BSC Interactive Configuration

Error Retransmit Count

This Þeld speciÞes the number of times the FRX or SmartSwitch 1800 will resend a block of data after the receiving device has detected an error in the block. The default value for this parameter is 5.

NAK Retry Count

This count speciÞes the number of times the FRX or SmartSwitch 1800 will send a frame when the receiving device is returning a NAK (negative acknowledgment).

Multidrop

If this parameter is set to Yes, the transmission will be multidrop (where there are several stations between end points); if No, the transmission will be point-to-point. The default value for this parameter is No.

Slow Poll Retry Count

This Þeld is conÞgurable only for ports conÞgured for multidrop (see Multidrop parameter above). It speciÞes how many times a control unit (CU) that is not responding will be polled before it is put on the slow poll list. CUs on the slow poll list are polled with a frequency determined by the Slow Poll Retry Frequency parameter (see below). The default value for this parameter is 20.

Slow Poll Retry Freq

This Þeld is conÞgurable only for ports conÞgured for multidrop (see Multidrop parameter above), and determines the frequency that control units (CU) on the slow poll list are polled. It speciÞes the number of times active CUs will be polled between pollings of the CUs on the slow poll list (see Slow Poll Retry Count, above). The higher the number, the more times active CUs will be polled, and the less frequently CUs on the slow poll list will be polled. The default value for this parameter is 20.

Use EBCDIC

This read-only parameter indicates that all devices on a line will use the EBCDIC character set for session polls. Because the FRX and SmartSwitch 1800 only support the EBCDIC character set, this value is always set to Yes.

Call Info in Request Packet

This read-only parameter is set to Yes, and indicates that call information will be included in a call request packet.

Transparent Text Supported

This read-only parameter is set to Yes, and indicates that all transmitted characters, including control character sequences, will be treated as data.

This parameter is useful for transmitting binary data and machine language computer programs without special coding. Data-link control character sequences transmitted this way must be preceded by a Data Link Escape (DLE) character (a value of 10 in hex) in order to be recognized as control characters.

8-4

Configuring BSCI Ports

Page 159 Page 161
Page 160
Image 160
Cabletron Systems FRX6000 Error Retransmit Count, NAK Retry Count, Multidrop, Slow Poll Retry Count, Slow Poll Retry Freq
Page 159 Page 161

1800, FRX4000, FRX6000 specifications

Cabletron Systems, a leading player in network management and telecommunications solutions during the late 20th century, introduced several innovative products that played a crucial role in shaping enterprise networking. Among these were the Cabletron FRX6000, FRX4000, and the FRX1800, which delivered advanced features aimed at enhancing network performance, security, and scalability.

The Cabletron FRX6000 was designed as a robust multi-layer switch, ideal for large-scale enterprise environments. It supported extensive routing capabilities, allowing organizations to manage traffic efficiently even under heavy loads. The FRX6000 boasted high throughput rates and low latency, making it suitable for demanding applications. With support for various network protocols, including IP, IPX, and AppleTalk, its adaptability made it a versatile choice for diverse networking needs. Moreover, security features like VLAN support and Access Control Lists (ACLs) provided enhanced protection against potential threats.

Moving to the FRX4000, this model offered a balance between performance and cost-effectiveness. The FRX4000 maintained many of the essential features of its larger counterpart while catering to medium-sized enterprises. It provided Layer 3 routing and could handle multiple simultaneous connections, ensuring seamless communication across departments. The modular design allowed for easy upgrades, enabling businesses to expand their network infrastructure without significant overhauls. This made the FRX4000 an attractive option for organizations looking to optimize their network investments.

Lastly, the FRX1800, designed for small to medium businesses, focused on simplicity and ease of use while still incorporating powerful network management capabilities. Its user-friendly interface made it accessible for organizations lacking extensive IT resources. The FRX1800 provided essential functionalities such as Integrated Layer 2 switching and routing, network monitoring, and basic security features, ensuring that even smaller companies could maintain efficient, reliable networking without overwhelming complexity.

All three models utilized advanced technologies, including a high bandwidth backbone and state-of-the-art switching architecture, to enable fast and reliable data transfer. They also supported Quality of Service (QoS) mechanisms, allowing businesses to prioritize critical applications and ensure consistent performance across the network.

In summary, the Cabletron FRX6000, FRX4000, and FRX1800 were pivotal in enhancing network capabilities, providing organizations with scalable, secure, and high-performance options tailored to their specific needs.
Top Page Image Contents