SDLC

 

1

SS1800 1

SS1800 2

 

PUs

Frame Relay or X.25

SS1800 1SS1800 2

2

PUs

3

SS1800

Host

Host

PUs

Router

Frame Relay PVC

Host

SDLC

4SS1800

PUs

Figure 9-1 SDLC/LLC2 Examples

FEP

HOST

Required Configuration

To run SNA in a SmartSwich 1800, make sure the following are properly configured:

●Node parameters (Chapter 4). This is general configuration that must be done no matter which protocols will be run in the node.

●Loaded protocols (Chapter 5): SNA, as well as the transport protocol: frame relay or X.25; and LLC2 if connecting to LLC2 devices or if if the transport pro- tocol will be frame relay. If LLC2 will be used, Bridging must also be loaded.

●If LLC2 is being configured, LAN port (page 6-5) that will connect to the LAN(s).

●Frame relay (Chapter 7) or X.25 (Chapter 8) port(s) that will connect to a network or frame relay PVC.

●SNA port(s) (page 9-4) that will connect to the user devices, if the connection will be SDLC.

●SNA HPADs and TPADs (page 9-5), which identify any SDLC devices that will communicate with SNA host and terminal devices.

●Subscriber IDs (page 9-14)to identify the user devices.

●If LLC2 is being configured, Virtual LAN ID (page 9-17). Since an Smart- Switch is seen to LLC2 as a virtual LAN, an ID must be specified to identify the node to LLC2.

●LLC2 hosts (page 9-18)and interfaces (page 9-26), if the SDLC device(s) will be connected to the node via a LAN, or if SDLC will be transported over frame relay per RFC 1490.

Configuring SNA

9-3

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Cabletron Systems 1800 manual SDLC/LLC2 Examples
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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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