ERR – is a response to an invalid command.

ERR NC – indicates a network congestion error.

FRAMING ERROR – indicates that the port is not finding the stop bit at the end of the character bits. This can be due to noise or a mismatch in such parameters as speed, bits/character, or stop bits between the port and its connected device.

LINE DISCONNECTED – indicates that modem signals on the port were dropped to effect a physical disconnection.

login – is a request to enter a subscriber ID.

LOGIN ACC – indicates that login was successful and the user is now connected to the network.

LOGIN REJ – indicates that login was unsuccessful.

LOGOUT ACC – is displayed when the PAD accepts a logout command.

LOGOUT REJ – is displayed when the user attempts to log out, but either the Port record was not configured to require login, or a VC on this port has not yet been cleared.

OVERRUN ERROR – indicates that the PAD is unable to cope with the rate at which characters are being received by the port, resulting in loss of characters. Enabling XON-XOFF flow control (async PAD profile parameter 5) usually corrects this error.

PAGE – indicates that a “page wait” condition ( async PAD profile parameter 22) has occurred.

PARITY ERROR – indicates a parity error on the port, due to either noise on the channel or an incompatibility between the parity settings of the port and its connected device.

password – is a request to enter a password.

PROF ACC – means the async PAD profile was accepted.

PROF REJ – means the async PAD profile was rejected.

PVC ERR – indicates that a Clear was received on a PVC port, suggesting a possible abnormality in the port configuration.

RESET – indicates a Reset received from the network.

RESET DTE – means that the network has received a Reset from the remote DTE.

SET CMD DISALLOWED – means Set Command was not allowed.

STAT ENGAGED – is a response to the Status command, indicating that a VC is cur- rently set up on the port.

STAT FREE – is a response to the Status command, indicating that no VC is currently set up on the port.

TRANSFER “nnnn” COM – indicates a called DTE reselection by the PAD to “nnnn.”

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SmartSwitch 1800 4. 0 User Guide, Rev 01

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1800 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.
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