Port Type

Using the SEHI100TX Hub View

Provides the following administrative information about the port:

¥Admin/Link Status indicates the connection status of the port:

-ON indicates that the port has a valid link signal or does not support a link signal.

-OFF indicates that the port has been turned off through management action.

-NLK (No Link) indicates that the port does not have a link to a device at the other end of the cable, or that there is no cable attached.

-SEG (Segmented) indicates that the port has been segmented by the repeater due to an excessive collision level.

NOTE

Because BNC thin coax, AUI, and transceiver ports do not support the link feature, the displayed Admin/Link status for those ports may be misleading: for example, a BNC port will display as segmented when, in fact, there is no cable or terminator attached or the cable has been disconnected; an AUI or transceiver port will display as on (with a valid link signal) even when no cable is attached. Be sure to keep these anomalies in mind when troubleshooting a device so equipped.

¥Admin Status displays either ON or OFF, an indication of whether management has the port enabled or disabled. A port can be ON but not operational; for example, under the Admin display, ports that are segmented or not linked are shown as ON.

¥Active Ports displays either YES or NO for any active (green) port, indicating whether or not that port has seen any trafÞc at all since the device was last initialized or the counters were last reset; this port display form can tell you whether any port whose statistics are not currently incrementing has seen some activity in the past. Non-green (presumably inactive) ports will display three dashes (---), regardless of their past statistical activity.

Checking Device Status and Updating Front Panel Info

The Device Status window (Figure 2-6) is where you change the information displayed on the Hub View Front Panel and where you can see summary information about the current state of the device.

To open the Device Status window:

1.Click on to display the Device menu.

2.Drag down to Status and release.

2-10	Monitoring Hub Performance

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.