Frame Relay Status and Configuration

N3 Monitored Events Count

The monitored events count deÞnes the number of error-free polling cycles that must occur before the DCE is declared active if the Þrst poll resulted in an error. If the Þrst poll is error-free, the DCE is declared active immediately.

If the N2 Error Threshold is exceeded during the N3 count, the DCE will be declared inactive, and the N3 count will be restarted.

T1 Link Integrity Timer

This value determines how often (in seconds) the logical DTE will initiate a status enquiry to its connected DCE, checking the status of the network link. Note that this value only has an effect when the selected port has been conÞgured as the DTE (or user-side equipment); see N1 Polling Count, above, for more information.

T2 Polling Verification Timer

The T2 Polling VeriÞcation Timer determines how long (in seconds) the logical DCE will wait for a status enquiry from its attached DTE before recording an error. This value only has an effect when the selected port has been conÞgured as the DCE.

Maximum Supported VCs

This value deÞnes the maximum number of virtual circuits (or DLCIs) that can be supported by the selected serial port. This value is generally determined by your frame relay service provider.

Physical Port Interface

The physical port interface is deÞned by the portÕs connector and cabling type, and must be conÞgured as follows:

¥For the FRX4000 and SmartSwitch 1800, port 0 and port 1 are always RS-232;

NOTE

If you have installed the optional CSU/DSU card on an FRX4000 or SmartSwitch 1800, it will logically take port 1, and you must conÞgure certain CSU/DSU parameters through console management. Refer to your FRX or SmartSwitch 1800 hardware documentation for more information.

¥For the FRX4000, ports 2 and 3 are determined by the attached cables: RS-232, V.35, RS-449, or X.21;

¥For the SmartSwitch 1800, ports 2 and 3 are determined by the attached cables: RS-232, V.35, or RS-449;

¥For the FRX4000, ports 4-7 are determined by the expansion Line Interface Card (LIC) and attached I/O cables. Only the valid interfaces will be listed from the menu button. Possible interfaces are: RS-232, V.35, RS-449, and X.21. (RS-449 and X.21 interfaces require an RS-422 LIC.)

Configuring Frame Relay Ports

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Cabletron Systems FRX4000, FRX6000, 1800 N3 Monitored Events Count, T1 Link Integrity Timer, T2 Polling Verification Timer
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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.
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