Configuring an SNA Port

Once the necessary Node (Chapter 4) and RLP (Chapter 5) parameters have been con- figured, press [A] at the Port Configuration Menu (or [A], [C], [A] from the Main Menu. When prompted, enter a port number (or press [Enter] to accept the default of 0). Valid port numbers depend on the model of SmartSwitch 1800—see port locations on page 6-1.

The display for an existing port will show the configured parameter values, while the display for a new port will show default database values. (See Table 9-1and Table 9-2.) The following figure is an example of an existing port.

 

 

 

N ode Name=n odexyz

S NA Port Parameters

 

 

*

Port 0

Link State

Linku p

*

I/O: UN IVER SAL

D atabase

Sys tem Memory

A

Port Type

S NA

SN A

B

Name

s na1

sn a1

C

Ph ysical Port I nterface

V .35

V. 35

D

Blocked Port Flag

N

N

E

Lin e Sp eed

64k bp s

64k bp s

F

No Data Poll Period (ms )

40

40

G

No Resp Poll Period (ms)

2000

2000

H

Maximum Retransmiss ion s

5

5

I

Ou tstand in g Frames

7

7

J

Generate Clock

Y

Y

K

Rcv C lock (TT) from D TE

N

N

L

SNA Typ e

2 hpad

2 hpad

M

NRZ

Y

Y

N

Packet Size

1024

1024

OAdd itional SNA Port Parameters

PSDLC PU Op erations

Option:

Figure 9-2 SNA Port Screen 1

[A],[C],[A] from Main Menu

After making any changes, be sure to press [F 7] to update the system memory. Otherwise, the changes will not take effect until the next re-boot of the SmartSwitch 1800.

After configuring the above screen, press [O] to display a second screen. (The param- eters for both screens are listed in Table 9-1on page 9-6.)

You must also define the PUs (physical units) that will communicate via the SNA port. Once the Additional SNA Port Parameters are configured, press [F3] to return to Figure 9-2,then press [P], [A] to display a list of configured PUs, or [P], [B] to configure a PU.

If configuring a PU, enter (when prompted) an SDLC PU Station Address: 01–FE(hex). This address identifies the PU you are configuring, and must match the ADDR parameter set in the macro PU in the VTAM configuration. (The station address is usually set to C1 for point-to-point SDLC lines, and in series C1, C2, C3, etc. for mul- tidrop lines.)

9-4

SmartSwitch 1800 4. 0 User Guide, Rev 01

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Cabletron Systems 1800 manual Configuring an SNA Port, SNA Port Screen
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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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