708.SDLC Rem Stn sent Invalid Command

Severity: 2

Meaning: The remote device received an invalid or unsupported command.

Action: None.

709.SDLC Rem Stn sent unexpected IFLD

Severity: 2

Meaning: The remote device sent an unpermitted I frame.

Action: None.

710.SDLC Rem Stn sent invalid Nr

Severity: 2

Meaning: The remote device sent a frame with an invalid N(r).

Action: None.

711.SDLC Rem Stn Exceeded window size

Severity: 2

Meaning: The number of frames sent by the remote device has exceeded the window size.

Action: None.

712.SDLC Station Inactivity timer exp

Severity:

2

Meaning:

The timer defined by the parameters No Resp (Response) Poll Period

 

and Maximum Retransmissions in the SNA Port record has expired.

Action:

Check the PU to make sure it is operational.

713.SDLC XID Retries exhausted

Severity: 2

Meaning: The retry limit for XID has been exceeded, and link establishment has failed.

Action: None.

714.SDLC Rem Stn sent FRMR - no reason

Severity: 2

Meaning: The remote station sent a Frame Reject with no reason.

Action: None.

715.SDLC Remote RNR limit exceeded

Severity: 2

Meaning: The remote station is busy. This could be a hardware or buffer problem in the remote device.

22-26

SmartSwitch 1800 4. 0 User Guide, Rev 01

Page 373 Page 375
Page 374
Image 374
Cabletron Systems 1800 manual Action Check the PU to make sure it is operational
Page 373 Page 375

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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