Managing the Hub

Using the SEHI100TX Hub View

Knowing the priority scheme employed by the SEHI100TX can tell you a lot about the error counts you are seeing. For example, you know that the number of packets counted as CRC errors had only CRC errors Ñ they were of legal size (not runts or giants) and had no truncated bytes. You also know that any packet less than 64 bytes long has been counted as a runt, even if it also had alignment and/or CRC problems (which is likely if the runt is the result of a collision or other transmission problem).

Frames Statistics

The Frames statistics windows display the following Þelds:

Frame Sizes

¥Runt Frames (packets smaller than 64 bytes)

¥64-127 (byte) Frames

¥128-255 Frames

¥256-511 Frames

¥512-1023 Frames

¥1024-1518 Frames

¥Giant Frames (packets larger than 1518 bytes)

NOTE

Because the SEHI100TX does not currently support Protocol counts, the Protocol Þelds in the Frames window will be grayed-out.

In addition to the performance information described in the preceding sections, the Hub View also provides you with the tools you need to conÞgure your HUBStack and keep it operating properly. Hub management functions include setting polling intervals, enabling ports at the module and port level, and disabling ports at the port level.

Setting the Polling Intervals

To set the polling intervals used by SPMA and the SEHI100TX:

1.Click on the Device button to display the Device menu.

2.Drag down to Polling Intervals, and release. The SEHI100TX Polling Intervals window, Figure 2-11, will appear.

2-20	Managing the Hub

SEHI100TX-22 specifications

Cabletron Systems SEHI100TX-22 is a high-performance network interface card that has been designed for reliable data transfer in various networking environments. Ideal for both enterprise and small business applications, the SEHI100TX-22 delivers exceptional performance at a competitive price point.

One of the standout features of the SEHI100TX-22 is its support for 100Base-TX Ethernet standards, which enables high-speed data transmission at rates of up to 100 Mbps. This high throughput capacity makes it an excellent choice for organizations that require swift and efficient data handling, particularly in environments with heavy network traffic.

The card is equipped with two RJ-45 connectors, allowing it to support dual-port configurations. This dual-port setup enhances networking capabilities by enabling fault tolerance and load balancing, ensuring that the network remains operational even in the event of a failure. Moreover, it supports full-duplex operation, allowing for simultaneous bi-directional data transmission, further improving overall network efficiency and performance.

Another significant advantage of the SEHI100TX-22 is its compatibility with a wide range of operating systems and platforms, including Windows, Linux, and various UNIX variants. This versatility ensures that it can be seamlessly integrated into existing network infrastructures without the need for extensive configuration or modification.

In terms of installation and maintenance, the SEHI100TX-22 is user-friendly, thanks to its Plug and Play capability. This feature allows for easy installation; users can simply insert the card into an available PCI slot, and the operating system will automatically recognize and configure the device, minimizing downtime and simplifying the setup process.

Additionally, the SEHI100TX-22 incorporates advanced technologies like Auto-Negotiation, which automatically detects the speed and duplex capabilities of the connected device, thus optimizing the network performance. The card also features various onboard diagnostic LEDs, providing real-time feedback on connection status and data activity, which aids in troubleshooting and performance monitoring.

In summary, the Cabletron Systems SEHI100TX-22 offers a robust set of features that cater to the demands of modern network environments. With its high-speed capabilities, dual-port support, compatibility across multiple operating systems, and user-friendly installation process, it remains a solid choice for organizations looking to enhance their networking performance and reliability.