LLC/2 Sabme Received when open 738 | Cabletron Systems FRX4000

Conﬁguring the Trap Table

SDLC No CTS on link		721
A necessary CTS was not received from the DCE.
Severity	Major (Level 2)
Action	Check the modem to make sure it is operational.

SDLC No External Clock		722
The necessary clock is not being provided.
Severity	Major (Level 2)
Action	Check the modem to make sure it is operational.

SDLC LLC/2 Remote Link Stn lost		736
The remote station is not responding. Either the Inactivity Timer (Ti) or
Acknowledgment Timer (T2) has expired.
Severity	Major (Level 2)
Action	Check the remote station to make sure it is operational.
LLC/2 DM Received		737

The remote station sent a Disconnect Mode response and the logical link is down.

Severity	Major (Level 2)
LLC/2 SABME Received when open		738

The remote station sent a SABME to the local station, but the local station had already been initialized via a SABMEÑUA exchange.

Severity	Major (Level 2)
Action	None; however, if the problem persists, contact your support
	representative.
LLC/2 FRMR Rcvd, Invalid Command		739

The remote device received an invalid or unsupported command, and returned a Frame Reject.

Severity	Major (Level 2)
LLC/2 FRMR Rcvd, IFLD not permitted		740

The remote device received an I-frame when it was not permitted, and returned a Frame Reject.

Severity	Major (Level 2)
LLC/2 FRMR Rcvd, Invalid Nr		741
The remote device received an invalid N(R), and returned a Frame Reject.
Severity	Major (Level 2)

3-28	Trap Messages

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.

Cabletron Systems FRX4000 LLC/2 Sabme Received when open 738, LLC/2 Frmr Rcvd, Invalid Nr 741

Models: 1800 FRX4000 FRX6000

SDLC No CTS on link

721

SDLC No External Clock

722

SDLC LLC/2 Remote Link Stn lost

736

LLC/2 DM Received

737

LLC/2 SABME Received when open

738

LLC/2 FRMR Rcvd, Invalid Command

739

LLC/2 FRMR Rcvd, IFLD not permitted

740

LLC/2 FRMR Rcvd, Invalid Nr

741

1800, FRX4000, FRX6000 specifications