3COM 8814 (01) PDF Document

The following notice icons are used in the documentation for the 3COM 8814:

The following text conventions are used for the 3COM 8814 documentation:

The AC PSU specifications for the 3COM 8814 are as follows:

The 3COM 8814 supports Power over Ethernet (PoE) with an external PoE power supply and PoE-capable modules. This feature allows the switch to deliver 48 VDC to remotely powered devices (PDs) like IP phones, WLAN APs, and network cameras through twisted-pair cables.

Key features include:

• Power can be supplied 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 a maximum distance of 100 m (328.1 feet).

• Each Ethernet port can deliver up to 15.4 W to its PD.

• The switch supports up to 4500 W (220 V) / 2250 W (110 V) of power to its PDs.

• A dedicated PoE entry area on the chassis allows for the insertion of a 3C17510 Switch 8800 PoE Entry Module, which connects to the 3C17509 External PoE Power Rack.

• The external PoE power system supports 2+1 redundancy and online-swapping of PSUs.

To implement the PoE function, a PoE-capable interface module is required, such as the 3C17528 or 3C17532, along with the 3C17529 PoE Option (PoE DIMM Module).

The 3COM 8814 supports a wide range of software features running on the 3Com Comware network operating system.

Please observe the following safety recommendations when installing your 3COM 8814.

General Safety:

• The switch uses redundant PSUs. Turn off all PSUs and remove all power cords before opening the chassis.

• Keep the chassis clean and dust-free.

• Keep the chassis and installation tools away from walk areas.

Against Electricity:

• Look for 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 if an accident occurs.

• Unplug all power cords and external cables before moving the chassis.

• Do not maintain the equipment alone when it is powered.

• Always check to ensure power has been disconnected from a circuit; never assume.

• Do not place the switch on a moist area and prevent liquid from flowing into it.

Moving the Switch:

• The 3COM 8814 is large and heavy. Remove all external cables before moving it.

• Do not move the switch alone. Work with another person.

• Move the switch slowly and stably. Avoid sudden movements or twisting your body.

• Maintain stable and consistent paces with your partner, keeping your body balanced.

• CAUTION: Only hold the handles on the sides of the chassis when moving the switch. Do not use the plastic panel, fan frame handle, PSU handles, or air vents, as they are not designed to bear the weight of the chassis.

To prevent electrostatic discharge (ESD) from damaging electronic components on your 3COM 8814, follow these steps to use an ESD-preventive wrist strap:

Step 1. Wear the wrist strap on your wrist.

Step 2. Lock the wrist strap tight around your wrist to ensure good contact with your skin.

Step 3. Insert the strap’s connector into the designated ESD hole in the chassis or attach its alligator clip to a grounding screw on the chassis.

Step 4. Make sure the ESD-preventive wrist strap is well grounded. The resistance reading should be between 1 and 10 Mohm between your body and the ground.

Always wear an ESD-preventive wrist strap when installing parts, especially circuit boards. When handling a circuit board, hold it by its edges and avoid touching components.

The 3COM 8814 must be installed indoors. The installation site should meet the following requirements:

Temperature/Humidity: Proper temperature and humidity must be maintained. High humidity can lead to poor insulation, leakage, and corrosion. Low humidity can cause static buildup. High temperatures accelerate the aging of insulating materials.

Cleanness: Dust can cause electrostatic absorption, leading to poor contact. The site should meet the following specifications:

The equipment room must also have low levels of salt, acid, and sulfide gases (SO₂, H₂S, NO₂, NH₃, Cl₂) to prevent corrosion and aging.

Anti-Static: To prevent interference, separate the switch’s working ground from power supply or lightning-protection grounding devices, keep the switch away from high-frequency devices, and use electromagnetic shielding if necessary.

Grounding: A good grounding system is essential for stable operation, lightning protection, and ESD prevention.

Power Supply: The 3COM 8814 uses redundant AC PSUs with a rated voltage of 100-240 VAC (50/60 Hz) and a maximum power output of 2000 W.

Space: Maintain at least one meter of clearance at the front and rear of the cabinet for ventilation and maintenance. The room’s clear height must be at least 3 meters.

Cabinet-Mounting: Use an open cabinet or a closed cabinet with good ventilation. Ensure the cabinet can support the weight of the switch and its accessories and that there is clearance on the sides for ventilation.

Follow these steps to install the 3COM 8814 in a 19-inch cabinet:

Step 1. Confirm that the cabinet is well-fixed and there are no obstructions inside or around it. Ensure the switch is near the cabinet and ready for installation.

Step 2. Mount a shelf inside the cabinet at the desired position for the switch.

Step 3. Install the cabling rack and attach the mounting ears (shipped with the switch) onto the switch.

Step 4. With another person, hold the switch by the handles on both sides and slowly carry it to the front of the cabinet.

Step 5. Lift the switch slightly higher than the shelf, place it on the shelf, and push it into the cabinet.

Step 6. Align the mounting ears with the square holes in the cabinet posts and fasten the screws to secure the switch in the cabinet.

Connecting the PGND Wire:

For safety, the switch must be well grounded with a resistance of less than 1 ohm between the chassis and ground.

Step 1. Remove the screw from the grounding hole in the switch chassis.

Step 2. Place the connector of the PGND wire (included with the switch) onto the grounding screw.

Step 3. Insert the grounding screw back into the grounding hole and tighten it.

Step 4. Connect the other end of the ground wire to the ground bar in the equipment room cabinet.

Connecting the AC Power Cord:

CAUTION: Ensure the power switch on the PSU is in the OFF position before connecting the power cord.

Step 1. Turn the plug-retention clamp on the PSU front panel to the right.

Step 2. Insert the plug of the AC power cord into the socket on the PSU.

Step 3. Turn the clamp back to the left until it grips the plug securely.

Step 4. Insert the other end of the power cord into an external power socket.

The I/O modules for the 3COM 8814 are hot-swappable. Follow these steps to install one:

Step 1. Wear a grounded ESD-preventive wrist strap. Take the I/O module out of its packing bag.

Step 2. Unscrew the mounting screws holding the blank filler panel in the desired slot and remove the panel.

Step 3. Hold the ejector levers on the module with both hands and pull them outward. Align the module with the guides in the chassis and slide it gently into the slot until its positioning pin touches the hole in the chassis.

Step 4. Push the ejector levers inward to lock the positioning pin into the hole.

Step 5. Secure the I/O module by fastening its mounting screws with a screwdriver.

Keep the removed blank filler panel for future use. Application Modules are installed in the same way.

To connect the console cable for terminal configuration of your 3COM 8814, follow these steps:

Step 1. Plug the DB-9 or DB-25 female connector of the console cable into the serial port of the PC or terminal you will use for configuration.

Step 2. Connect the RJ-45 connector of the console cable to the console port of the switch.

Note: The PC serial port is not hot-swappable. Always connect the DB-9/DB-25 end to the PC first, then the RJ-45 end to the switch. When disconnecting, remove the RJ-45 end first.

The pinout for the console cable is as follows:

Before powering on your 3COM 8814, verify the installation to ensure:

• The switch is stable enough.

• All boards (modules, fabrics) have been correctly installed.

• All 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 is correctly connected, the PC or terminal for configuration is in service, and all required terminal parameters have been set.

CAUTION: Before powering on the switch, locate the position of the power switch for the equipment room so you can switch off the power supply promptly if needed.

When you power on the 3COM 8814, the following information will be output to the Console terminal:

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

Please check LEDs………………….LED testing finished

The switch Mac address is 00e0.fc00.00a1

Press Ctrl+B to enter Boot Menu… 0

Auto-booting…

Booting from Flash…

Decompress Image…………………………..OK!

Starting at 0x10000…

User interface Con 0 is available

Press ENTER to get started.

After this prompt appears, press Enter to begin configuring the switch.

If the console does not display anything after power-on:

• Check that the power system is working normally.

• Check that the fabric module is working normally.

• Ensure the console cable is connected to the console port on the fabric module.

If the above items are correct, the problem is likely one of the following:

• The console cable is not connected to the correct serial port on the terminal.

• The console terminal parameters are incorrect. The settings should be: baud rate 9600, data bits 8, parity None, stop bits 1, flow control None, and terminal emulation VT100.

• The console cable is damaged.

If the terminal displays illegible characters:

This is most likely a terminal setting error. Verify that the terminal emulation parameters match the required settings listed above.

To troubleshoot the PSU on your 3COM 8814, first check the PSU LEDs:

Problem: The display power command indicates the PSU is Not in Position.

If the Input and Output LEDs are green, but the system reports the PSU is not in position, it may be badly seated. To fix this:

1. Switch off the power supply.

2. Loosen the screws on the PSU.

3. Push the PSU firmly into the chassis.

4. Tighten the screws.

5. Switch on the power supply to check if the state is normal.

Problem: The Input LED and Output LED are OFF.

Check that the power cords are connected correctly, are in good condition, and the power switch is in the ON position.

Problem: The Fail LED (red) is ON.

Check the following:

• The correct power voltage is being used (90 to 264VAC, 50-60 Hz for an AC PSU).

• The air filter protecting the fan tray is clean. Excessive dust can block ventilation and lead to power supply failure.

Removing an AC PSU:

1. Change the power switch on the PSU from the ON to the OFF position.

2. Pull the power cord retention clamp to the right and unplug the power cord.

3. Unscrew the screws on both sides of the PSU panel with a flathead screwdriver.

4. Hold the handle of the PSU and pull it gently out of the chassis along the guides. The PSU is heavy, so use both hands.

Installing an AC PSU:

1. Hold the handle of the new PSU with one hand and support the bottom with the other. Gently slide the PSU into the chassis along the guides until it is secure in the backplane.

2. Fasten the screws on both sides of the PSU panel with a flathead screwdriver.

3. Check that the power switch is in the “OFF” position and the retention clamp is pulled up.

4. Insert the AC power cord into the socket on the PSU.

5. Pull the clamp down to hold the power cord.

If you are not installing a replacement PSU, insert a blank filler panel into the slot to maintain proper airflow and prevent dust entry.

To upgrade the software on your 3COM 8814, follow these general steps:

1. Confirm that a host program is already loaded before starting.

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 your PC.

4. Load the new host and Boot ROM program files to the switch. If the switch has two fabrics, you can copy the files to the standby fabric first.

5. Upgrade the Boot ROM program on the fabric and I/O modules (if required).

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 after rebooting.

You can load the software through the command line interface (CLI) using FTP or TFTP, or locally from the Boot menu using XModem, TFTP, or FTP.

If you encounter issues during a software upgrade on your 3COM 8814, check the following:

No response from the fabric serial interface:

• Ensure the serial interface cable is in good condition and that its attributes (baud rate, etc.) are set correctly.

Uploading the configuration file or host program using FTP fails:

• Check that the IP configuration is correct and that the FTP server is started.

• Ensure the flash memory has enough space for the target files.

• Make sure the TFTP flag is not selected (as TFTP is not supported for this specific FTP action).

The configuration did not save during an I/O module reboot:

• Always check the operating status of the I/O module before saving the configuration. Do not save during an I/O module reboot, as the configuration may be lost.

I/O module program loading fails or registration takes a long time:

• Check that the I/O module type is supported by the current host program.

• Check that the I/O module’s Boot ROM program matches the host program.

• Ensure the I/O modules are well seated.

• Try inserting the I/O module into other slots to check if the module itself is defective.

• Check that the host program exists and is running.

Insufficient Flash memory:

• Empty the recycle bin when the I/O module starts.

• Delete any unused files in the Flash.

If you lose the switch’s Super password or Boot ROM password for your 3COM 8814, you should contact your local support representative for assistance.