Disable Rqst Disconnect, Idle Fill Char | Cabletron Systems FRX6000

SNA Status and Conﬁguration

Receive Clock from DTE

This parameter is relevant only if the Physical Port Interface (see above) is something other than RS-232 and Generate Clock is set to Yes. If this parameter is set to Yes, it allows the clock (timing) signal to be looped back from the DTE using the Terminal Timing (TT) signal, which can be helpful on high-speed lines. Generally, if the local interface is a physical DCE and the line speed is above 256 Kbps, this parameter should be set to Yes; however, make sure the DTE is conÞgured to provide the terminal timing. The default value for this parameter is No.

Disable Rqst Disconnect

This parameter is only relevant if the PAD type is HPAD. If this value is set to Yes, it prevents the HPAD from sending a Disconnect Request to the host if the HPAD-TPAD connection is broken. The default value for this parameter is No.

Idle Fill Char

This Þeld speciÞes a character that will be inserted into the stream when the SNA link is idle. The two choices are hex-ff and hex-7e; the default value is hex-ff.

L1 Duplex

This Þeld determines level-1 signal operation on RS-232 ports. If Full is selected, RTS (Request to Send), CTS, (Clear to Send) and DCD are always high (and are raised by the appropriate side.

If Half is selected:

¥When the DTE is ready to transmit, it asserts RTS, waits for CTS to become high, then starts transmitting. When transmission is Þnished, the DTE drops RTS (and the DCE should drop CTS). DCD is low during this period.

¥When the DCE is ready to transmit, it checks to see that RTS and CTS are not high, then it raises DCD and starts transmitting. When transmission is done, the DCE drops DCD. RTS and CTS are low during this period

For both Full and Half L1-Duplex, the DTE raises DTR (Data Terminal Ready) and the DCE raises DSR (Data Set Ready).

The default value for this parameter is Full.

This parameter must be conÞgured correctly, or the PU will not become active.

CAUTION

7-6	Conﬁguring SNA Ports

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.

Cabletron Systems FRX6000, FRX4000, 1800 manual Disable Rqst Disconnect, Idle Fill Char, L1 Duplex

Models: 1800 FRX4000 FRX6000