit Module, high density 48-port
Gigabit Modules, as well as a group of Advanced Modules with support for larger
routing tables and/or MPLS. Power over Ethernet (PoE) is built into all Switch
8800s.
Application modules for the Switch 8800 provide the flexibility to add a firewall,
IPsec encryption, network monitoring with NetFlow, and Layer 2 VPN networking
using Virtual Private LAN Service (VPLS) by simply adding a module to the chassis.
8CHAPTER 1: PRODUCT OVERVIEW
Currently, the Switch 8800 Family include the following models:
■ Switch 8807: This model provides up to 600 Gbps switching capacity. It
Figure 1 3Com Switch 8807 (7-Slot Chassis)
■ Switch 8810: This model provides up to 960 Gbps switching capacity. It
supports (for example) up to 240 GE ports and 20 x 10GE ports.
supports (for example) up to 192 GE ports and 32 x 10GE ports.
Figure 2 3Com Switch 8810 (10-Slot Chassis)
Preface9
■ Switch 8814: This model provides up to 1.44 Tbps switching capacity. It
supports (for example) up to 576 GE ports and 48 x 10GE ports.
Figure 3 3Com Switch 8814 (14-Slot Chassis)
10CHAPTER 1: PRODUCT OVERVIEW
I/O Module
Fabric
PoE
Entry
AC PSU
AC PSU
Fan tray
I/O Module
I/O Module
Fabric
I/O Module
I/O Module
General ArchitectureThe Switch 8800 Family use integrated chassis, which can be subdivided into
power area, board area, backplane and fan area.
Chassis and SlotsSwitch 8807
Figure 4 Switch 8807 slots
■ The Switch 8807 chassis provides seven slots in its board area: The top two
accommodate fabrics, which can operate in 1+1 redundancy mode; the
remaining five accommodate I/O or application modules, which you can select
from various available models. All modules in this area are hot-swappable.
■ At the bottom of the chassis is the power area that can accommodate one PoE
entry module and two PSUs. The two PSUs are online-swappable; they can
operate in 1+1 redundancy mode. The switch supports AC power inputs.
■ On the right of the chassis is the fan area that contains one vertical
hot-swappable fan tray. The fan tray draws and exhausts air from left to right.
Switch 8810
Figure 5 Switch 8810 slots
I/O Module
I/O Module
I/O Module
I/O Module
Fabric
Fabric
I/O Module
I/O Module
I/O Module
I/O Module
General Architecture11
Fan tray
AC PSU
■ The Switch 8810 chassis provides ten slots in its board area: The middle two
PoE
Entry
AC PSU
accommodate fabric modules, which can operate in 1+1 redundancy mode;
the remaining eight accommodate I/O or application modules, which you can
select from various available models. All modules in this area are
hot-swappable.
■ At the bottom of the chassis is the power area that can accommodate one PoE
entry module and two PSUs. The two PSUs are online-swappable; they can
operate in 1+1 redundancy mode. The switch supports AC power inputs.
■ On the right of the chassis is the fan area that contains one vertical
hot-swappable fan tray. The fan tray draws and exhausts air from left to right.
■ The Switch 8814 chassis provides 14 slots in its board area: The middle two
PoE
entry
AC PSU
Fan tray 1Fan tray 2
accommodate fabric modules, which can operate in 1+1 redundancy mode;
the remaining 12 accommodate I/O or application modules, which you can
select from various available models. All modules in this area are
hot-swappable.
■ At the bottom of the chassis is the power area that can accommodate one PoE
entry module and two PSUs. The two PSUs are online-swappable. The switch
supports AC power inputs.
■ On the right of the chassis is the fan area that contains two vertical
hot-swappable fan trays. The fan trays draw and exhaust air from left to right.
BackplaneThe backplane of the Switch 8800 Family allows high-speed data exchange
between fabrics and I/O modules, as well as the exchange of various management
and control signals in the system.
Functions
The following are the main functions of the backplane:
■ Providing communication channels for signal exchange between boards
■ Supporting board hot-swapping
■ Supporting auto-discovering boards in slots
■ Connecting PSUs, distributing power and providing monitor channels to
various components (PSUs, fabrics and I/O modules) in the chassis.
Structure
■ Switch 8807
AC Power System
General Architecture13
The Switch 8807 uses a passive backplane, which provides five I/O module
interfaces, two fabric interfaces, one fan interface, and three -48V power
interfaces (two for PSUs and one for PoE entry module).
■ Switch 8810
The Switch 8810 uses a passive backplane, which provides eight I/O module
interfaces, two fabric interfaces, one fan interface, and three -48V power
interfaces (two for PSUs and one for PoE entry module).
■ Switch 8814
The Switch 8814 uses a passive backplane, which provides 12 I/O module
interfaces, two fabric interfaces, two fan interfaces, and three -48V power
interfaces (two for PSUs and one for PoE entry module).
n
■ The Switch 8800 Family supports AC power inputs.
■ The Switch 8800 Family supports 1+1 power supply redundancy.
■ The PSUs of the Switch 8800 Family are online-swappable.
The Switch 8800 Family supports AC power inputs. The power frame is at the
bottom of the chassis, with a height of 3U. In the same slot, you can insert an AC
PSU. The power frame is in different compartment from the functional board
frame and connected to the latter with cables, which are routed along the back of
the chassis. The power supply is cooled by built-in fans of the PSUs, which draw air
into the chassis from the front and exhaust air out of the chassis from the back.
Ta bl e 1 Specifications for AC PSUs
Specifications
Item
Rated voltage
range
Max voltage range 90 to 264 VAC, 50/60
Max input current 15 A 15 A 15 A
Max output power 1200 W 1200 W (90 to 160 V)
Switch 8807 Switch 8810Switch 8814
100 to 240 VAC,
50/60 Hz
Hz
100 to 120 VAC, 60 Hz
200 to 240 VAC, 50 Hz
90 to 264 VAC, 50/60
Hz
2000 W (160 to 264 V)
100 to 120 VAC, 60 Hz
200 to 240 VAC, 50 Hz
90 to 264 VAC, 50/60
Hz
1200 W (90 to 160 V)
2000 W (160 to 264 V)
PoE Power SupplyThe Switch 8800 Family supports Power over Ethernet (PoE). With this feature, a
Switch 8800 Family switch equipped with an external PoE power supply and
PoE-capable modules can deliver 48 VDC to its remotely powered devices (PDs,
such as IP phones, WLAN APs and network cameras) through twisted pairs.
■ The Switch 8800 Family can supply power to remote PDs through the Ethernet
electrical ports on the I/O modules. Each I/O module can simultaneously supply
power to up to 48 PDs with the maximum distance of 100 m (328.1 feet).
■ Each Ethernet port can deliver up to 15.4 W to its PD.
14CHAPTER 1: PRODUCT OVERVIEW
■ A Switch 8800 supports up to 4500 W (220 V)/2250 W (110 V) power to its
PoE entry area
The PoE-supported Switch 8807/Switch 8810/Switch 8814 chassis has a PoE entry
area between the two power supply units. You can insert a PoE 3C17510 Switch
8800 PoE Entry Module into this area, and connect this module to a 3C17509
Switch 8800 External PoE Power Rack so as to import the output power of the
External Power Rack unit.
Figure 7 PoE entry module
PDs. It determines whether to deliver power to a newly detected PD depending
on the power it currently supplied.
n
External PoE Power Rack (3C17509)
The Switch 8800 External Power Rack is available for the Switch 8807, Switch
8810, and Switch 8814. The External Power Rack has three AC inputs and one DC
outputs.
Figure 8 Front panel of the 3C17509 Switch 8800 External Power Rack PoE power supply
Figure 8 shows its front panel.
The external PoE power system supports 2+1 redundancy and online-swapping of
PSUs.
To implement the PoE function on the Switch 8800 Family, PoE-capable interface
module is required. There are two modules are PoE-capable:
Both of these I/O Modules are PoE-capable, and will function with the addition of
a 3C17529 PoE Option (PoE DIMM Module).
General Architecture15
Ta bl e 2 describes typical equipment configurations and specifications of external
PoE power system.
Ta bl e 2 Typical equipment configurations and specifications of external PoE power system
Item Description
Physical dimensions (H x W x D) 177 x 486 x 320.5 mm (7.0 x 19.1 x 12.6 in.)
System controller One
Rectifier Two NP2500UAC (required) + one redundant
NP2500UAC (optional)
AC accessory Three AC inputs and switches
Three-phase AC voltage detection circuit
Input voltage range: 90 to 290 VAC; rated voltage
and current: 250 VAC, 20 A
DC accessory A single DC output, with max output current of
Max power consumption 4500 W
93 A
The external PoE power system has monitor function. It provides one system
monitoring module, one RS232 and two RS485 monitoring interfaces. The system
monitoring module reports the running information of the PSUs in the system to a
fabric through RS232 or RS485 interface and indicates alarm status by the alarm
LED (ALM). You can connect cables to the interfaces from the front as well as the
rear of the frame.
n
RS485 monitoring interface.
Ta bl e 3 LEDs of external PoE power system
LED Label Color
Input power LED AC Green ON OFF Loss of AC input power, or blown
Output power LED DC Green ON OFF No DC output from PSU
Fault LED Fault Red OFF ON Irreversible fault occurred in PSU
Running status LED RUN Green ON OFF PSU shutdown or PSU running
Alarm LED ALM Red OFF ON Loss of AC input power,
MBUSIntroduction
The MBUS is a service-independent maintenance and test bus. No service traffic
goes through the MBUS. The shutdown and reset of the MBUS does not affect the
services on the switch, and faults that have occurred on modules do not affect the
MBUS.
The external PoE power system for the Switch 8800 Family only supports the
Normal
state
Abnormal
state Abnormal reason
fuse
trouble
under-voltage or over-voltage
input, under-voltage or
over-voltage output, or PSU fault
Through the MBUS, the system instructs the MBUS modules on individual cards to
power on/off the cards one by one in turn, thus prevent power surging. The MBUS
module software must support online upgrade.
16CHAPTER 1: PRODUCT OVERVIEW
Role and function
The MBUS system is powered by 5 V from the MBUS on the fabric. The 5 V power
on the two fabrics are redundant to each other.
Each MBUS module is attached to the MBUS, which contains two control lines:
MBUS0 and MBUS1.
Each card has an independent MBUS module, those on the fabrics are primary
MBUS modules, and those on application modules are secondary MBUS modules.
When the fabrics operate in redundancy mode, the MBUS module on the active
fabric is the active module, and the one on the standby fabric is the standby
module.
The MBUS uses a controller area network (CAN) bus as its control bus, that uses
the 1:1 hot backup and transfers control information at 1 Mbps.
Fan Tray■ The Switch 8807 uses one 25 W fan tray, which contains four 120 x 120 x 25.4
mm (4.7 x 4.7 x 1.0 in.) axial fan units. The fans can be governed in two
modes: fabric-controlled or temperature-controlled. They operate at -48 VDC
supplied from the backplane.
■ The Switch 8810 uses one 35 W fan tray, which contains six 120 x 120 x 25.4
mm (4.7 x 4.7 x 1.0 in.) axial fan units. The fans can be governed in two
modes: fabric-controlled or temperature-controlled. They operate at -48 VDC
supplied from the backplane.
■ The Switch 8814 uses two 25 W fan trays, each of which contains four 120 x
120 x 25.4 mm (4.7 x 4.7 x 1.0 in.) axial fan units (and totally eight for the two
fan trays). The fans can be governed in two modes: fabric-controlled or
temperature-controlled. They operate at -48 VDC supplied from the backplane.
Figure 9 Fan tray panel of the Switch 8800 Family
Fabric Modules17
Ta bl e 4 LEDs on fan tray panel
LED Color Status Status
RUN Green OFF The fan tray is faulty.
ON The fan tray is operating normally.
ALM Red OFF The fan tray is operating normally.
ON The fan tray is faulty.
Fabric ModulesThe Switch Fabric serves as the core of the Switch 8800 Family.The following fabric
models are available to the Switch 8800 Family:
■ 3C17508 - 3Com Switch 8800 360 Gbps Fabric
■ 3C17539 - 3Com Switch 8800 720 Gbps Fabric
These fabric modules provide:
■ Route calculating and forwarding table maintenance.
■ Integrating Crossbar switching fabric to accomplish service exchange between
different boards.
■ System configuration and monitoring functions, which allows the system to
monitor other boards and upgrade/reset service board software.
360 Gbps Switch FabricTechnical specifications
This model applies to the 3C17508. See Table 5 for its specifications.
Ta bl e 5 360 Gbps Switch Fabric specifications
Item Specifications
CPU MPC755
Boot ROM 512 KB
SDRAM 512 MB (expandable to 1 GB)
Physical dimensions (W x D) 366.7 x 340 mm (14.4 x 13.4 in.)
Port One Console port, for local configuration management
Max power consumption 60 W
Panel
On its panel, the 360 Gbps Switch Fabric provides a CF port, CF LED (CFS),
10Base-T/100Base-TX port, RS232/485 port, Console port, AUX port, RESET
button, I/O module status LEDs, and 360 Gbps Switch Fabric status LEDs (SFS,
ACT, ALM, RUN) in turn, as shown in
One AUX port, for remote dialup configuration management
One 10Base-T/100Base-TX port, for software upgrade and
network management
One RS232/485 port, for connecting external PoE power frame
to provide the PoE function
One hot-swap-supported CF port
Figure 10.
18CHAPTER 1: PRODUCT OVERVIEW
Figure 10 360 Gbps Switch Fabric panel
Compact Flash (CF slot)
The 360 Gbps Switch Fabric module provides a CF slot to accommodate a
standard CF card, where you can save logging information, host version
information, alarming and other diagnostic information and conveniently upgrade
software online. The fabric ships with a CF memory card.
Management Ports
The Management 10Base-T/100Base-TX port uses an RJ-45 connector. It can
connect a background terminal for system program loading and debugging, or
connect a network management station for remote system management.
Ta bl e 6 Management 10Base-T/100Base-TX port specifications
Item Description
Connector RJ-45
Number of ports One
Rate 10 Mbps, half duplex/full duplex
100 Mbps, half duplex/full duplex
Max. transmission segment over the selected
medium
Service System program upgrade and network
100 m (328 ft.) over the category-5 twisted
pair cable (crossover cable is required).
management
The following table describes the status LEDs for the management
10Base-T/100Base-TX port.
Ta bl e 7 Status LEDs for the management 10Base-T/100Base-TX port
LED Status
LINK OFF No link is present.
ON A link is present.
ACT OFF No packets are transmitted/received on the port.
Blinking Packets are being transmitted/received on the port.
■ RS232/485 port
The RS232/485 port uses RJ-45 connector, for connecting external PoE power
frame when supported and monitoring its status.
Ta bl e 8 RS232/485 port specifications
Item Description
Connector RJ-45
Number of ports One RS 232 port and one RS485 port
Fabric Modules19
Table 8 RS232/485 port specifications
Item Description
Service The port for monitoring and communication with the external subsystem,
such as external PoE power supply module
■ Console port
The Console port uses an RJ-45 connector. It can be connected to a background
terminal for system debugging, maintenance, management, and host software
loading.
Ta bl e 9 Console port specifications
Item Description
Connector RJ-45
Standard Asynchronous EIA/TIA-232
Baud rate 9600 bps (default)
Transmission
segment
Service Connects a serial port of a local PC and runs terminal emulation on the
15 m (49 ft.)
PC.
n
You can choose your own baud rate for the Console port.
■ AUX port
The AUX port uses an RJ-45 connector. The port can serve as a backup port for the
Console port to connect a background terminal, or directly connect a modem
device, for remote system debugging, configuration, maintenance and
management.
Ta bl e 10 AUX port specifications
Item Description
Connector RJ-45
Standard Asynchronous EIA/TIA-232
Service Connects a serial port of a PC (through a Modem pair for a remote PC) and runs
terminal emulation on the PC.
RESET button
You can press the RESET button on the panel to reset the 360 Gbps Switch Fabric
module.
Status LEDs
■ CF status LED
You can learn the operating status of the CF card by reading the CF status LED on
the panel.
20CHAPTER 1: PRODUCT OVERVIEW
Ta bl e 11 CF status LED
■ Status LEDs for I/O module
The 360 Gbps Switch Fabric module has 12 pairs of LEDs to indicate the operating
status of 12 I/O module.
Ta bl e 12 Status LEDs for I/O module
LED Status
CFS ON The CF card is in position and is idle. You cannot remove the card.
Blinking The CF card is in position and reading/writing data. You cannot remove
OFF The CF card is out of position or offline (you can force the in-position CF
LED Status
RUN ON The module is faulty.
OFF The module is faulty or out of position.
Blinking (1s) The module is running normally.
Fast blinking (125 ms) The module is booting or not registered successfully.
ALM ON The module has alarms.
OFF The module has no alarms or is out of position.
0~5,
8~13
Indicate slots 0 through 5 and slots 8 through 13
the card.
card to go offline using the appropriate background command). You can
remove/insert the card.
■ Status LEDs for the 360 Gbps Switch Fabric module
You can learn the operating status of 360 Gbps Switch Fabric module by reading
the SFS, ACT, ALM and RUN LEDs on it. The following table gives a summary of
the four LEDs.
Ta bl e 13 Status LEDs for the 360 Gbps Switch Fabric module
360 Gbps Switch
Fabric LED
SFSON The switching fabric unit is active.
RUN Green The 360 Gbps Switch Fabric module is faulty.
ALM Red The 360 Gbps Switch Fabric module has alarms.
ACT Green The 360 Gbps Switch Fabric module is active.
Status
OFF The switching fabric unit is standby.
OFF The 360 Gbps Switch Fabric module is faulty.
Green blinking The 360 Gbps Switch Fabric module runs normally.
OFF The 360 Gbps Switch Fabric module has no alarms.
OFF The 360 Gbps Switch Fabric module is standby.
720 Gbps Switch FabricTechnical specifications
This model applies to the 3C17539. See Table 5 for its specifications.
Ta bl e 14 720 Gbps Switch Fabric specifications
Item Specifications
CPU MPC755
Boot ROM 512 KB
SDRAM 512 MB (expandable to 1 GB)
Physical dimensions (W x D) 366.7 x 340 mm (14.4 x 13.4 in.)
Port One Console port, for local configuration management
Max power consumption 110 W
Panel
On its panel, the 720 Gbps Switch Fabric provides a CF slot, CF LED (CFS),
10Base-T/100Base-TX port, RS232/485 port, Console port, AUX port, RESET
button, I/O module status LEDs, and 360 Gbps Switch Fabric status LEDs (SFS,
ACT, ALM, RUN) in turn, as shown in
card.
Fabric Modules21
One AUX port, for remote dialup configuration management
One 10Base-T/100Base-TX port, for software upgrade and
network management
One RS232/485 port, for connecting external PoE power frame
to provide the PoE function
One hot-swap-supported CF port
Figure 10. The fabric ships with a CF memory
Figure 11 720 Gbps Switch Fabric panel
Compact Flash (CF slot)
The 720 Gbps Switch Fabric module provides a CF port to accommodate a
standard CF card, where you can save logging information, host version
information, alarming and other diagnostic information and conveniently upgrade
software online.
Management Ports
The Management 10Base-T/100Base-TX port uses an RJ-45 connector. It can
connect a background terminal for system program loading and debugging, or
connect a network management station for remote system management.
Ta bl e 15 Management 10Base-T/100Base-TX port specifications
Item Description
Connector RJ-45
Number of ports One
Rate 10 Mbps, half duplex/full duplex
100 Mbps, half duplex/full duplex
22CHAPTER 1: PRODUCT OVERVIEW
Table 15 Management 10Base-T/100Base-TX port specifications
The following table describes the status LEDs for the management
10Base-T/100Base-TX port.
Ta bl e 16 Status LEDs for the management 10Base-T/100Base-TX port
■ RS232/485 port
Item Description
Max. transmission segment over the selected
medium
Service System program upgrade and network
LED Status
LINK OFF No link is present.
ON A link is present.
ACT OFF No packets are transmitted/received on the port.
Blinking Packets are being transmitted/received on the port.
100 m (328 ft.) over the category-5 twisted
pair cable (crossover cable is required).
management
The RS232/485 port uses RJ-45 connector, for connecting external PoE power
frame when supported and monitoring its status.
Ta bl e 17 RS232/485 port specifications
Item Description
Connector RJ-45
Number of ports One RS 232 port and one RS485 port
Service The port for monitoring and communication with the external subsystem,
such as external PoE power supply module
■ Console port
The Console port uses an RJ-45 connector. It can be connected to a background
terminal for system debugging, maintenance, management, and host software
loading.
Ta bl e 18 Console port specifications
Item Description
Connector RJ-45
Standard Asynchronous EIA/TIA-232
Baud rate 9600 bps (default)
Transmission
segment
Service Connects a serial port of a local PC and runs terminal emulation on the
15 m (49 ft.)
PC.
n
You can choose your own baud rate for the Console port.
■ AUX port
Fabric Modules23
The AUX port uses an RJ-45 connector. The port can serve as a backup port for the
Console port to connect a background terminal, or directly connect a modem
device, for remote system debugging, configuration, maintenance and
management.
Ta bl e 19 AUX port specifications
Item Description
Connector RJ-45
Standard Asynchronous EIA/TIA-232
Service Connects a serial port of a PC (through a Modem pair for a remote PC) and runs
terminal emulation on the PC.
RESET button
You can press the RESET button on the panel to reset the 720 Gbps Switch Fabric
module.
Status LEDs
■ CF status LED
You can learn the operating status of the CF card by reading the CF status LED on
the panel.
Ta bl e 20 CF status LED
LED Status
CFS ON The CF card is in position and is idle. You cannot remove the card.
Blinking The CF card is in position and reading/writing data. You cannot remove
the card.
OFF The CF card is out of position or offline (you can force the in-position CF
card to go offline using the appropriate background command). You can
remove/insert the card.
■ Status LEDs for I/O module
The 720 Gbps Switch Fabric module has 12 pairs of LEDs to indicate the operating
status of 12 I/O module.
Ta bl e 21 Status LEDs for I/O module
LED Status
RUN ON The module is faulty.
OFF The module is faulty or out of position.
Blinking (1s) The module is running normally.
Fast blinking (125 ms) The module is booting or not registered successfully.
ALM ON The module has alarms.
OFF The module has no alarms or is out of position.
0~5,
8~13
Indicate slots 0 through 5 and slots 8 through 13
■ Status LEDs for the 720 Gbps Switch Fabric module
24CHAPTER 1: PRODUCT OVERVIEW
You can learn the operating status of 720 Gbps Switch Fabric module by reading
the SFS, ACT, ALM and RUN LEDs on it. The following table gives a summary of
the four LEDs.
Ta bl e 22 Status LEDs for the 720 Gbps Switch Fabric module
RESET button
You can press the RESET button on the panel to reset the 720 Gbps Switch Fabric.
360 Gbps Switch
Fabric LED
SFSON The switching fabric unit is active.
RUN Green The 720 Gbps Switch Fabric module is faulty.
ALM Red The 720 Gbps Switch Fabric module has alarms.
ACT Green The 720 Gbps Switch Fabric module is active.
Status
OFF The switching fabric unit is standby.
OFF The 720 Gbps Switch Fabric module is faulty.
Green blinking The 720 Gbps Switch Fabric module runs normally.
OFF The 720 Gbps Switch Fabric module has no alarms.
OFF The 720 Gbps Switch Fabric module is standby.
Status LEDs
See the section “Status LEDs” on page 19.
System SpecificationsThe following table summarizes the physical specifications of the Switch 8800
Family.
Ta bl e 23 Technical specifications of the Switch 8800 Family
Item Switch 8807 Switch 8810 Switch 8814
Dimensions
(H x W x D)
Weight (full load) 600 kg (143 lb) 80 kg (176 lb) 100 kg (220 lb)
Max power
consumption
Switching
capacity (see
Note 1)
Number of
VLANs
Maximum MAC
address table size
Forwarding table
entries
Number of fabric
slots
486 x 436 x 450 mm
(19.1 x 17.2 x 17.7
in.)
1200 W 2000 W 2000 W
Fab360: 600 Gbps
(see Note 2)
4 K
14 K/per module, total 14 K x number of modules
See Note 3
128 K/256 K
2 2 2
619 x 436 x 450 mm
(24.4 x 17.2 x 17.7
in.)
Fab360: 480Gbps
Fab720: 960Gbps
753 x 436 x 450 mm
(29.6 x 17.2 x 17.7 in.)
Fab360: 720Gbps
Fab720: 1440Gbps
Software Features25
Table 23 Technical specifications of the Switch 8800 Family
Item Switch 8807 Switch 8810 Switch 8814
fabric module
type
Number of I/O
module slots
User interface 10/100/1000BASE-TX RJ45
Operating
temperature
Operating
humidity
(noncondensing)
Storage
temperature
Storage humidity 10% to 90%
360 Gbps Fabric360 Gbps Switch
Fabric
720 Gbps Switch
Fabric
5 8 12
1000BASE-X (SFP)
10BASE-X (XENPAK)
10BASE-X (XFP)
0 to 40C (32 to 104F)
10% to 90%
-10 to 70C (14 to 158F)
360 Gbps Switch Fabric
720 Gbps Switch Fabric
n
load-sharing fabrics.
Note 2: The 7-slot has additional backplane traces per slot compared to the
14-slot and the 10- slot chassis. The additional traces enable higher capacity per
slot using the 360G Fabric compared to the 10-slot and 14-slot chassis.
Note 3: See the Switch 8800 Configuration Guide for rules and limitations.
Software FeaturesThe software of the Switch 8800 Family uses fully distributed processing and runs
on 3Com network operating system Comware. The following table summaries the
supported software features.
Ta bl e 24 Software features of the Switch 8800 Family
Item Description
VLAN IEEE 802.1Q-compliant VLAN
Port-based, protocol-based (8 groups), IP subnet-based
VLAN division
GARP VLAN registration protocol (GVRP)
Super VLAN
Isolate user VLAN
Guest VLAN
Dynamic VLAN
STP IEEE 802.1d/IEEE 802.1w/IEEE 802.1s-compliant
spanning tree protocol (STP)/rapid STP (RSTP)/multiple
STP (MSTP)
Note 1: The switching capacity in the above table is calculated based on two
26CHAPTER 1: PRODUCT OVERVIEW
Table 24 Software features of the Switch 8800 Family
Item Description
Flow control IEEE 802.3x flow control (full duplex)
Back pressure flow control (half duplex)
Broadcast/multicast suppression Supported
Multicast Internet group management protocol (IGMP) snooping
This section provides specifications for the 24-port 1000BASE-X (SFP) module
(3C17514).
Ta bl e 32 3C17514 module specifications
Item Specification
CPU MPC8245
Boot ROM 512 KB
SDRAM 128 MB/256 MB
Physical dimensions (W x D) 366.7 x 340 mm (14.4 x 13.4 in.)
Max power consumption 100 W
Number of ports 24
Connector SFP/LC
Rate 1.25 Gbps
The 3C17514 module has two LEDs for each 1000 Mbps optical port on its panel.
Ta bl e 33 Port LEDs on the 3C17514 module
LED Status Meaning
LINK OFF No link is present.
Green A link is present.
ACT OFF No packets are transmitted/received on the port.
Orange blinking Packets are being transmitted/received on the port.
3C17516 24-port 10/100/1000BASE-T Module33
Matching CableYou can select appropriate SFP optical modules for the 1000 Mbps SFP optical
ports on the 3C17514 module according to your needs. For description of SFP
optical modules available to the SFP optical ports and their matching cable types,
Ta bl e 61 Technical specifications for the 3C17546
Item Specifications
CPU BCM1250
Boot ROM 512 KB
SDRAM 1 Gbps
Physical dimensions (W x D) 366.7 x 340 mm (14.4 x 13.4 in.)
Front panel
Figure 30 Front panel of the 3C17546
The 3C17546 provides eight 1000Base-X ports, one Console port, one AUX port,
three 10/100Base-TX ports and four status LEDs (ATTACK, ACT, ALM and RUN)
from left to right on the front panel.
3CR1754766 IPsec
Module
Ta bl e 62 Status LEDs on the 3C17546
LED Color Status Meaning
ATTACK Red OFF The module is not attacked.
ON The module is attacked.
ACT Green OFF The module is in standby mode.
Blinking The module is in active mode.
ALM Red OFF There is no link alarm.
ON There is a link alarm.
RUN Green OFF The module is faulty.
Blinking The module operates normally.
Available cables
Ta bl e 66 on page 46 lists the available SFP modules and cable types for the
1000BASE-X SFP ports.
Technical specifications
The 3CR1754766 IPsec Module provides eight Gigabit SFP optical ports.
Ta bl e 63 Technical specifications for the 3CR1754766
Item Specifications
CPU BCM1250
Boot ROM 512 KB
Application Modules45
Table 63 Technical specifications for the 3CR1754766
Item Specifications
SDRAM 512 MB
Physical dimensions (W x D) 366.7 x 340 mm (14.4 x 13.4 in.)
Front panel
Figure 31 Front panel of the 3CR1754766
The 3CR1754766 provides eight 1000Base-X ports, one Console port, one AUX
port, three 10/100Base-TX ports and four status LEDs (ATTACK, ACT, ALM and
RUN) from left to right on the front panel.
Ta bl e 64 Status LEDs on the 3CR1754766
3C17548 VPLS
Application Module
LED Color Status Meaning
ATTACK Red OFF The module is not attacked.
ON The module is attacked.
ACT Green OFF The module is in standby mode.
Blinking The module is in active mode.
ALM Red OFF There is no link alarm.
ON There is a link alarm.
RUN Green OFF The module is faulty.
Blinking The module operates normally.
Available cables
Ta bl e 66 on page 46 lists the available SFP modules and cable types for the
1000BASE-X SFP ports.
Technical specifications
The 3C17548 Virtual Private LAN Service (VPLS) Application Module provides no
I/O ports.
Ta bl e 65 Technical specifications for the 3C17548
Item Specifications
CPU MPC755
Boot ROM 512 KB
SDRAM 512 MB
Physical dimensions (W x D) 366.7 x 340 mm (14.4 x 13.4 in.)
46CHAPTER 2: I/O AND APPLICATION MODULES
Front panel
Figure 32 Front panel of the 3C17548
TransceiversTa bl e 66 documents the 3Com Switch 8800 Family transceivers.
Ta bl e 66 Transceiver Specifications
Optical Power Range (dBm)
Model
3Com Transceiver
Name
XENPAKs
3Com 10GBASE-LR
XENPAK
3Com 10GBASE-SR
XENPAK
3Com 10GBASE-ER
XENPAK
Ordering
Number
3CXENPAK92SMF9–2 m – 10 km
3CXENPAK94MMF502,0002 m - 300 m
3CXENPAK96SMF9–2 m – 40 km
Cable
Type
Core Size
(microns)
Bandwidth
(MHz - Km)
Transmission
Range
(6.6 ft – 6 mi)
(3.2 ft - 990 ft)
(6.6 ft – 25 mi)
Wavelength
(nm)OutputInputConnector
1,300-8.2 to 0.5-14.4 to
850-7.3 to
1,550-4.7 to 4-15.8 to -1SC
-1.3
0.5
-11.1 to
-1.0
SC
LC
XFPs
3Com 10GBASE-LR XFP 3CXFP92SMF9–2 m – 10 km
3Com 10GBASE-SR XFP 3CXFP94MMF62.51600.5 – 26 m
MMF62.52000.5 – 33 m
MMF504000.5 – 66 m
MMF505000.5 – 100 m
MMF502,0000.5 – 300 m
3Com 10GBASE-ER XFP 3CXFP96SMF9–2 m – 40 km
(6.6 ft – 6 mi)
(1.7 – 85 ft)
(1.7 – 108 ft)
(1.7 – 217 ft)
(1.7 – 328 ft)
(1.7 – 984 ft)
(6.6 ft – 25 mi)
1,300-8.2 to 0.5-14.4 to
850
1,550-4.7 to 4-15.8 to -1LC
-4.0 to
-1.1
0.5
-9.9 to -1.0LC
LC
1000 Mbps SFPs
3Com 1000BASE-SX
SFP
3Com 1000BASE-LX
SFP
3Com 1000BASE-LH70
SFP
3Com 1000BASE-T SFP 3CSFP93CAT5––100 m (328 ft)–––RJ-45
3CSFP91MMF62.51602 – 220 m
MMF62.52002 – 275 m
MMF504002 – 500 m
MMF505002 – 550 m
3CSFP92MMF62.55002 – 550 m
MMF504002 – 550 m
MMF505002 – 550 m
SMF9–2 m – 10 km
3CSFP97SMF9–2 m – 70 km
(6.6 – 721 ft)
(6.6 – 902 ft)
(6.6 – 1,640 ft)
(6.6 – 1,804 ft)
(6.6 – 1,804 ft)
(6.6 – 1,804 ft)
(6.6 – 1,804 ft)
(6.6 ft – 6 mi)
(6.6 ft – 43 mi) ft
850-9.5 to 0-17 to 0LC
1,300-9.5 to -3-20 to -3LC
1,5500 to 3-24 to -3LC
Switch 8800 Port Densities47
Switch 8800 Port
Densities
Ta bl e 67 describes the modules that are available for the Switch 8800, their
maximum port densities, and whether or not the module supports MPLS or IPv6.
*** The Firewall, IPsec, and VPLS Modules do not support IPv6 in the first IPv6
release.
48CHAPTER 2: I/O AND APPLICATION MODULES
3
INSTALLATION PREPARATION
Safety
Recommendations
General Safety
Recommendations
Safety
Recommendations
against Electricity
To avoid possible bodily injury and device impairment, please read the following
safety recommendations carefully before installing the Switch 8800 Family. The
recommendations do not cover every possible hazardous condition.
■ The Switch 8800 Family use redundant PSUs. Turn off all PSUs and remove all
the power cords before opening the chassis.
■ Keep the chassis clean and dust-free.
■ Keep the chassis and installation tools away from walk areas.
■ Look carefully for possible hazards in your work area, such as ungrounded
power extension cables, missing safety grounds, and moist floors.
■ Locate the emergency power-off switch in the room before installation. Shut
the power off at once in case accident occurs.
■ Unplug all the power cords and external cables before moving the chassis.
■ Do not maintain the equipment alone when it has been powered.
■ Never assume but check each time that power has been disconnected from a
circuit.
■ Do not place the switch on a moist area and avoid liquid flowing into the
switch.
Safety
Recommendations in
Moving the Switch 8800
Family
c
The Switch 8800 Family are rather big and heavy, so follow the recommendations
below when moving it.
■ Remove all the external cables (including power cords) before moving the
chassis.
■ Do not move the switch alone. Work with another person.
■ Move the switch slowly and stably. Never move suddenly or twist your body.
■ Move the switch at stable and consistent paces with your peer. Keep balance of
your body.
CAUTION: You can only hold the handles at both sides of the chassis when
moving the switch, but not the plastic panel of the chassis, the handle of the fan
frame, the handle of the PSUs or the air vents of chassis.
As these parts are not designed for bearing the weight of the entire chassis, any
attempt trying to carry the switch with these parts may impair the switch and even
injure yourself.
50CHAPTER 3: INSTALLATION PREPARATION
Wearing an
ESD-Preventive Wrist
Strap
c
To prevent the electronic components from being damaged by the electrostatic
discharge (ESD), take ESD measures for the area where the switch is located and
note the issues below:
■ Always wear an ESD-preventive wrist strap when installing the parts, especially
the electric printed circuit boards.
■ Hold the circuit board by the edge. Do not touch the components or the
electric printed circuit.
Take the following steps to use the ESD-preventive wrist strap.
Step 1: Wear the wrist strap on your wrist.
Step 2: Lock the wrist strap tight around your wrist to keep good contact with the
skin.
Step 3: Insert it into the hole peculiar to ESD-preventive wrist strap in the chassis
or attach it to the grounding screw of the chassis the alligator clips.
Step 4: Make sure that the ESD-preventive wrist strap is well grounded.
CAUTION: For the sake of safety, check the resistance of the ESD-preventive wrist
strap. The resistance reading should be in the range of 1 to 10 Mohm between
human body and the ground.
Safety
Recommendations
against Laser
c
Examining Installation
Site
Temperature/Humidity
Requirements
Some I/O modules of the Switch 8800 Family have optical interfaces. In operating
status, it is dangerous to stare into the open optical interface because the laser
being transmitted through the optical fiber produces a small beam of light which
has very high power density and is invisible to human eyes; when a beam of light
enters the eye, retina may be burned.
CAUTION: The laser inside the optical fiber may hurt your eyes.
The Switch 8800 Family can only be used indoors. To ensure that the switch works
normally and to prolong its service lifetime, the following requirements should be
met in terms of installation environment.
To ensure the normal operation and service lifetime of a switch, proper
temperature and humidity should be maintained in the equipment room.
Long-lasting high humidity in the equipment room is prone to poor insulation or
even leakage of the insulating material. Sometimes, the mechanical performance
deterioration, the rustiness and corrosion of some metal parts are also more likely
to occur. If the relative humidity is too low, the captive screws may become loose
due to the insulation washer contraction. Meanwhile, the electrostatic is likely to
be produced in the dry environment, which will jeopardize the CMOS circuit of the
switch. The higher the temperature, the greater the damage it will do to the
switch. Long-lasting high temperature will speed up the aging process of the
insulating materials, greatly lower the reliability of the switch, and therefore affect
its service life seriously.
Examining Installation Site51
Cleanness RequirementsDust is a hazard to the operating safety of the switch. The indoor dust
accumulated on the chassis can cause electrostatic absorption, which may result in
the poor contact of the connector or metal contact point. This happens more
frequently when indoor relative humidity is low, which will not only shorten the
service life of the switch, but also cause communication failure.
The required specifications on dust content and particle diameter in an equipment
room are shown in the following table.
Ta bl e 68 Limitation on dust content in equipment room
Mechanical active material Unit Content
Dust particle particles/m
Note: Dust particle diameter ‚≥ 5µm
3
‚≤3 x 10
(No visible dust on desk in three days)
4
Besides the dust specifications, the equipment room of the switch should also
meet the rigorous requirements for the content of salt, acid and sulfide in the air.
These harmful gases could accelerate the metal erosion and the aging process of
some parts. Incursion of harmful gases, such as SO
, H2S, NO2, NH3, and Cl2,
2
should be prevented. The specific limitation values of these harmful gases are
given in the following table.
Anti-Static
Requirements
Ta bl e 69 Harmful gas limits in an equipment room
Gas Average (mg/m3) Max. (mg/m3)
SO2 0.3 1.0
H2S 0.1 0.5
NO2 0.004 0.15
NH3 1.0 3
Cl2 0.1 0.3
Any possible interference sources, no matter outside or inside the system, affect
the switch in use in a way of capacitive coupling, inductive coupling,
electromagnetic radiation, common impedance (including the grounding system)
coupling or conducting line (power line, signaling line and transmission line etc.).
To prevent the interference, you should:
■ Take effective measures against electrical net interference for power supply
system.
■ Separate the working ground of the switch from the grounding device of the
power supply equipment or lightning-protection grounding device as far as
possible.
■ Keep the switch far away from the radio launcher, radar launcher, and
high-frequency devices working in the high current.
Grounding
Requirements
■ Adopt electromagnetic shielding if necessary.
A good grounding system is not only the basis essential to the stable and reliable
switch operation, but also an important guarantee of lightning protection,
anti-interference and ESD-prevention. The user must provide good grounding
system for the switch.
52CHAPTER 3: INSTALLATION PREPARATION
Power Supply
Requirements
The Switch 8800 Family adopts redundant PSUs for AC PSU:
Rated voltage: 100 VAC to 240 VAC, 50 Hz or 60 Hz
Maximum tolerance: 90 VAC to 264 VAC, 50 Hz or 60 Hz
Maximum power output: 1200 W (Switch 8807)/2000 W (Switch 8810/Switch
8814)
Space RequirementsFor the sake of adequate ventilation and easy equipment maintenance, you are
recommended to keep one meter of clearance between the rear/front of the
switch cabinet and the wall surface or other devices. If the optional cabinet is
desired, the clear height of the equipment room must be more than 3 meters
inclusive.
Cabinet-Mounting
Requirements
Before cabinet-mounting the switch, make sure that the cabinet meets the
following requirements:
■ Better mount the switch in an open cabinet. However, if you want to mount it
in a closed cabinet, make sure of the availability of a good ventilation system.
■ Make sure that the cabinet stands steadily enough to support the weight of the
switch and the accessories.
■ Make sure that the switch fits the cabinet size. Leave some clearance beside
the left and right panels of the switch for chassis ventilation.
Installation Tools
n
Ta bl e 70 Required installation tools
Long tape, ruler (1 meter in length), marking pen, powder
marker, pencil
One percussion drill, several drill bits, one vacuum cleaner
Multimeter, 500V Meg-ohmmeter (used for measuring the
insulation resistance), error detector, optical power meter,
earth resistance tester
General
tools
Special tools
Meters
Measure and
lineation tools
Drills
Fastening tools
Small tools
Auxiliary tools
The instruments and tools are not shipped with the Switch 8800 Family and it is
up to the users to ensure their availability.
4
SWITCH INSTALLATION
The Switch 8800 Family shall be installed indoors in a fixed place.
Confirming
Installation
Preparation
Installation FlowFigure 33 Installation Flow
■ Make sure that you have read Chapter 3 Installation Preparation carefully.
■ All requirements mentioned in Chapter 3 Installation Preparation have been
met.
Start
Confirm preparations
Check installation site
Install cabinet
Install chassis and
other components
Connect PGND wire/power cord
Power distribution box in cabinet
Cabling rack and fan tray
Insert I/O modules or
Application modules
Connect cables to I/O modules
or Application modules
54CHAPTER 4: SWITCH INSTALLATION
Mounting the Switch
in User-Supplied
Cabinet
Cabinet Configuration
Guideline
c
CAUTION:
■ Even if no PoE external power supply is installed, it is recommended that you
reserve the PoE power supply slot (just cover a 4 U blank filler panel) in the
cabinet for later PoE expansion.
■ For components of 4 U or higher, such as chassis and PoE power supply, more
screws are required to secure the slide rails in the cabinet considering their
weight.
■ You can adjust the specific height of every slot as needed. The following
guideline is just for reference.
One Switch 8807 chassis in a cabinet
The components and their height are as follows (from bottom up):
■ Blank filler panel (2U)
■ Cabling frame (2U)
■ External PoE power supply (or blank filler panel if no external PoE power supply
is installed) (4U)
■ Blank filler panel (1U)
■ Back cabling frame (1U)
■ New Switch 8807 chassis (11U)
■ Blank filler panel (1U)
■ Cabling frame (2U)
Mounting the Switch in User-Supplied Cabinet55
Switch 8807 11U
Figure 34 One Switch 8807 chassis in a cabinet
(1) Blank filler panel (2) Cabling frame
(3) Backward cabling frame (4) Reserved for external PoE power supply
Guideline: The space marked in Figure 34 must be reserved, and the remaining is
at your disposal.
Two Switch 8807 chassis in a cabinet
The components and their height are as follows (from bottom up):
■ Blank filler panel (2U)
■ Cabling frame (2U)
■ External PoE power supply (or blank filler panel if no external PoE power supply
is installed) (4U)
■ Blank filler panel (1U)
■ Back cabling frame (1U)
■ Switch 8807 chassis (11U)
■ Blank filler panel (1U)
■ Cabling frame (2U)
■ Switch 8807 chassis (11U)
56CHAPTER 4: SWITCH INSTALLATION
Switch 8807 11U
Switch 8807 11U
Figure 35 Two Switch 8807 chassis in a cabinet
(1) Blank filler panel (2) Cabling frame
(3) Backward cabling frame (4) Reserved for external PoE power supply
Guideline: The space marked in Figure 35 must be reserved, and the remaining is
at your disposal.
One Switch 8810 chassis in a cabinet
The components and their height are as follows (from bottom up):
■ Blank filler panel (2U)
■ Cabling frame (2U)
■ External PoE power supply (or blank filler panel if no external PoE power supply
is installed) (4U)
■ Blank filler panel (1U)
■ Back cabling frame (1U)
■ Switch 8810 chassis (14U)
■ Blank filler panel (1U)
■ Cabling frame (2U)
Mounting the Switch in User-Supplied Cabinet57
Switch 8810 14U
Figure 36 One Switch 8810 chassis in a cabinet
(1) Blank filler panel (2) Cabling frame
(3) Backward cabling frame (4) Reserved for external PoE power supply
Guideline: The space marked in Figure 36 must be reserved, and the remaining is
at your disposal.
One Switch 8814 chassis in a cabinet
The components and their height are as follows (from top down):
■ Blank filler panel (2U)
■ Cabling frame (2U)
■ External PoE power supply (or blank filler panel if no external PoE power supply
is installed) (4U)
■ Blank filler panel (1U)
■ Back cabling frame (1U)
■ Switch 8814 chassis (17U)
■ Blank filler panel (1U)
■ Cabling frame (2U)
58CHAPTER 4: SWITCH INSTALLATION
Switch 8814 17U
Figure 37 One Switch 8814 chassis in a cabinet
Mounting the Switch in
(1) Blank filler panel (2) Cabling frame
(3) Backward cabling frame (4) Reserved for external PoE power supply
Guideline: The space marked in Figure 37 must be reserved, and the remaining is
at your disposal.
Take the following steps to install the Switch 8800 Family in a 19-inch cabinet.
the Cabinet
Step 1: Confirm before installation
■ Make sure that the cabinet has been well fixed. The layout inside the cabinet
for switch installation has been well done and there is no obstruction inside or
around the cabinet.
■ Make sure that the switch is ready for installation and has been carried to a
place convenient for further moving near the cabinet.
Step 2: Mount a shelf inside the cabinet depending on the position where you
want to put the switch.
Step 3: Install the cabling rack and attach the mounting ears shipped with the
switch onto the switch.
Step 4: Carry the switch at both sides with another person to the place in front of
the cabinet slowly.
Step 5: Lift the switch a little higher than the cabinet shelf, put it on the shelf, and
push it into the cabinet.
Connecting PGND
Wire and Power Cord
Connecting PGND Wire
Connecting PGND Wire and Power Cord59
Step 6: Align the mounting ears with the square holes in the posts of the cabinet,
and fasten the screws in the holes to fix the switch in the cabinet.
c
n
n
CAUTION: For the safety of operators and equipment, the switch must be well
grounded. The resistance reading between switch chassis and the ground must be
less than 1 ohm.
Common grounding environment
Step 1: Remove the screw from the grounding hole in the switch chassis.
Step 2: Wear the connector of the PGND wire accompanied with the switch on
the grounding screw.
Step 3: Insert the grounding screw into the grounding hole and screw it down.
Step 4: Connect the other end of the ground wire to the ground bar of the switch.
Generally, the cabinets installed in equipment rooms are equipped with ground
bar. In this case, you can connect the PGND wire of the switch to the ground bar
for it.
Other grounding environment
Following are some methods for grounding the switch in different grounding
environments that you are likely to encounter when installing the switch at
different places.
Rather than specifying the switch model or showing the actual location of the
switch power input or grounding screw, the following figures are primarily
intended for illustrating the switch grounding, either via grounding screw or
power input, in specific grounding environments.
■ If a ground bar is available, attach one end of the yellow-green PGND wire of
the switch to a grounding bolt of the ground bar and fasten the captive nuts.
Note that the fire main and lightning rod of a building are not suitable for
grounding the switch. The PGND wire of the switch should be connected to
the grounding device in the equipment room. (For the Switch 8800 Family, the
grounding screw is on the rear panel. Connect it as illustrated in
Figure 38).
60CHAPTER 4: SWITCH INSTALLATION
˄5˅
˄1˅
˄2˅
˄3˅
˄4˅
˄5˅
˄1˅
˄2˅
˄3˅
˄4˅
˄5˅
˄1˅
˄2˅
˄3˅
˄4˅
˄5˅
˄1˅
˄2˅
˄3˅
˄4˅
˄5˅
˄1˅
˄2˅
˄3˅
˄4˅
˄5˅
˄1˅
˄2˅
˄3˅
˄4˅
˄6˅
˄1˅
˄2˅
˄3˅
˄5˅
˄4˅
˄6˅
˄1˅
˄2˅
˄3˅
˄5˅
˄4˅
˄6˅
˄1˅
˄2˅
˄3˅
˄5˅
˄4˅
Figure 38 Ground the switch when ground bar is available
(1) Air filter (2) Grounding screw
(3) PGND wire (4) Ground bar of the equipment room
(5) Rear panel of the switch
■ If there is no ground bar but earth nearby and the grounding body is allowed
to be buried, you can simply hammer an angle iron or steel pipe no shorter
than 0.5 m into the earth. In this case, the yellow-green PGND wire should be
welded with the angle iron (steel pipe) and the joint should be processed
against eroding. (For the Switch 8800 Family, the grounding screw is on the
rear panel. Connect it as illustrated in
Figure 38).
Figure 39 Ground the switch when allowed to bury grounding body nearby
(1) Air filter (2) Grounding screw
(3) PGND wire (4) Ground bar of the equipment room
(5) Angle steel (6) Rear panel of the switch
■ If both ground bar and the conditions for burying the grounding body are not
available, an AC-powered Ethernet switch can be grounded using the PE wire
of the AC power supply. In this case, make sure that the PE wire of the AC
Connecting PGND Wire and Power Cord61
(1) (2)(5)
(3)(4)
(6)
(7)
(1) (2)(5)
(3)(4)
(6)
(7)
power supply has been well grounded at the power distribution room or AC
power supply transformer side.
Figure 40 Ground the switch via AC PE wire
(1) Live line (2) Neutral line
(3) PE line (4) 3-core AC input cable
(5) Transformer (6) AC power input
(7) Front panel of the switch
Connecting AC Power
Cord
c
CAUTION:
■ For lightning protection, the AC power should be led through an external
lightning device into the switch.
■ Make sure the power switch on the PSU is at OFF position before connecting
the power cord.
On the front panel of AC PSU, there is a plug-retention clamp.
Take the following steps to connect the AC power cord (coming with the switch)
to the Switch 8807/Switch 8810/Switch 8814:
Step 1: Turn the clamp at the left of the PSU front panel to the right.
Step 2: Insert the plug at one end of the AC power cord into the socket on the
PSU.
Step 3: Turn the clamp to the left until it grips the plug.
Step 4: Insert the other end of the power cord into an external power socket.
62CHAPTER 4: SWITCH INSTALLATION
(5)
Figure 41 Connect AC power cord to the Switch 8807
(1) Connector-retention clamp (2) Input LED
(3) Output LED (4) Fail LED
(5) Power switch
Figure 42 Connect AC power cord to the Switch 8810/Switch 8814
(1)
(2)
(3)
(4)
(5)
(1) Connector-retention clamp (2) Input LED
(3) Output LED (4) Fail LED
(5) Power switch
Connecting PGND Wire and Power Cord63
Connecting PoE Power
Cord
n
The Switch 8807/Switch 8810/Switch 8814 uses PSE4500-A external PoE power
supply, which is connected to the switch through the PoE module at the front
bottom of the switch to provide power to PDs (powered devices) under the switch.
This section only focuses on the cable connection between the external PoE
power supply and the Switch 8800 Family switch. For the installation of the
external PoE power supply, see the manual shipped with the power supply.
Grounding PoE chassis
You must ground the PoE chassis before connecting the PoE power cord to it.
Follow these steps:
Connect the 6 AWG cable of the wiring terminal (with M6 hole) to the grounding
screw on the rear panel of the switch, as shown in
Connect the other end of the cable to the grounding bar or other grounding
terminals.
Figure 43 Ground PoE chassis
Figure 43.
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(1) Chassis grounding screw
Connecting PoE power cable
Loosen the mounting screw of the PoE entry module with a cross screwdriver.
Insert the -48V OT terminal (blue) of the DC power cord to the NEG (-) terminal of
the PoE entry module and fasten the mounting screw; insert the other end to the
NEG (-) terminal of the external PoE power supply.
Insert the GND OT terminal (black) of the DC power cord to the RTN (+) terminal
of the PoE entry module and fasten the mounting screw; insert the other end to
the NEG (-) terminal of the external power supply.
CAUTION:
■ Observe the signs on devices and connect the cables correctly.
■ Choose right cables based on the load.
64CHAPTER 4: SWITCH INSTALLATION
Figure 44 Front panel of external PoE Power Rack (3C17509)
(1) DC output terminal: NEG(-) (2) DC output terminal: RTN(+)
(3) AC input switch (4) AC input socket
Installing Cabling RackFor your convenience, cabling racks are shipped with the Switch 8800 Family. Take
the following steps to install the rack.
Step 1: Face the I/O module slots of the switch;
Step 2: Attach the left mounting ear (the one with an elliptical hole on one surface
and a recessed hole on the other) onto the cabling rack and fix it with screws (one
cabling rack for Switch 8807/Switch 8810 and two for Switch 8814);
Step 3: Install mounting ears onto the both sides of the switch.
Figure 45 The position of the cabling rack
Installing Fan TrayThe fan tray is hot swappable.
Installing PoE Lightning Protection Box65
c
n
Installing PoE
Lightning Protection
Box
CAUTION: In case of bodily injuries, do not touch any naked wire, terminal or
other parts of the product with hazardous voltage labels.
Step 1: Wear the ESD-preventive wrist strap, making sure that it makes good skin
contact; take the fan tray out from the packing bag.
Step 2: Hold the fan tray in right direction (just check the direction of instructional
words, and if you insert it upside down, the plug of the fan tray cannot touch the
right socket inside the chassis), with one hand on its handle and the other hand at
its bottom the ejector levers on the fan tray with both hands and pull them
outward. Align the fan tray with the guides in the chassis and slide it gently into
the slot until its plug touches the chassis socket.
Step 3: Fasten the mounting screws on the panel of the fan tray with a screw
driver.
The above installation steps are just for replacing your fan tray, since the fan tray
is delivered together with the chassis and no initial installation is required.
The 3C17510 PoE Entry Module is hot-swappable.
c
CAUTION: Do not touch any exposed wires, terminals, and device parts marked as
hazard to avoid hurting your body.
1 Wear an ESD-preventive wrist strap and ensure it is well grounded. Unpack the
PoE lightning protection box, which is shown in
Figure 46 PoE Entry Module
Figure 46.
2 Keep the PoE Entry Module in the right direction, that is, correct letter direction
(do not turn it upside down, or you will not be able to fully insert it into the chassis
due to the limitation on the back structure of the box, nor can you fasten the
chassis fixing screw), hold it with one hand at the bottom and with another hand
66CHAPTER 4: SWITCH INSTALLATION
at the front panel, and then slide it smoothly along the guide rail to the slot, until
it fits into the chassis, with its plug fully touching the socket inside the chassis. See
Figure 47.
Figure 47 Install PoE lightning protection box
3 Fasten the screw on top of the PoE lightning protection box.
n
Installing I/O modulesThe I/O modules of the Switch 8800 Family are hot-swappable.
Generally, the PoE lightning protection box is shipped with the chassis of the
switch you ordered. So you need not to install the box. The above installation
procedure is needed only when you are changing the fan frame.
Step 1: Wear the ESD-preventive wrist strap, making sure that you have grounded
it well. Take the I/O module out of the packing bag.
Step 2: Unscrew the mounting screws holding the blank filler panel in the slot
where you plan to install the I/O module, and remove the panel from the slot.
Step 3: Hold the ejector levers on the fan tray with both hands and pull them
outward. Align the I/O module with the guides in the chassis and slide it gently
into the slot until the positioning pin of the I/O module touches the hole in the
chassis.
Step 4: Pull the ejector levers inward, locking the positioning pin into the hole.
Step 5: Fix the I/O module by fastening the mounting screws on the I/O module
with a screw driver.
n
Put the removed blank filler panel away for future use.
For the Switch 8800 Family, the Application Module can be installed in the I/O
module slot in the same way as installing the I/O module board.
Connecting Interface
Enlarged A side
Pos. 25
A
DB 25 Female
8P8C Plug
Enlarged B side
Pos.1
Pos.8
DB9 Female
Enlarged C side
Pos.1
Pos.9
C
Pos.1
B
Cables
Connecting Interface Cables67
Connecting Console
Cable
Introduction
Console cable is an 8-core shielded cable. At one end of the cable is a crimped
RJ-45 connector that is to be plugged into the console port of the switch. At the
other end of the cable are a DB-9 (female) connector and a DB-25 (female)
connector. You can plug either of them into the 25-pin (male) or 9-pin (male) serial
port on the console terminal as needed. The following figure illustrates the
console cable.
Figure 48 Console cable
Ta bl e 71 Console cable pinouts
RJ-45 Signal Direction DB-25 DB-9
1 RTS ←4 7
2 DTR ←20 4
3 TXD ←2 3
4 CD →8 1
5 GND − 7 5
6 RXD →3 2
7 DSR →6 6
8 CTS →5 8
Connecting console cable
Take the following steps to connect the console cable, when configuring the
switch on the terminal.
Step 1: Plug the DB-9 or DB-25 female connector of the console cable into the
serial port of the PC/terminal where the switch is to be configured.
Step 2: Connect the RJ-45 connector of the console cable to the console port of
the switch.
68CHAPTER 4: SWITCH INSTALLATION
Enlarged A side
Pos.1
Pos.25
DB25 Male
A
DB9 Male
Label
8P8C PLUG
B
Enlarged B side
Pos.1Pos.8
Enlarged C side
Pos.9
Pos.1
C
n
remove the console cable into or from the PC serial port.
When connecting the console cable, first connect the DB9/DB25 end to the PC
serial port and then the RJ45 end to the console port of the switch. And removing
the console cable is just in inverse order.
When removing the console cable, first remove the RJ-45 end and then the
DB9/DB25 end.
Connecting AUX CableYou need an AUX cable when configuring the Switch 8800 Family with the remote
modem dial-up approach.
Introduction
AUX cable is an 8-core shielded cable. At one end of the cable is an
RS-232-compliant RJ-45 connector that can be plugged into the console port of
the switch. At the other end are DB-9 (male) connector and DB-25 (male)
connector. You can plug either of them into the DB-9 (female) or DB-25 (female)
port of the modem as needed. The following figure illustrates the AUX cable.
Figure 49 AUX cable
The PC serial port is not hot-swappable, so you are not allowed to insert or
Ta bl e 72 AUX cable pinouts
RJ-45 Signal Direction DB-25 DB-9
1 RTS →4 7
2 DTR →20 4
3 TXD →2 3
4 CD ←8 1
5 GND - 7 5
6 RXD ←3 2
7 DSR ←6 6
Connecting Interface Cables69
PIN #8
PIN #1
Table 72 AUX cable pinouts
RJ-45 Signal Direction DB-25 DB-9
8 CTS ←5 8
Connecting AUX cable
Step 1: Plug the RJ-45 connector of the AUX cable into the AUX port of the
switch.
Step 2: Plug the DB-25 (male) or DB-9 (male) connector at the other end into the
serial port of the analog modem.
Connecting Category-5
Shielded Cable
Connecting Fiber
n
Introduction to RJ-45 connector
Being RJ-45 connector, the 10Base-T/100Base-TX port of the Switch 8800 Family
supports MDI/MDIX auto-sensing and will be connected using the category-5
shielded cable. The following figure illustrates an RJ-45 connector.
Figure 50 RJ45 connector
Connecting category-5 shielded cable
Step 1: Plug one end of the network cable into the desired Ethernet RJ-45
connector on the switch.
Step 2: Plug the other end of the cable into the RJ-45 port of the peer device.
All the megabit and gigabit optical modules available for the Switch 8800 Family
are SFP modules that provide LC user ports.
Introduction to fiber connector
n
■ When selecting a fiber network facility, make sure that the type of the
connector and the fiber match the adopted optical port.
■ Before connecting the fiber, make sure that the receive-end optical power does
not exceed the upper threshold of the receiving optical power. Excessive
receiving optical power is very likely to burn the optical module.
Fiber connectors are indispensable passive components in an optical fiber
communication system. Their application allows the removable connection
between optical channels, which makes the optical system debugging and
maintenance more convenient and the transit dispatching of the system more
flexible. Among various fiber connectors, only LC connector will be introduced
here.
■ LC fiber connector
70CHAPTER 4: SWITCH INSTALLATION
Figure 51 LC connector
Connecting fiber
Step 1: Plug one end of the fiber into the SFP optical module of the Switch 8800
Family.
Step 2: Connect the other end of the fiber into the corresponding device.
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Cable Routing
Recommendations
Freestanding Switch on
Tabletop
Cabinet-Mounting
Switch
CAUTION: When the optical interface has not been connected with a fiber
connector or its dust-proof mesh is open, there might be some invisible radiation
emitted from the optical interface. So do not look into the optical interface
directly.
Cover the optical interface if there is no connector plugged in.
For only selling an integrated chassis, you do not have to care about the cabling
inside or outside the cabinet. All the I/O module cables are routed from the left
side of the chassis (along the cabling channel), and the chassis power cords
(AC/DC power cords) are routed in the front of the chassis.
If the switch is mounted in a 19-inch standard cabinet or B68-22 cabinet, the I/O
module cables are bound on the cabling rack at the left side of the chassis and are
routed up or down to pass through the chassis top or the raised floor depending
on the available equipment room condition (that is, the signal cables are routed
into the chassis either from the cabling rack on the chassis top or from the cabling
trough under the floor) of the exchange office. The power cords run along the
left-front of the chassis and out of the chassis either from the top or the raised
floor depending on the equipment room conditions (DC power distribution
cabinet, lightning protection box, and terminal block, etc.) of the exchange office.
Cable Management
Cable Management
Requirements
■ Bundle and put the cables inside the cabinet in a straight and neat way. No
intertwinement or bending is allowed.
Cable Management71
Intertwined
Bent
Intertwined
Bent
Figure 52 Cable bundling example I
■ The bending radius of cable body cannot be less than twice of the cable
diameter. The bending radius of the cable cannot be less than 5 times of its
diameter at the place where it is led out of the connector;
■ Different cables (power cord, signal cable, PGND wire, etc.) should be cabled
and bundled separately rather than together in the cabinet. If they are close to
each other, you can cable them in cross-shape. For parallel cabling, the space
between power cord and signal cable should be no less than 30 mm (1.2 in);
■ The cable binding rack and cabling channel inside and outside the cabinet
should be smooth and without sharp edges or tips;
■ The metal cable management hole should have a smooth and fully rounded
surface or wear a insulating bush;
■ Use the right type of ties to bundle the cables. Do not bundle cables with
joined ties. 3Com Corporation provides the following types of ties: 100 x 2.5
mm (3.9 in x 0.1 in), 150 x 3.6 mm (5.9 x 0.1 in), 300 x 3.6 mm (11.8 x 0.1 in),
530 x 9 mm (20.9 x 0.4 in), and 580 x 13 mm (22.8 x 0.5 in);
■ Cut the extra parts of the ties neatly after bundling the cables, leaving no sharp
or angular tips. See the following figure:
Figure 53 Cable bundling example II
72CHAPTER 4: SWITCH INSTALLATION
Flat
washer
Flat
washer
Spring
washer
Nut
Flat
washer
Flat
washer
Spring
washer
Nut
■ Bundle the cables wherever cable bending cannot be avoided. However, the
Figure 54 Cable bundling example III
■ The spare cables or excessive cable parts should be folded and bundled and
cable ties cannot be placed inside the bending area in case of the likelihood of
cable core break due to excessive stress. See the following figure.
placed at a right place in the cabinet or on the cabling channel. A “right place”
refers to the place where the cables will not affect the operation of the device
or impair the device, or be damaged;
■ The power cords cannot be tied on the guides of any mobile components;
■ Reserve some redundancy for the cables connecting to the mobile parts, the
PGND wire of the door for example, to free the cables from possible stress.
Such a mobile part should be installed in such a way that the extra cable
segments will be kept from contacting the heat source, sharp points or edges.
Use high temperature cables near the heat sources;
■ For the cable terminals fixed using screw threads, the screws or nuts should be
securely fastened and prevented from loosing. See the following figure;
Figure 55 Cable fixing example
Verifying the Installation73
■ When using a hard power cord, fix it near its terminal so as to free the terminal
and the cable from stress;
■ Do not use tapping screws to fasten the connecting terminals;
■ The power cords of the same type and in the same direction should be bundled
together and kept neatly and straight;
The following table lists the requirements in the bundling with cable ties.
Ta bl e 73 Tie-binding parameters
Cable bundle diameter (mm) Space between bundles (mm)
10 80 to 150
10 to 30 150 to 200
30 200 to 300
■ No cable or bundle can tie a knot;
■ The metal parts of the crimped cold-pressed terminal blocks (such as air switch)
cannot stretch beyond the blocks.
Verifying the
Installation
c
CAUTION: Confirm that you have turned off the power before checking,
otherwise, improper connection will hurt people or impair the components of the
switch.
After installing the switch, verify the installation by the following list, ensuring all
the checking results are normal.
Ta bl e 74 Installation checking list
Item Normal Abnormal (Description)
ESD-preventive wrist strap
Console cable
PGND wire
Power cord
fabric
I/O module/Application
Module
Fan tray
PSU
74CHAPTER 4: SWITCH INSTALLATION
5
DEBUGGINGTHE SYSTEM
Setting up
Configuration
Environment
Connect a terminal (a PC in Figure 56) to the switch with a console cable.
Figure 56 Networking environment for switch configuration
Switch
To the console port
To the serial port
Console cable
PC
Connecting the Cables
Setting the Terminal
Parameters
1 Insert the DB-9 (or DB-25) female connector of the Console cable into the serial
port on the PC (the Console terminal).
2 Insert the RJ-45 connector of the cable into the Console port on the switch.
Set baud rate to 9600, data bits to 8, parity check to none, stop bits to 1, flow
control to none, and terminal emulation to VT100.
This section will tell you how to set the terminal parameters, taking a PC running
Windows 98 Hyper Terminal as an example.
Step 1: Start PC, and run terminal emulation program (such as Terminal of
Windows3.1, or Hyper Terminal of Windows 95/Windows 98/Windows
2000/Windows NT/Windows XP/Windows ME) on PC.
Step 2: Set parameters in the Hyper Terminal of Windows98.
76CHAPTER 5: DEBUGGINGTHE SYSTEM
You must set the baud rate to 9600, data bits to 8, no parity check, stop bit to 1,
and flow control to none, and select VT100 for terminal emulation. Specifically,
1 Click Start→Programs→Accessories→Communications→HyperTerminal to
access the Hyper Terminal window. The Connection Description dialog box
displays.
2 Click the red phone icon in the window to set up a new connection.
3 Enter the name of the new connection in the Name field and OK. The Properties
dialog box displays.
4 Select the target serial port to be used in Connect using field, and click OK. The
Port Settings Properties dialog box display.
5 Set the connecting serial interface parameters. Set the bits per second to 9600,
data bits to 8, Parity to None, stop bits to 1, and flow control to None, then click
OK. The HyperTerminal dialog box displays.
6 Select File→Properties to access the 3Com Properties Window.
7 Click the Settings tab, select VT100 for terminal emulation, and click OK to
confirm the settings.
n
Powering and Booting
the Switch
Verifying Installation
before Powering the
Switch
c
It is recommended that you set the function, arrow, and Ctrl keys to act as
Windows keys.
You should verify the installation of the switch before powering it on, to make
sure that:
■ The switch is stable enough.
■ All the boards have been correctly installed.
■ All the communication cables, fibers, power cords, and grounding wires are
correctly connected.
■ The proper power voltage is used as required by the switch.
■ The Console cable has been correctly connected, the PC or terminal for
configuration has been in service and all the required terminal parameters have
been set.
CAUTION: Before powering on the switch, locate the position of the power
switch for the equipment room where you will operate so that you can switch off
the power supply promptly if needed.
Powering on the Switch■ Turn on the power switch of the power source providing power to the switch.
■ Turn on the power switch.
Verifying after Power-on
(Recommended)
To ensure the configuration works that you will make on the switch, you are
recommended to check the switch after powering it on to make sure that:
■ The cooling system is working. In this case, you can hear the noise caused by
fan rotation and feel that there is air exhausted out.
Powering and Booting the Switch77
■ All the system LEDs on the fabrics function normal.
Boot InterfaceThe Switch 8807 is used as an example in this section.
The following is the information that will be output at the Console terminal when
you power on the switch.
ZBB_TEST
Starting...
******************************************
* *
* 3Com Switch 8800 Family Bootrom, Version 106 *
* *
******************************************
Copyright(C) 2001-2005 by 3Com CORPORATION
Creation date: Jun 6 2003, 19:28:01
CPU type : MPC755
CPU L2 Cache : 1024KB
CPU Clock Speed : 400MHz
BUS Clock Speed : 100MHz
Memory Size : 512MB
Flash file system init....done
Switch 8800 Family 3C17508 board self testing.....................
The board is steady
SlotNo of this 3C17508 is 0
BootRom main system CRC check is OK
82559 register testing is OK
EPLD1 testing is OK
EPLD2 testing is OK
16c2552 register testing is OK
Starting at 0x10000...
User interface Con 0 is available
Press ENTER to get started.
n
The above prompt information appears when the switch completes its boot
sequence. Press Enter to begin configuring the switch.
The Switch 8800 Family provide abundant command views. For more information
about the configuration commands and the Command Line Interface (CLI), see
3Com Switch 8800 Family Routing Switches Operation Manual.
78CHAPTER 5: DEBUGGINGTHE SYSTEM
SWITCH MONITORINGAND
6
MAINTENANCE
Monitoring the SwitchAlthough the Switch 8800 Family has undergone a comprehensive factory test
before delivery, an improper installation may cause problems. This chapter
describes how to troubleshoot the Switch 8800 Family.
Troubleshooting Console
Te rm in al
If the system running properly, when you power on the switch, you will see the
boot information on the console terminal. If the switch is configured incorrectly,
the console terminal may display illegible output or nothing at all.
If the console does not display anything after you power on the switch, check that
the:
■ Power system is working normally.
■ Fabric is working normally.
■ Console cable is connected to the console port on the fabric.
If you find no issues with these items, the problem is most likely one of the
following:
Troubleshooting the PSU
■ The console cable is not connected to the right serial port. That is, the port in
use is not the one configured on the terminal.
■ There are console terminal parameter errors. (According to the parameter
setting requirements, you should set the baud rate to 9600, data bits to 8,
parity to None, stop bits to 1, flow control to None, and select VT100 as your
terminal emulation protocol.)
■ The console cable is not in good condition.
If the terminal displays illegible characters, it is most likely a console terminal
setting error. Check that you have set the baud rate to 9600, data bits to 8, parity
to None, stop bits to 1, flow control to None, and select VT100 as your terminal
emulation protocol.
Ta bl e 75 LEDs on the PSU
LED Description
INPUT It stays ON if the power input is normal and the PSU switch is at the ON position.
It stays OFF if the power input has failed or if there is no power input at all.
OUTPUT It stays ON if the power output is normal, otherwise it is OFF.
FAIL It stays ON if the PSU has failed, otherwise it is OFF.
80CHAPTER 6: SWITCH MONITORINGAND MAINTENANCE
The following PSU faults may appear on the switch. Follow the instructions
provided to resolve the problem.
Display Power Command Indicates the PSU is Not in Position
The Input LED (green) and Output LED (green) stay ON, but the display power
command shows that the PSU is not in position (but the other PSU operates
normally). This problem is likely caused by a poor connection (badly seated)
between the PSU and the backplane. To correct this:
1 Switch off the power supply
2 Loosen the screws on the PSU
3 Push the PSU into the chassis a little bit
4 Tighten the screws
5 Switch on the power supply to check that the normal state is resumed
The Input LED (green) and Output LED (green) are OFF
Check that the power cords are connected correctly, the power cords are in good
condition, and the power switch has been put in the ON position.
w
Troubleshooting Fan
Tray
The Fail LED (red) is ON
Check that the:
■ Correct power voltage is in use (90 to 264VAC, 50-60 Hz for AC PSU).
■ Air filter protecting the fan tray is clean. Excessive dust accumulated on the air
filter may block the fan tray from free ventilation and can lead to power supply
failure.
If the problem persists, contact 3Com technical support engineers. Do not
disassemble the PSU yourself.
The Switch 8800 Family provides two LEDs on the fan tray as described in
Ta bl e 76.
Ta bl e 76 Fan tray LEDs
Indicator State description
RUN Green indicates that the fan tray is operating normally.
OFF indicates that the fan tray has failed.
ALM Red indicates that the fan tray has failed.
OFF indicates that the fan tray is in operating normally.
n
The ALM LED on the fan tray stays ON for two to three seconds when the switch is
powered on.
If the RUN LED is OFF, check that:
■ The fan tray has been well seated.
■ All the cables connecting the fan tray to the backplane are connected and are
in good condition.
Hardware Maintenance81
■ The fans are working normally.
■ The rotation of the fans has not been blocked.
■ The blank filler panels have been inserted into the I/O module slots.
Troubleshooting I/O
Hardware
Maintenance
Module
The Switch 8800 Family provides I/O moduleX LEDs on the fabric so that you can
check the state of these I/O modules.
Ta bl e 77 I/O Module LEDs
Indicator State description
RUN ON indicates an I/O module failure.
OFF indicates that the I/O module has failed or it is not in position
at all.
Blinking indicates that the I/O module is working normally.
ALM OFF indicates that there is no I/O module alarm or that the I/O
module is not in position at all.
ON indicates that there is an I/O module alarm.
2~6 (Switch 8807)
0~3, 6~9 (Switch 8810)
0~5, 8~13 (Switch 8814)
On the Switch 8807, I/O module 0 through I/O module 4
respectively correspond to slots 2 through 6.
On Switch 8810, I/O module 0 through I/O module 7 respectively
correspond to slots 0 through 3 and 6 through 9.
On Switch 8814, I/O module 0 through I/O module 11 respectively
correspond to Slots 0 through 5 and 8 through 13.
Replacing AC PSU
c
CAUTION: The Switch 8800 Family’s PSU is hot-swappable. Refer to the
document entitled “3Com Switch Family Safety and Regulatory Information,” part
number 10015300, for information about how to install and set up your switch
safely. Also:
■ The Switch 8800 Family uses multiple power systems, and you must turn off all
of them when removing the AC PSU.
■ The PSU of the Switch 8800 Family is heavy. Use both hands to pull it out
slowly and gently, with one holding its handle and the other holding its
bottom.
■ If you are not installing a replacement PSU, insert a blank filler panel into the
PSU slot so that dust cannot get into the unit and to allow proper ventilation
Removing an AC PSU
To remove an AC PSU:
1 Change the power switch on the PSU from the ON position into the OFF position.
2 Pull right the clamp holding the power cord connector and unplug the power
cord.
3 Unscrew the screws on the both sides of the PSU panel with a flathead
screwdriver.
82CHAPTER 6: SWITCH MONITORINGAND MAINTENANCE
4 Hold the handle of the PSU and pull the PSU gently out of the chassis along the
guides.
Figure 57 Remove and install the AC PSU
Installing an AC PSU
1 Hold the handle of the PSU with one hand and the bottom of the PSU with
another hand, and gently slide the PSU into the chassis along the guides until it is
secure in the backplane.
Replacing and Cleaning
the PCU’s Air Filter
c
2 Fasten the screws at both sides of the PSU panel with a flathead screwdriver.
3 Check that the power switch on the panel is in the “OFF” position and the clamp
holding the power cord connector is pulled up.
4 Insert the AC power cord included with the switch into the socket on the PSU.
5 Pull the clamp down to hold the power cord.
This section describes how to clean and replace the Switch 8800’s AC PSU air filter.
CAUTION: We strongly recommend that you clean the air filter semimonthly to
guarantee adequate ventilation.
Removing and cleaning the air filter of PSU
1 Hold the air filter by the upper and lower edges with your index finger and thumb.
2 Gently pull the air filter out of the chassis.
3 Take the black air filter mesh out.
4 Clean and dry (but do not rub) the mesh.
5 Place the dry black mesh back into position.
Hardware Maintenance83
Figure 58 Remove the air filter of AC PSU
(1) PSU (2) Air filter (3) Air filter cover
Installing the air filter of PSU
To install the PCU’s air filter:
Replacing and Cleaning
the Chassis’s Air Filter
c
1 Ensure that the black mesh is contained within the air filter cover.
Figure 59 Installing the PSU Air Filter
2 Hold the air filter cover by the upper and lower edges with your index finger and
thumb and push it inside the PSU.
CAUTION: We recommended that you clean the air filter semimonthly to
guarantee adequate ventilation.
You install the Switch 8800’s air filter at the chassis’s air intake vents. If you do not
clean the air filter often, the accumulated dust blocks the filter’s holes and affects
the chassis’s ventilation. Use one of the following two methods to clean the filter,
but do not rub the air filter when you wash it. Allow it to air dry.
84CHAPTER 6: SWITCH MONITORINGAND MAINTENANCE
Removing and Cleaning the Chassis’s Air Filter
1 Unscrew the screws at the top and bottom of the air filter with a flathead
screwdriver.
2 Hold the air filter at the left-rear by its upper and lower edges, pull part of it out of
the chassis, put one hand underneath the air filter to hold it, and pull it out slowly
along the guides.
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Replacing a ModuleThe Switch 8800’s fabric, I/O modules, and application modules are similar in
CAUTION: Because the air filter is rather long, you should hold its front end with
one hand, and bear its weight by putting another hand underneath it when sliding
the air filter out of the chassis.
3 Rather than taking the air filter mesh out, directly wash the air filter after removing
it from the chassis, allow it to air dry, and insert it back into the chassis.
Installing the Chassis’s Air Filter
1 Hold the front end of the air filter with one hand and put the other hand
underneath it, align it with the guides, and slide it into the chassis along the
guides.
2 Fix the air filter by fastening the screws at the top and bottom of the air filter with
a flathead screwdriver.
CAUTION: As the air filter is rather long, you should hold its front end with one
hand, and bear its weight by putting another hand underneath it when sliding the
air filter into the chassis.
structure and you can install and remove them in the same way. This section
describes the general procedures for removing and installing these modules.
The Switch 8800 Family modules are hot-swappable.
Required tools
■ ESD-preventive wrist strap
■ Screwdriver
Removing a Module
To remove a module:
1 Wear the ESD-preventive wrist strap and unscrew the screws on the module with a
flathead screwdriver.
2 Hold the ejector levers on the module with both hands and press them outward to
separate the module’s locking pin from the backplane.
3 Gently pull the module out of the slot along the guides.
Figure 60 Removing a Module
Replacing the Fan Tray
Hardware Maintenance85
Installing a Module
1 Wear the ESD-preventive wrist strap and unscrew the mounting screws fixing the
blank filter panel in the slot where you want to install the module, and remove the
blank filler panel.
2 Hold the ejector levers of the card with both hands and pull them outward, align
the card with the guides in the chassis, and slide it gently into the slot until its
positioning pin touches the positioning hole in the chassis.
3 Pull the ejector levers inward to lock the positioning pin of the card into the
positioning hole in the chassis.
4 Fasten the screws to fix the card.
Figure 61 Installing a Module
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CAUTION: To avoid bodily injury, do not touch exposed wires, terminals, or the
switch parts where a dangerous voltage warning label is indicated.
Required tools
■ ESD-preventive wrist strap
■ Screwdriver
Replacing the Fan Tray
To replace the fan tray:
1 Wear the ESD-preventive wrist strap.
2 Remove the screws from both sides of the fan tray.
3 Pull the fan tray out with one hand on the top and the other hand around the
handle of the fan tray to separate the fan tray positioning pin from the backplane.
CAUTION: When you replace the fan tray of an operating switch, pull the fan tray
out from the chassis only after the fans stop rotating. In this case, there is still the
possibility that fans are still rotating. Therefore do not put your hand into the fan
tray to avoid bodily injury.
4 Gently pull the fan tray out of the slot along the guides and place fan tray into the
packing bag.
5 Hold the fan tray’s handle with one hand and its bottom with the other and pull
them outward.
6 Align the fan tray with the guides in the chassis and slide it gently into the slot
until its positioning pin touches the positioning hole in the chassis.
7 Insert screws on both sides of the fan tray.
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CAUTION: Install a new fan tray soon after removing the old one to ensure that
the switch operates normally.
86CHAPTER 6: SWITCH MONITORINGAND MAINTENANCE
Upgrading the
Software
Required cables■ Console cable (for serial interface)
This section describes how to updated the software on the Switch 8800.
■ One crossover and one standard network cables
■ Debug cable (for serial interface)
To upgrade the software:
1 Confirm that the host program is loaded before initiating the software upgrade.
2 Check the current version of the host and Boot ROM programs.
3 Back up the current host program, Boot ROM program, and configuration file (to
you PC) so that you can roll back a failed upgrade.
4 Load the host and Boot ROM program files to the switch. If the switch has two
fabrics, you can copy the host and Boot ROM program files to the standby fabric.
5 Upgrade the Boot ROM program on the fabric and I/O module (optional).
6 If the switch has two fabrics, specify the load programs for the active and standby
fabrics.
7 Reboot the switch.
8 Check that the board version is correct.
Upgrading Locally
through the Boot Menu
9 Load the software through command line interface (CLI) or the Boot menu. You
can load it through CLI using FTP or TFTP. You can load it locally from the Boot
menu using:
■XModem and through Console port
■TFTP and through Ethernet port
■FTP and through Ethernet port
Each method is described below.
After powering on the switch, run the Boot ROM program. The terminal displays
the following information:
ZBB_TEST
Starting...
*************************************************
* *
* 3Com Switch 8800 Family Bootrom, Version 109
*
* *
*************************************************
Copyright(C) 2001-2005 by 3Com CORPORATION
Creation date: Dec 9 2003, 16:19:42
CPU type : MPC755
CPU L2 Cache : 1024KB
CPU Clock Speed : 400MHz
BUS Clock Speed : 100MHz
Memory Size : 512MB
Flash file system init....done
Board type: Switch 8800 Family 3C17539
Upgrading the Software87
Board self testing...........................
The board is steady
SlotNo of this board is 6
The MCX is exist
BootRom main system CRC check is OK
82559 register testing is OK
EPLD1 testing is OK
EPLD2 testing is OK
16c2552 register testing is OK
The switch Mac address is 00e0.fc00.1111
Press Ctrl+B to enter Boot Menu... 5
Password :
1 Press <Ctrl+B> as prompted to display the system Password : prompt.
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appearance of the “Press Ctrl-B to enter Boot menu...” prompt. Otherwise, the
program decompression process begins. To access the Boot menu after the switch
enters the program decompression process, you need to restart the switch.
2 Enter the Boot ROM password (the switch’s default is no password). The Boot
menu displays as follows:
CAUTION: Make sure you have Boot ROM password.
To enter the Boot menu, you must press <Ctrl+B> within five seconds after the
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MAIN MENU
1. Boot with default mode
2. Boot from Flash
3. Boot from HardDisk
4. Enter serial submenu
5. Enter ethernet submenu
6. Modify Flash description area
7. Modify bootrom password
0. Reboot
Enter your choice(0-7):
3 Ensure that the upgraded host program is compatible with the existing I/O
module’s Boot ROM program. Otherwise, you must upgrade it during a host
program upgrade.
4 When loading the host program through the Boot menu, configure the serial
interface’s attributes as shown in
Figure 62. Otherwise, the Hyper Terminal does
not respond.
88CHAPTER 6: SWITCH MONITORINGAND MAINTENANCE
Figure 62 Hyper Terminal serial interface attribute settings
Upgrading software
through console port
(XModem)
XModem is a file transfer protocol used for its simplicity and performance. It
transmits files through serial interfaces, supporting 128 bytes and 1Kbytes in data
units, checksum and CRC checking modes, and multiple transmissions attempts
(usually 10 attempts) when packet errors are found.
XModem completes the transmission by the receiving program (receiver) and the
sending program (sender). In XModem, the transmission begins by sending
negotiation characters from the receiver for the purpose of check mode
negotiation. After passing the negotiation, the sender is allowed to send the first
data packet. Upon receiving the complete packet, the receiver checks the packet
using the agreed upon check mode and sends an ACK if the packet has passed
the check and a NAK if it did not. After receiving the ACK, the sender sends the
next packet; if it receives a NAK, the sender retransmits the previously sent packet.
To run the Xmodem application:
1 In the Boot menu, type 4, press Enter, and the system accesses the serial interface
submenu as follows:
SERIAL SUBMENU
1. Download file to SDRAM through serial interface and boot
2. Download file to Flash through serial interface
3. Download file to HardDisk through serial interface
4. Modify serial interface boot parameter
0. Return to main menu
Enter your choice(0-4):4
Upgrading the Software89
2 Ty pe 4 in the serial interface submenu and press Enter to set the serial interface
download parameters from the following menu:
1: 9600(default)
2: 19200
3: 38400
4: 57600
5: 115200
please select an appropriate baudrate:
Enter your choice(1-5): 5
3 Select the download speed as needed. For example, enter 5 to select the
download speed of 115200 bps, then press Enter. The system displays the
following information:
BaudRate is 115200 bps. Please change the terminal’s speed to 115200
bps
4 Change the baud rate on the Console terminal to match your specification,
disconnect the terminal, connect it again, then press Enter. The terminal displays
the serial interface submenu again:
SERIAL SUBMENU
1. Download file to SDRAM through serial interface and boot
2. Download file to Flash through serial interface
3. Download file to HardDisk through serial interface
4. Modify serial interface boot parameter
0. Return to main menu
Enter your choice(0-4):2
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■ After changing the baud rate, you must close the terminal emulation program
and start it again at least once in order to validate the new baud rate.
■ In Windows 98, you can disconnect and reconnect the terminal after changing
the baud rate. In Windows 2000, you must disconnect the terminal before
setting the baud rate and reconnect the terminal after it is complete.
5 Choose where you wish to store the downloaded file. For example, enter 2 to
download the file into the switch’s Flash memory then, press Enter. The system
displays the following information as it is downloading the file:
Please Select File .
XMODEM downloading ...CCC
6 Select [Transfer/Send File] in the terminal window. The Send File dialog box
appears as shown in
Figure 62.
7 Click Browse, and select the application, and change the protocol to XModem.
90CHAPTER 6: SWITCH MONITORINGAND MAINTENANCE
Figure 63 Send File dialog box
8 Click Send. The Xmodem dialog box displays.
9 After downloading the program successfully, the system begins to write the data
into the Flash memory. When the download is finished, the serial interface displays
the following submenu again.
---------------------------------------------------------------Done
Free flash Space : 15862784 bytes
Writing flash------------------------------------------------------
-------------------------------------------------------Done
SERIAL SUBMENU
1. Download file to SDRAM through serial interface and boot
2. Download file to Flash through serial interface
3. Download file to HardDisk through serial interface
4. Modify serial interface boot parameter
0. Return to main menu
Enter your choice(0-4):
Upgrading the Software
Using TFTP
n
Trivial File Transfer Protocol (TFTP) transmissions are initiated by the client. When
downloading a file, the client sends a read request packet to the TFTP server,
receives the data packets from the server, and sends the ACK to the server. When
uploading a file, the client sends a write request packet to the TFTP server, then
sends the data packets to the server, and receives the ACK from the server. The
TFTP transmission files have two forms; binary for program transmission and ASCII
for text transmission.
To upgrade the software using TFTP perform the following steps.
This procedure uses a Switch 8814 work as the TFTP client.
1 Connect the switch to a PC where the file is located using the
management/upgrade Ethernet port. (You need the IP address of the PC. At the
same time, connect the switch to an external PC (that can be the same one that
contains the file) using the console port.
2 Run the TFTP server program on the PC connected to the management/upgrade
Ethernet port and specify the path for upgrading the application files.
3 Run the terminal emulation program on the PC connected to the console port,
and boot the switch to access the Boot menu.
Upgrading the Software91
4 Enter 5 at Boot menu prompt and press Enter. The system displays the download
application program menu:
ETHERNET SUBMENU
1. Download file to SDRAM through ethernet interface and boot
2. Download file to Flash through ethernet interface
3. Download file to HardDisk through ethernet interface
4. Modify ethernet interface boot parameter
0. Return to main menu
Be sure to select 4 to modify boot parameter before downloading!
Enter your choice(0-4): 4
5 Enter 4 to select TFTP for upgrading the software and press Enter to set the
related TFTP parameters:
Note: Two protocols for download, tftp & ftp.
You can modify the flags following the menu.
tftp--0x80, ftp--0x0.
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TFTP and to 0x0 if you are using FTP.
’.’ = clear field; ’-’ = go to previous field; ^D = quit
boot device :fei0
processor number :
host name : 8500 ,
file name : 8500.app
inet on ethernet (e) : 1.1.1.1
inet on backplane (b):
host inet (h) : 1.1.1.2
gateway inet (g) :
user (u) :
ftp password (pw) (blank = use rsh):
flags (f) :0x80
target name (tn) :
startup script (s) :
other (o) :
Write flash...done!
6 After you provide the required information, the system accesses the Ethernet
interface submenu appears again:
ETHERNET SUBMENU
1. Download file to SDRAM through ethernet interface and boot
2. Download file to Flash through ethernet interface
3. Download file to HardDisk through ethernet interface
4. Modify ethernet interface boot parameter
0. Return to main menu
Enter your choice(0-4): 2
The message prompts you to set the flags to 0x80 when you download files using
7 Specify where you wish to download the file (2 if you which to download the file
to Flash), press Enter. Upon successful completion, the system display the
following information:
Attached TCP/IP interface to fei0.
Attaching network interface lo0... done.
boot device : fei0
unit number : 0
processor number : 0
host name : 8500
file name : 8500.app
8 The system accesses the Ethernet interface submenu again as shown below.
ETHERNET SUBMENU
1. Download file to SDRAM through ethernet interface and boot
2. Download file to Flash through ethernet interface
3. Download file to HardDisk through ethernet interface
4. Modify ethernet interface boot parameter
0. Return to main menu
Enter your choice(0-4):
Upgrading software
Using (FTP)
n
n
The Switch 8800 Family applications can also be updated through the Ethernet
port using FTP.
This procedure uses a Switch 8814 work as the FTP client.
1 Connect the switch to the PC containing the file using the management/upgrade
Ethernet port. (You need the IP address of the PC.) Connect the switch to an
external PC (that can be the same one that contains the file) through the console
port.
2 Run the FTP server on the PC connected to the management/upgrade Ethernet
port. Specify the path to the upgrade file and set the login username and
password.
3 Run the terminal emulation program on the PC connected to the Console port,
and boot the Switch to access the Boot menu.
4 See the corresponding steps (4 through 8) in the upgrading procedure using TFTP
above.
If you want to download files using FTP, please set the flags to 0x0 when setting
the Ethernet interface parameters.
5 After downloading the host program through the Boot menu, you must specify it
as the next boot program. In the following example, the host program is Switch
8800 Family-Comware 310-R1212.app.
MAIN MENU
1. Boot with default mode
2. Boot from Flash
3. Boot from CF card
4. Enter serial submenu
5. Enter ethernet submenu
6. Modify Flash description area
7. Modify bootrom password
Upgrading the Software93
0. Reboot
Enter your choice(0-7):
Enter your choice(0-7): 6
Please input ’0’ or ’1’ (’0’:Boot from Flash, ’1’:Boot from CF card)
BootDev = 0
FlashFileName = Switch 8800 Family-Comware 310-R1212.app
Upgrading the Software
Using the CLI
If your terminal is connected to the switch over a network, you can load the Boot
ROM and host programs remotely through the CLI using FTP. or TFTP
Using FTP
1 Run the FTP server on a local PC, provided you have configured username and
password and have set the correct file directory. Specify the PC’s IP address (for
example, 10.10.110.1 in the example below).
2 Log on to the switch using Telnet or through the Console port to send host
program to the switch using FTP.
3 Using the Get command, download the main boot file (SWITCH002.app in the
example below), the active host program (SWITCH001.app in the example below),
and the Boot ROM program (SWITCHbtm.btm in the example below.
<3Com> 10.19.110.1
Trying ...
Press CTRL+K to abort
Connected.
220 WFTPD 2.0 service (by Texas Imperial Software) ready for new user
User(none):8500
331 Give me your password, please
Password:
230 Logged in successfully
[ftp] get SWITCH002.app SWITCH002.app
[ftp] get Switchbtm.btm Switchbtm.btm
[ftp] bye
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files to the standby Fabric.
4 Specify the next boot program. If the switch has two fabrics, specify the load
programs respectively for the active and standby fabrics (the current standby fabric
is in slot 7 in the example below).
a Load Boot ROM program
If the switch has two fabrics, you also can copy the host and Boot ROM program
The URL form of the files in the standby fabric file system must start with
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“slot[No.]#flash:/”, where [No.] is the standby fabric number.
<3Com> display boot-loader
The app to boot of board 6 at the next time is: flash:/SWITCH002.app
The app to boot of board 6 at this time is: flash:/SWITCH002.app
The app to boot of board 7 at the next time is: flash:/SWITCH002.app
The app to boot of board 7 at this time is: flash:/SWITCH002.app
<3Com> reboot
94CHAPTER 6: SWITCH MONITORINGAND MAINTENANCE
c
Upgrading the
Application Module
Program
CAUTION:
■ You must reboot the switch using the reboot command to validate the host
program. If Flash memory space is not enough, you can delete some of the
program files in Flash after completing the Boot ROM loading. (3Com
recommends that you delete the host program that is no longer in use.) Then
upload the host program to the switch using FTP.
■ Make sure that you have saved other the configuration before rebooting.
■ Do not power the switch off during the loading process.
The Boot ROM and host program loading process is now complete.
Using TFTP
Using the CLI to upgrade using TFTP is similar to using FTP. The only difference is
that you use the tftp get command to download software to the switch. In this
case, the switch can only be used as a TFTP client to download the software to its
Flash memory from the TFTP server. Once the download is complete all remaining
steps are the same.
If you have the 360G Fabric (3C17508), download the application software image
files to the compact flash (CF) and then boot from the CF.
If you have the 720G Fabric (3C17539), download the application software image
files directly to the Fabric’s onboard flash.
Troubleshooting the
Software Upgrade
This section describes the problems may occur during the software upgrade.
No response from the fabric serial interface
Make sure the serial interface cable is in good condition and that its attributes are
set correctly.
Uploading the configuration file or host program using FTP fails
Check that the:
■ Configuration is correct and that the FTP server is started.
■ Flash has enough space for the target files.
■ TFTP flag is selected (TFTP is not supported).
The configuration did not save during the I/O module reboot
Before saving the configuration, you must check the operating status of the I/O
module. Do not save the configuration during the I/O module reboot. Otherwise,
the configuration you want to save may be lost.
I/O module program loading fails or you cannot register for a long period
■ Check that the I/O module type is supported on the current host program.
■ Check that the I/O module Boot ROM program matches the host program.
■ Check that the I/O modules are well seated.
■ Insert an I/O module to other slots to make sure it is not defective.
Password Loss95
■ Check that the host program exists and that the current host program is
running.
Insufficient Flash memory
■ Empty the recycle bin when the I/O module starts.
■ Delete the unused files in the Flash.
Password LossIf the switch’s Super password or Boot ROM password, contact your local support
representative.
96CHAPTER 6: SWITCH MONITORINGAND MAINTENANCE
LIGHTNING PROTECTIONOFTHE
A
Installing a Lightning
Arrester for the AC
Power
c
SWITCH
This appendix describes how to install the lightning arrester for the AC power (a
socket strip with lightning protection)
CAUTION: A lightning arrester is not shipped with the switch. You must purchase
it separately, if needed.
Make sure, when connecting an outdoor AC power cord directly to the switch,
that you connect a lightning arrester to the AC power (a socket strip with
lightning protection) before you plug the AC power cord into the switch. This
helps to prevent damage in the event of a lightning strike. Install your lightening
arrester according to its manufacturer’s instructions.
Figure 64 A Lightning Arrester
Grounding and polarity indicator (red) :
On means that the lines are incorrectly connected
( either the ground wire is not well connected, or the live and zero lines are incorrectly connected).
Check the power supply circuit.
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Power switch
Normal operation indicator (green):
On means that the arrester is working. Otherwise, it
means that the protection circuit has been damaged.
Power socket (compliant with the IEC standard),
connected to the equipment room’s power supply
through power cord
Mainboard
Multipurpose power socket connected to the device
CAUTION:
■ Make sure that the arrester is well grounded before using the lightning arrester
for power.
■ After inserting the switch’s AC power cord plug into the lightening arrester’s
socket, if the green LED is on and the red LED does not alarm, it means that the
lightning arrester’s power is running and the lightning protection function is
active.
protected by the arrester
Overload auto protector,
which can be manually reset.
■ Make sure that the red LED is on. If there is a problem, determine if the
arrester’s ground wire is well grounded and the live and zero wires are
98CHAPTER A: LIGHTNING PROTECTIONOFTHE SWITCH
connected in right direction. When the red LED is on, use a multimeter to
examine the polarity at the arrester’s power socket. If it is same as that of the
power socket in the equipment room, it means that the arrester is not well
grounded. If it is adverse to that of the power socket in the equipment room, it
means that the arrester’s power socket is set to the reverse polarity. In this case,
you should open the arrester’s power socket and correct the polarity. After
that, if the red LED still alarms, it means that the arrester is still not well
grounded.
Installing a Lightning
Arrester for the
Network Port
n
A network port lightning arrester is specifically designed for an 10/100M electrical
interface (an RJ-45 connector in this case) Ethernet port.
Make sure, when connecting an outdoor AC power cord directly to the switch,
that you connect a lightning arrester to the AC power (a socket strip with
lightning protection) before you plug the AC power cord into the switch. This
helps to prevent damage in the event of a lightning strike. Install your lightening
arrester according to its manufacturer’s instructions.
Required tools
■ Phillips screwdriver or flat-module screwdriver
■ Multimeter
■ Tilted wire cutter
Installation procedure
1 Remove the protection paper from one side of the double-faced adhesive tape,
and stick the tape to the surface of the arrester. Remove the protection paper from
the other side, and stick the arrester onto the switch’s chassis as close to the
grounding screw as possible.
2 Cut the arrester’s ground wire to the length of the distance between the arrester
and the switch’s grounding screw so that you can securely tighten the ground wire
to the switch’s grounding screw.
3 Use the multimeter determine if the arrester’s ground wire connects properly
chassis’s grounding screw.
4 According to the instructions provided with your network port arrester, connect
the arrester to switch using the cables (Make sure to insert the outdoor network
cable into the arrester‘s IN end, and the cable that is connected to the switch into
the arrester’s OUT end). Check that the arrester’s indicators display correctly.
5 Use the nylon ties to bundle the cables neatly.
Installing a Lightning Arrester for the Network Port99
Switch
Network cable indoors
Power input
Network cable from outdoors
Lightning arrester for the network port
(attached onto the chassis)
Lightning arrester ground wire
Switch grounding screw
Metal cabinet that contains the switch
Figure 65 Installation diagram of a network port’s lightning arrester
Installation precautions
To ensure that the network port’s lightning arrester does not affect performance,
make sure that the lightning arrester for network port is:
■ Connected properly (see Step 4 in the previous section).
■ Well grounded. The ground wire for the arrester should be as short as possible.
Ensure that it is has proper contact with the switch’s grounding screw using the
multimeter.
■ Installed completely. If the switch has more than one network ports to
interconnect with other devices using outdoor cables, you should install
lightning arresters for all network ports for protection.
100CHAPTER A: LIGHTNING PROTECTIONOFTHE SWITCH
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