Reset Causes

An SVC or PVC may be reset when an error occurs during data transmission. The reset causes transmission to be re-synchronized, and informs the user that some data might have been lost. The reset cause sent in a Reset packet provides a high-level indication of why the call was reset.

From DCE

From DTE

 

Hex.

Dec.

Hex. Dec.

Description

00

00

80

128

DTE originated

01

01

81

129

Out of order (PVC only)

03

03

83

131

Remote procedure error

05

05

85

133

Local procedure error

07

07

87

135

Network congestion

09

09

89

137

Remote DTE operational (PVC only)

0F

15

8F

143

Network operational (PVC only)

11

17

91

145

Incompatible destination

1D

29

9D

157

Network out of order (PVC only)

Restart Causes

When a port is restarted, all active SVCs and PVCs through the port are cleared. The restart cause sent in a Restart packet provides a high-level indication of why the port was restarted.

From DCE

From DTE

 

Hex.

Dec.

Hex. Dec.

Description

00

00

80

128

Local procedure error

03

03

83

131

Network congestion

07

07

87

135

Network operational

7F

127

FF

255

Registration/cancellation confirmed

Diagnostic Codes

X.25 Codes

These diagnostic codes are generated by the X.25 network in Clear, Reset, and Restart Indication packets, as well as Registration Confirmation and diagnostic packets:

Hex. Dec. Description

0000 No additional Information

01

01

Invalid P(s)

02

02

Invalid P(r)

1016 Packet Type Invalid

 

 

(Restart Transfer Phase)

 

11

17

Packet type Invalid for State r1

Packet Level Ready

12

18

Packet type Invalid for State r2

DTE Restart Request

13

19

Packet type Invalid for State r3

DCE Restart Indication

 

 

(Call Setup Phase)

 

14

20

Packet type Invalid for State p1

Ready

15

21

Packet type Invalid for State p2

DTE Waiting

B-2

SmartSwitch 1800 4. 0 User Guide, Rev 01

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Cabletron Systems 1800 manual Diagnostic Codes, Reset Causes, Restart Causes
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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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