X.25 Port Trace Example

The following is an example of an X.25 port LAPB trace of Modulo 128 link acti- vation:

01SABME P

01UA F

03

I

N(R) 0 N(S) 0 (0005):1000FB0700

01

I

N(R) 1 N(S) 0 (0005):1000FB8700

01

RR

N(R) 1

03

RR

P N(R) 1

03

RR

F N(R) 1

01

RR

P N(R) 1

01

RR

F N(R) 1

SDLC HPAD Port Trace Example

The following is an example of an SDLC HPAD (level 2) port trace - Controller Address 03 Modulo 8 Link Activation and SNA PU and LU (Destination Address Field 02) activation. Note that this controller is but 1 on a 3 drop multipoint line. The other 2 are addressed 01 and 02 and are in Normal Response Mode already (activated and exchanging Receiver Ready's).

01RR P N(R) 3 Receiver Ready Poll for controller 01 ( P means Poll bit is set)

01RR F N(R) 1 Receiver Ready Response from controller 01 (F means Final bit set/nothing to send,

02

RR

P N(R) 5

or done)

 

02

RR

F N(R) 7

 

 

03

SNRM P

 

 

03

UA

F

 

 

01

RR

P N(R) 3

 

 

01

RR

F N(R) 1

 

 

02

RR

P N(R) 5

 

 

02

RR

F N(R) 7

 

 

03

RR

P N(R) 0

 

 

03

RR

F N(R) 0

 

 

03

I

N(R) 0 N(S) 0 (0020):2D00000037826B80001102010500000007DB0000

SNA

01

RR

P N(R) 3

ACTPU RU REQ

01

RR

F N(R) 1

 

 

02

RR

P N(R) 5

 

 

02

RR

F N(R) 7

 

 

03

RR

P N(R) 0

 

 

03

I

N(R) 1 N(S) 0 (0029):2D0000003782EB80001112404040404040404000

SNA

03

RR

F N(R) 1

ACTPU RU +RSP

03

I

N(R) 1 N(S) 1 (0014):2D00020037836B80000D02010000 SNA ACT LU REQ'S

03

I

N(R) 1 N(S) 2 (0014):2D00040037856B80000D02010000

 

 

03

I

N(R) 1 N(S) 3 (0014):2D00050037866B80000D02013035

 

 

03

I

N(R) 1 N(S) 4 (0014):2D00030037846B80000D02010000

 

 

01

RR

P N(R) 3

 

 

01

RR

F N(R) 1

 

 

02

RR

P N(R) 5

 

 

02

RR

F N(R) 7

 

 

03

RR

P N(R) 1

 

 

03

I

N(R) 5 N(S) 1 (0025):2D0000023783EB80000D020100858000000C0603 SNA

 

 

 

ACTLU RU +RSP

03

I

N(R) 5 N(S) 2 (0020):2C00000200000B80008106200C06030001000000

SNA

 

 

NOTIFY RU ENABLED

03

I

N(R) 5 N(S) 3 (0025):2D0000043785EB80000D020100858000000C0601

 

03

I

N(R) 5 N(S) 4 (0020):2C00000400000B80008106200C06010001000000

 

03

I

N(R) 5 N(S) 5 (0025):2D0000053786EB80000D020100858000000C0601

 

03

I

N(R) 5 N(S) 6 (0020):2C00000500000B80008106200C06010001000000

 

03

RR

F N(R) 5

 

 

03

I

N(R) 7 N(S) 5 (0014):2C00020000008B80008106200000

 

 

03

I

N(R) 7 N(S) 6 (0014):2C00040000008B80008106200000

 

 

20-10

SmartSwitch 1800 4. 0 User Guide, Rev 01

Page 307 Page 309
Page 308
Image 308
Cabletron Systems 1800 manual Port Trace Example
Page 307 Page 309

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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