Hardware Maintenance

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Table 75 Description of I/O module LEDs

Indicator

State description

RUN

ALM

2~6 (Switch 8807) 0~3, 6~9 (Switch 8810) 0~5, 8~13 (Switch 8814)

ON indicates 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.

OFF indicates that there is no I/O module alarm or the I/O module is not in position at all.

ON indicates that there is I/O module alarm.

On 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.

Hardware

Maintenance

Replacing AC PSU

c

CAUTION: The PSU of the Switch 8800 Family is hot-swappable.

When installing or replacing a PSU while power is being supplied, you must take care in the operation procedures and safety with electricity. Do not touch any naked wires, terminals or any parts of the product marked with a dangerous voltage label to avoid bodily injury.

Removing AC PSU (Switch 8807 as example)

Step 1: Put the power switch on the PSU from the ON position into the OFF position.

Step 2: Pull right the clamp holding the power cord connector and unplug the power cord.

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

Step 4: Hold the handle of the PSU and pull the PSU gently out of the chassis along the guides.

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3Com 8814 Hardware Maintenance, Replacing AC PSU, Removing AC PSU Switch 8807 as example, Description of I/O module LEDs

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.