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If you are a United States government agency, then this documentation and the software described herein
are provided to you subject to the following:
All technical data and computer software are commercial in nature and developed solely at private expense.
Software is delivered as “Commercial Computer Software” as defined in DFARS 252.227-7014 (June 1995)
or
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1995) or FAR 52.227-14 (June 1987), whichever is
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3Com and the 3Com logo are registered trademarks of 3Com Corporation.
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IEEE and 802 are registered trademarks of the Institute of Electrical and Electronics Engineers, Inc.
All other company and product names may be trademarks of the respective companies with which they are
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It is the policy of 3Com Corporation to be environmentally-friendly in all operations. To uphold our policy,
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Establishing environmental performance standards that comply with national legislation and regulations.
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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.
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
ConventionsTa bl e 1 lists icon conventions that are used throughout this guide.
Ta bl e 1 Notice Icons
IconNotice TypeDescription
Information noteInformation that describes important features or
CautionInformation that alerts you to potential loss of data
WarningInformation that alerts you to potential personal
Ta bl e 2 lists text conventions that are used throughout this guide.
Ta bl e 2 Text Conventions
ConventionDescription
Screen displaysThis typeface represents information as it appears on the
Keyboard key namesIf you must press two or more keys simultaneously, the key
The words “enter” and “type” When you see the word “enter” in this guide, you must type
instructions.
or potential damage to an application, system, or
device.
injury.
screen.
names are linked with a plus sign (+), for example:
Press Ctrl+Alt+Del
something, and then press Return or Enter. Do not press
Return or Enter when an instruction simply says “type.”
4ABOUT 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
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 CD-ROM that accompanies your router or on the 3Com
World Wide Web site:
http://www.3com.com/
SWITCH 8800 COMPONENTS
1
The chapter describes the following Switch 8800 components:
■ Switch Chassis
■ Switch Backplane
■ Fabric Module
■ I/O Modules
■ Power Supply
■ Fan Assembly
■ Switch 8800 Specifications
■ Switch 8800 Software Features
Switch ChassisThere are three Switch 8800 Models, the 7-Slot, 10-Slot, and the 14-Slot. Ta bl e 3
lists the hardware features of each model.
Ta bl e 3 Hardware Features of the Switch 8800 Models
7-Slot Chassis10-Slot Chassis14-Slot Chassis
Fabric slots222
I/O module slots5812
Fan slot112
AC power supply slots 222
In each starter kit, one Fabric module is installed in the upper Fabric slot and one
AC power supply is installed in the left power slot.
Switch BackplaneThe Switch 8800 backplane is part of the integrated chassis and delivers
high-speed data transfer between the Fabric and I/O modules. The backplane
bandwidth capacity is 1,440 Tbps.
The backplane supports the following functions:
■ Interconnection of signals between modules
■ Communication channels
■ Hot swapping for modules
■ Auto-recognition of slots
■ Distribution of power and management of the power supply for the system
6CHAPTER 1: SWITCH 8800 COMPONENTS
Fabric ModuleThe Fabric module (3C17508) is the core of Switch 8800 system. It has the
following functions:
■ Connects the I/O modules through a crossbar
■ Manages and calculates routing table updates
■ Performs software upgrade and system reset functions
■ Monitors system power and the fan assembly
■ Provides timing
Figure 1 illustrates the front panel of the Fabric.
Figure 1 Switch 8800 Fabric
1
23456
7
1 Compact Flash port7 I/O module LEDs
2 Management 10BASE-T/100BASE-TX port8 SFS LED
3 RS232/485 port9 RUN LED
4 Console port10 ALM LED
5 AUX (modem) port11 ACT LED
6 Reset button
Ta bl e 4 lists Fabric specifications.
Ta bl e 4 Fabric Specifications
ItemSpecification
Bandwidth360 Gbps
CPUMPC755 133 Mhz
BootROM512 KB
SDRAM512 KB
Flash16 MB
Dimensions (L x W) 366.7 mm x 340 mm (14.5 x 13.5 in)
External portsOne console port for local configuration management
One AUX port for remote dial-up configuration management
One 10BASE-T/100BASE-TX port for upgrade and network management
One RS232/485 port for connecting an external PoE power rack
One hot-swap Compact Flash port
Maximum power
consumption
70 W
8
91011
Reset ButtonThe reset button resets the entire system.
Fixed PortsThe Switch 8800 Fabric module provides the following fixed ports:
■ Compact Flash (CF) Port
■ Management 10Base-T/100Base-TX port
Fabric Module7
■ RS232/RS485 port
■ Console Port
■ AUX (Modem) Port
Compact Flash (CF) Port
The 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. You can also use the CF port to upgrade software online.
Management 10Base-T/100Base-TX port
The management 10Base-T/100Base-TX port is connected to a computer using an
RJ-45 connector. You can use this port for system application downloading and
debugging. The management 10Base-T/100Base-TX port can also be connected to
devices such as a network management workstation to manage the system
remotely.
Ta bl e 5 lists specifications for the management 10Base-T/100Base-TX
port.
Ta bl e 5 Management 10Base-T/100Base-TX Port Specifications
SpecificationDescription
Port connectorRJ-45
Number of ports1
Port speed10 Mbps, half duple/full duplex
100 Mbps, half duplex/full duplex
Maximum transmission
segment over the selected
medium
Services System software upgrade and network management
100 m (328 ft) over the category-5 twisted pair cable
(crossover cable is required.)
See “RJ-45 Connector” on page 56 for an illustration of the RJ-45 connector.
Ta bl e 6 describes the LEDs of the management 10Base-T/100Base-TX port.
Ta bl e 6 Management 10Base-T/100Base-TX Port LEDs
LEDDescription
LINKOff — The line is not connected.
ACTIVEGreen — No data is being transmitted.
Green — The line is connected.
Green flashing — Data is being transmitted.
RS232/RS485 port
The RS232/RS485 port uses an RJ-45 connector to connect to an external power
rack and monitor its status.
Ta bl e 7 RS232/RS485 Port Specifications
SpecificationDescription
ConnectorRJ-45
Number of ports1 RS 232 or RS485 port depending on the type of cable.
FunctionalityReserved for monitoring and communication with an
Ta bl e 7 lists specifications for the RS232/485 port.
external subsystem
8CHAPTER 1: SWITCH 8800 COMPONENTS
Console Port
The console port is connected to the configuration terminal using an RJ-45
connector. You can use the console port for system debugging, configuration,
maintenance, management, and loading application files.
The console port can also be connected to a modem for functions such as remote
system debugging, configuration, maintenance, and management. You can
configure the baud rate on the console port.
Ta bl e 8 lists console port specifications.
Ta bl e 8 Console Port Specifications
SpecificationDescription
Port connectorRJ-45
Port standardAsynchronous EIA/TIA-232
Baud rate9600 bps (by default)
Transmission distance15 m (45 ft)
ServicesConnects with character terminal
Connects with local or remote PC serial port and runs terminal
emulation on a PC (a pair of modems are required for a
remote connection)
AUX (Modem) Port
The AUX port uses an RJ-45 connector and serves as a backup port for the console
port to connect a background terminal or a modem for remote system debugging,
configuration, maintenance, and management.
Ta bl e 9 lists AUX port
specifications.
Ta bl e 9 AUX Port Specifications
SpecificationDescription
ConnectorRJ-45
StandardAsynchronous EIA/TIA-232
FunctionalityConnects a serial port of a PC (through a Modem pair for a
remote PC) and runs terminal emulation on the PC.
Module LEDs The module LEDs show the status of the I/O modules, as described in Ta bl e 10.
Ta bl e 10 I/O Module LEDs
LEDStatus description
RUNGreen or off — The module failed or has not been inserted.
Green flashing, slow — The module is working normally.
Green flashing, fast — The module is booting or is not
registered successfully.
ALMOff — The module is working normally or has not been
inserted.
Red or red flashing — The module failed or is not working
normally.
I/O Modules9
Fabric Status LEDsThe Fabric status LEDs show the status of the Fabric module, as described in
Ta bl e 11.
Ta bl e 11 Fabric Status LEDs
LEDStatus description
SFS ( not available)ON — The switching Fabric unit is active.
OFF— The switching Fabric unit is standby.
RUNGreen or off — The Fabric failed or has not been inserted.
Green blinking — The Fabric is working normally.
ALMRed — The Fabric has alarms.
OFF — The Fabric has no alarms.
ACTGreen — The Fabric is in active mode.
OFF — The Fabric is in standby mode.
I/O Modules The Switch 8800 provides slots for five to twelve I/O modules, in addition to the
Fabric slots. The following I/O modules are supported:
■ 1-Port 10GBASE-X (XENPAK) Module
■ 2-Port 10GBASE-X (XFP) Module
1-Port 10GBASE-X
(XENPAK) Module
■ 12-Port 1000BASE-X (SFP) Module
■ 24-Port 1000BASE-X (SFP) Module
■ 24-Port 10/100/1000BASE-T (RJ45) Module
Consider the following when selecting I/O modules:
■ You can configure several I/O modules of the same type
■ All I/O module slots are the same and any combination of I/O modules can be
inserted
■ You must select I/O module port cables that are compatible with each installed
I/O module
The 1-port 10GBASE-X (XENPAK) module provides a single 10 Gbps XENPAK port.
Figure 2 illustrates the front panel of the 1-port 10GBASE-X (XENPAK) module.
Figure 2 Front Panel of the 1-Port 10GBASE-X (XENPAK) Module
12
1 XENPAK port
2 XENPAK port LEDs
Ta bl e 12 describes the 1-port 10GBASE-X (XENPAK) module LEDs.
Figure 6 illustrates the front panel of the 24-port 10/100/1000BASE-T (RJ45)
module.
Figure 6 Front Panel of the 24-Port 10/100/1000BASE-T (RJ45) Module
12
1 Ethernet ports
2 Ethernet port LEDs
Ta bl e 20 describes the 24-port 10/100/1000BASE-T (RJ45) module LEDs.
Ta bl e 20 24-Port 10/100/1000BASE-T (RJ45) Module LEDs
LEDDescription
LINKOff — The port is not operating
On — The port is operating
ACTOff — No data is being transmitted
Orange flashing — Data is being transmitted
Ta bl e 21 lists specifications of the 24-port 10/100/1000BASE-T (RJ45) module.
Ta bl e 21 Specifications for the 24-Port 10/100/1000BASE-T (RJ45) Module
SpecificationDescription
CPUMPC8245
BootROM512 KB
SDRAM128 MB
Dimensions (L x W)366.7 x 340 mm (14.5 x 13.4 in)
Power consumption85 W
Connector RJ-45
Number of ports24
Transmission rate10 Mbps half/full duplex
100 Mbps half/full duplex
1000 Mbps full duplex
Cable and maximum
transmission distance
Category-5 twisted pair
100 m (328 ft)
14CHAPTER 1: SWITCH 8800 COMPONENTS
Power SupplyThe Switch 8800 power supplies are installed at the bottom of the chassis, in the
front. Only one AC power supply is required for each Switch 8800 chassis,
although 2 power supply slots are provided to implement 1+1 redundancy.
The 7-slot chassis uses a 1200 W auto-ranging power supply (3C17506).
The 10- and 14-slot chassis use a 2000 W auto-ranging power supply (3C17507).
When this power supply is used at 110 V, it delivers 1200 W of power, when used
at 220 V, it delivers 2000 W of power.
Do not combine 1200 W and 2000 W power supplies in the same chassis. If you
have two power supplies in your Switch 8800 chassis, they must be of the same
type.
Figure 7 illustrates the 1200 W power supply for the Switch 8800.
Figure 7 Switch 8800 Power Supply
Ta bl e 22 describes the power supply LEDs.
Ta bl e 22 Power Supply LED Status
LEDDescription
INPUTON — The power switch in the ON position and power input is normal.
OFF — No power is being supplied.
OUTPUTON — Power output is normal.
OFF — Power output is not normal.
FAILON — The power supply is not operating normally.
OFF — The power supply is operating normally.
Ta bl e 23 describes the specifications of the power supply for the Switch 8800
chassis.
Ta bl e 23 Specifications for the Switch 8800 Power Supply
Specification
Description
Input100 to 240 V, 50 to 60 Hz
Maximum tolerance90 to 264 VAC, 47 to 63 Hz
Maximum input
current
Maximum output1200 W1200 W (90 to 160 V)
Lightning protectionLightning protection must be provided for all chassis.
7-slot Chassis10-slot Chassis14-slot Chassis
14 A
2000 W (160 to 264 V)
Fan Assembly15
Power CordsIn North America, power cords for both 110 V and 220 V power input are shipped
with the Switch 8800 chassis. The power cord required depends on the power
output demands of the system.
Ta bl e 24 lists the power cord type that is required for each power supply.
Ta bl e 24 Switch 8800 Power Cords
Power Cord
7-slot chassis10-slot chassis14-slot chassis
110 V1200 W1200 W1200 W
220 V2000 W2000 W
Power Supply
The North American 220 V power cord that is provided has a NEMA 6-20P
20A/250VAC style plug. The 220 VAC wall outlet needed for this plug is a NEMA
6-20R 20A/250V style outlet.
Fan Assembly The fan assembly consists of four to six individual fans and is located on the right
side of the chassis. They operate on -48 V DC current. Each starter kit includes the
appropriate fan assembly.
the 7-slot chassis.
Figure 8 Fan Assembly for the 7-Slot Chassis
Figure 8 illustrates the faceplate of the fan assembly for
Ta bl e 25 describes the Status LEDs on the faceplate of the fan assembly.
Ta bl e 25 Fan Assembly Status LEDs
LEDDescription
RUNOFF— The fan assembly is not operating normally
Fan assembly needed 1 (3C17503)1 (3C17504)2 (3C17503)
Number of fans468
Power input25 W35 W50 W
The fans are directly connected to the backplane through connectors. Fan
operation fault signals are collected and transmitted to the system alarm board
through the backplane.
Switch 8800 Specifications17
Switch 8800
Specifications
Ta bl e 27 provides detailed information about features of the Switch 8800.
Ta bl e 27 Specifications for the Switch 8800 System
Ta bl e 28 describes the software features of the Switch 8800.
Ta bl e 28 Switch 8800 Software Features
ServiceSupport
Wire speed Layer 2
switching
Port auto-negotiationSpeed and duplex operation modes.
Switching modeStore and Forward mode
MAC address tableAddress self-learning
STP/RSTPImplements IEEE 802.1D/802.1w Standard
Traffic controlIEEE 802.3x traffic control (full duplex)
Link aggregation31 groups of 8 ports
VLAN4K VLANs, implements IEEE 802.1Q standard
Broadcast storm
suppression
Network protocolTCP/IP stack
Switching capacity of 720 Gbps
Packet forwarding rate at 428 Mpps
Wire speed forwarding (with forwarding delay less than 10µs) for
I/O module ports
Implements IEEE 802.1D standard and supporting port lock.
Address table: up to 64 K MAC addresses on each system, 12 K
MAC addresses on each module.
Back-pressure Based Flow Control (half-duplex)
Port-based VLAN
GARP and GVRP
Routing between VLANs
Supported
ARP
DHCP Relay
18CHAPTER 1: SWITCH 8800 COMPONENTS
Table 28 Switch 8800 Software Features (continued)
ServiceSupport
IP address tableUp to 128 K IP address forwarding entries
IP routingStatic routing
MulticastGMRP
AAA and SecurityAccess user authentication implements IEEE 802.1x
ReliabilityVRRP
QoSTraffic classification
Load and upgrade system
software
* In the advanced version of the software.
RIP Version 1 and 2
OSPF Version 2
BGP-4*
*
IS-IS
IGMP
PIM-DM
PIM-SM
Local authentication and RADIUS authentication
User hierarchical management and password protection
ACL, L2/L3/L4 information filtration (including frame filtration
based on port and source/destination MAC address, packet
filtration based on source/destination IP address and type of the
upper layer protocol)
Plain text and MD5 text authentication for OSPF and RIP Version 2.
DES56 Encryption for SNMP v3
*
Bandwidth management based on port, MAC address, IP address,
TCP/UDP port number, ToS/Diffserv value and CAR. The granularity
of bandwidth management is 64 Kbps.
Priority-based on VLAN port, IEEE 801.1P and ToS/Diffserv.
Support traffic classification to set CoS
8 egress queues for each port
Queue dispatching algorithm FIFO and PQ.
Xmodem protocol
Telnet
FTP and TFTP
2
INSTALLING THE SWITCH 8800
The following sections describe how to prepare and install the components of the
Switch 8800:
■ Preparing to Install
■ General Site Requirements
■ Installation Checklist
■ Installing the Chassis
■ Installing the Cabling Rack
■ Installing a Module
■ Connecting the Ground Wire
■ Connecting and Configuring Power
■ Installing the Fan Assembly
■ Installing Cables
■ Connecting Module Cables
■ Post-installation Checklist
WARNING: Only trained and qualified personnel should install and maintain
3Com products.
Preparing to InstallThis section provides guidelines for preparing your site and switch for installation.
General Safety
Recommendations
Before installing your switch, note the following safety recommendations:
■ Switch off the power supply before connecting the cables.
■ Keep the switch away from heat sources.
■ Do not keep the switch in a damp place, and prevent liquid from getting into
the switch.
■ Ensure that the neutral point of the power is grounded properly, to avoid
personal injury.
■ Ensure that the power is off before plugging or unplugging the modules and
cables of the switch.
■ Before moving the chassis, disconnect all the power cords and external cables.
■ To avoid damage to the switch, connect all the cables correctly. Never connect
telephone cables (including the ISDN lines) to the console or AUX port.
■ During the installation, wear an antistatic wrist strap and antistatic gloves. See
“Static Electricity” on page 21 for additional information on preventing static.
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