Configuration Example

will be allocated 60/130 (46%) of the available bandwidth, and Group 2 will be allo- cated 70/130 (54%).

Group "n" Excess Priority

determines the order in which groups are given their allocations of bandwidth; the higher the number, the higher the priority.

Group "n" Use Excess Burst

will (if Y) allow traffic that falls into the Excess Burst Size to be transmitted. Any packets exceeding BE will be buffered in the SmartSwitch.

Here is an example of a typical bandwidth allocation group configuration:

Table 7-2 Bandwidth Allocation Example

Group Used For		Percentage	Excess Priority	Use Excess Burst


1	SNA	30	16	N

2	Logical Ports & Mgmt. 20		15	Y

3	IP	30	14	Y

4	IPX	20	13	Y

This configuration ensures that SNA traffic, which is very time-sensitive, will be given top priority, and will all be transmitted within the guaranteed 30% of the band- width, eliminating the risk of discarded packets. Sequenced arrival of packets is not critical among the first three groups, so those types of traffic can be configured to allow transmission above the Committed Information Rate (CIR) (described on page 7-18). (Traffic above CIR is transmitted with the Discard Eligibility bit set, which allows packets to be discarded if necessary.)

7-8	SmartSwitch 1800 4. 0 User Guide, Rev 01

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.

Cabletron Systems 1800 manual Configuration Example, Bandwidth Allocation Example

Models: 1800