This configuration requires Port and Subscriber ID records in node 1 for:

●Subscriber 00100 on RLP 0, Port 1

●Subscriber 123* on RLP 1, Port 3

In node 2, RLP, Port, and Subscriber records must be configured for:

●Subscriber 12301 on RLP0, port 0

●Subscriber 12302 on RLP0, port 1

●Subscriber 12303 on RLP0, port 2

●Subscriber 12304 on RLP0, port 3

If subscriber 00100 sends a Call Request with any of called addresses 12301 through 12304, node 1 searches for a match, finds 123* on Port 3, then routes the packet to node 2, RLP1, port 0, where node 2 reads the full called address in the packet and routes it out the appropriate port.

Search Order for Subscriber Addresses

A subscriber address that includes a wildcard potentially matches more addresses than one with no wildcards. For example, the address * matches all other addresses. Without a checking mechanism an address with no wildcards could be read as a match for an address with a wildcard, and sent to the wrong place. To avoid this, a search order has been established for performing call routing:

●Addresses with no wildcards will be searched first.

●Addresses with only ? wildcards will be checked next.

●Addresses with * will be checked last.

Within each wildcard group, addresses with the most non-wildcard digits will be checked first. For example, 311012345678* will be checked before 3110*.

Hunt Group Example

Here is an example of how the hunt group function works, using the algorithm Least LCN With Thruput. The routing path process will calculate a loading factor based on the number of LCNs in use and the line speeds for each Call Request received. The method is proprietary, but is described generally here.

Ports and letter symbols in the example are:

Line

Speed

RLP 0, port 0 2400 bps

RLP 1, port 0

4800 bps

RLP 1, port 1

in failed state, but is defined as a routing path

RLP 1, port 2

9600 bps

M= The maximum bps of any operational line in this routing path group. w = The bps of an individual line.

U= A proprietary line utilization factor, taking into account the number of active VCs on the line, and the line's speed.

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Cabletron Systems 1800 manual Hunt Group Example, Search Order for Subscriber Addresses
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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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