3Com 8807 Limitation on dust content in equipment room, Harmful gas limits in an equipment room

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Examining Installation Site

51

Cleanness Requirements Dust 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.

Table 68 Limitation on dust content in equipment room

Mechanical active material

Unit

Content

 

 

 

Dust particle

particles/m3

‚≤3 x 104

(No visible dust on desk in three days)

Note: Dust particle diameter ‚≥ 5µm

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 SO2, H2S, NO2, NH3, and Cl2, should be prevented. The specific limitation values of these harmful gases are given in the following table.

Table 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

 

 

 

Anti-StaticAny possible interference sources, no matter outside or inside the system, affect Requirements 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.

■Adopt electromagnetic shielding if necessary.

Grounding A good grounding system is not only the basis essential to the stable and reliable Requirements 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.

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Contents 3Com Switch 8800 Family United States Government Legend 3Com Corporation Campus Drive Marlborough, MA USAContents Examining Installation Site Installation Tools Switch InstallationLists text conventions that are used throughout this guide ConventionsProtocols that are used to interconnect LANs Lists icon conventions that are used throughout this guideAbout this Document SwitchRelated Documentation8800s Preface3Com Switch 8810 10-Slot Chassis 3Com Switch 8814 14-Slot Chassis Switch 8807 slots Chassis and Slots SwitchSwitch 8810 slots Switch FunctionsStructure AC Power System Specifications SwitchEach Ethernet port can deliver up to 15.4 W to its PD PoE entry area External PoE Power Rack 3C17509Mbus Introduction Normal AbnormalLabel Color State Abnormal reason Role and function Fan tray panel of the Switch 8800 FamilyGbps Switch Fabric Fabric ModulesPanel Status LEDs for the management 10Base-T/100Base-TX port RS232/485 port specificationsCompact Flash CF slot Management PortsStatus LEDs Reset buttonConsole port specifications AUX port specificationsStatus LEDs for I/O module Status LEDs for the 360 Gbps Switch Fabric moduleGbps Switch Fabric LED Status CF status LED720 Gbps Switch Fabric specifications Gbps Switch Fabric Technical specificationsAUX port Status LEDs for the 720 Gbps Switch Fabric module Technical specifications of the Switch 8800 Family Status LEDs for the 720 Gbps Switch Fabric moduleSoftware Features Supported software featuresSoftware features of the Switch 8800 Family Lacp Software features of the Switch 8800 Family Product Overview 3C17511 1-port 10GBASE-X Xenpak O modules available to the Switch 8800 Family3C17511 module specifications OverviewPort LEDs on the 3C17511 module 3C17512 module specifications3C17512 2-port 10GBASE-X XFP Module Panel and LEDs 3C17511 module panelSpecifications 3C17513 12-port 1000BASE-X SFP ModulePanel and LEDs Figure 3C17513 module has two LEDs for each port on its panel 3C17514 24-port 1000BASE-X SFP Module3C17525 1-port 10GBASE-X Advanced Xenpak Module 3C17516 24-port10/100/1000BASE-T ModulePort LEDs on the 3C17525 module 3C17526 module specifications3C17526 4-port 10GBASE-X XFP Module Panel and LEDs 3C17525 module panel1000 Mbps optical port LEDs on the 3C17526 module 3C17527 module specifications3C17527 2-port 10GBASE-X XFP Advanced Module 3C17526 module panel3C17528 module has one LED for each port on its panel 3C17528 48port 10/100/1000 BASE-T RJ-45 Module3C17530 24-port 1000BASE-X SFP Advanced Module 3C17531 24-port 10/100/1000BASE-T Advanced ModulePanel and LEDs 3C17530 module panel Port LEDs on the 3C17531 module 3C17532 module specifications3C17531 module has one LED for each port on its panel Panel and LEDs 3C17531 module panel3C17533 24-port 1000BASE-X SFP IPv6 Module 3C17532 module has one LED for each port on their panelPanel and LEDs 3C17533 module panel 3C17536 4-port 10GBASE-X XFP Quad IPv6 Module 3C17534 module specifications3C17536 module specifications 3C17534 24-port 10/100/1000BASE-T IPv6 Module1000 Mbps optical port LEDs on the 3C17536 module 3C17537 module specifications3C17537 2-port 10GBASE-X XFP IPv6 Module Panel and LEDs 3C17536 module panel1000 Mbps optical port LEDs on the 3C17537 module 3C17538 module specifications3C17538 48-port 1000BASE-X SFP IPv6 Module Panel and LEDs 3C17537 module panelFront panel Technical specifications for the 3C17542Status LEDs on the 3C17546 Technical specifications for the 3C17546Technical specifications for the 3CR1754766 Available cablesStatus LEDs on the 3CR1754766 Technical specifications for the 3C17548Documents the 3Com Switch 8800 Family transceivers Transceiver SpecificationsTransceivers Switch 8800 Port Switch 8800 Available ModulesDensities O and Application Modules Recommendations SafetyGeneral Safety RecommendationsInstallation Preparation Gas Average mg/m3 Max. mg/m3 Limitation on dust content in equipment roomMechanical active material Unit Content Harmful gas limits in an equipment roomMeasure Installation ToolsPower Supply Requirements Space Requirements Required installation toolsInstallation Flow Confirming Installation PreparationOne Switch 8807 chassis in a cabinet Mounting the Switch User-Supplied CabinetOne Switch 8807 chassis in a cabinet Switch 8807 11U Two Switch 8807 chassis in a cabinetTwo Switch 8807 chassis in a cabinet Switch 8807 11U One Switch 8810 chassis in a cabinetOne Switch 8810 chassis in a cabinet Switch 8810 14U One Switch 8814 chassis in a cabinetCabinet One Switch 8814 chassis in a cabinet Switch 8814 17UConnecting Pgnd Wire and Power Cord Connecting Pgnd Wire Common grounding environmentOther grounding environment Ground the switch when ground bar is available Ground the switch via AC PE wire Connecting AC Power CordConnect AC power cord to the Switch Grounding PoE chassis Connecting PoE power cableInstalling Fan Tray Install mounting ears onto the both sides of the switchFan tray is hot swappable Contact take the fan tray out from the packing bag Lightning Protection BoxFasten the screw on top of the PoE lightning protection box Installing I/O modulesIntroduction Connecting Interface CablesConnecting console cable RJ-45 Signal Direction DB-25 DB-9AUX cable pinouts AUX cableConnecting Fiber Connecting AUX cableIntroduction to RJ-45 connector Connecting category-5 shielded cableCable Routing Recommendations Cable ManagementIntertwinement or bending is allowed Cable bundling example Cable fixing example Cable bundle diameter mm Space between bundles mm Verifying InstallationInstallation checking list Tie-binding parametersSwitch Installation Environment Setting upConfiguration Connecting the CablesVerifying Installation Before Powering Switch Powering and Booting the SwitchZbbtest Debugging the System LEDs on the PSU Troubleshooting the PSUFail LED red is on Check that Display Power Command Indicates the PSU is Not in PositionIndicator State description Input LED green and Output LED green are OFFRemoving an AC PSU Hardware MaintenanceIndicator Replacing AC PSURemoving and cleaning the air filter of PSU Installing an AC PSUReplacing and Cleaning Chassis’s Air Filter Installing the air filter of PSURemoving a Module Removing and Cleaning the Chassis’s Air FilterInstalling the Chassis’s Air Filter Required toolsInstalling a Module Replacing the Fan Tray Required toolsReplacing the Fan Tray Upgrading SoftwareRequired cables Main Menu Serial Submenu Please Select File Xmodem downloading ...CCC This procedure uses a Switch 8814 work as the Tftp client Tftp and to 0x0 if you are using FTP This procedure uses a Switch 8814 work as the FTP client Using FTP Port using FTPLoad host program Using FTPProgram Boot ROM and host program loading process is now completeUsing Tftp Configuration did not save during the I/O module rebootPassword Loss Insufficient Flash memoryRepresentative Switch Monitoring and Maintenance Lightning Arrester PowerInstalling a Lightning Arrester for Network Port Installation procedureUse the nylon ties to bundle the cables neatly Installation diagram of a network port’s lightning arrester Installation precautionsChapter a Lightning Protection of the Switch Supervisor 3Com NetworkDirector Access ManagerApplication such as 3Com Enterprise Management Suite EMS HP OpenViewNetwork Node ManagerAppendix B 3COM Network Management
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8810, 8814, 8807 specifications

The 3Com 8814, 8810, and 8807 are renowned products from the networking giant 3Com, which played a significant role in the evolution of networking technology in the early 1990s. These devices were instrumental during a time when organizations were transitioning from traditional communication systems to more sophisticated networking solutions.

The 3Com 8814 is a multi-port networking hub designed for small to medium-sized businesses. One of its main features includes a 10Base-T Ethernet capability, allowing for fast and reliable connectivity among various devices within a local area network (LAN). The 8814 supports up to 14 connections, providing scalability for growing businesses. The hub’s ease of use is notable; it features a plug-and-play design, which aids in quick setup without requiring extensive configuration. This plug-and-play functionality, alongside its robust physical and electrical performance, made the 8814 an appealing choice for organizations looking to enhance their networking infrastructure without significant investment.

Moving on to the 3Com 8810, this device is labeled as an intelligent network switch and ushered in advancements in network management and performance. A critical element of the 8810 is its ability to support both 10/100Base-T Ethernet connections, effectively allowing mixed-speed environments. Its built-in management features, enabled by 3Com's networking technologies, offered users the ability to monitor traffic flow, manage bandwidth allocation, and configure network settings through a user-friendly interface. This switch also incorporated advanced features like VLAN support, increasing security and segmentation within networks, which proved invaluable for sophisticated networking environments.

Lastly, the 3Com 8807 represents a more versatile and high-performance switch option suited for larger networks. This model features a stackable design that allows for a broader range of scalability and redundancy. It supports both fast Ethernet and Gigabit Ethernet, ensuring that organizations can expand their network speeds as needed. The 8807 includes features for enhanced fault tolerance and link aggregation, which bolsters reliability and performance under heavy traffic loads. Its integration with 3Com's Network Management Software provided administrators with unprecedented control over their networks, empowering them to optimize performance and troubleshoot issues effectively.

Overall, the 3Com 8814, 8810, and 8807 exemplified the company's commitment to innovation in networking technology, providing businesses with the tools necessary to develop efficient, scalable, and reliable network infrastructures. Each of these devices played a crucial role in shaping the landscape of networking, emphasizing ease of use, management capabilities, and performance.
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