FDDI Cable Attachment Configurations

Dual-Attach Station (DAS)

Dual-Attach Station (DAS)

 

Adjacent DAS

 

HP router with

 

Adajacent DAS

 

(router with FDDI)

 

 

FDDI port

 

 

 

 

 

(router with FDDI)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A B

 

 

A B

 

 

 

A B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

..

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Figure D-1. Example of Dual-Attach Station Connections

This configuration gives you optional use of the optical bypass switch (page 1-19) to prevent ring wrap if an FDDI circuit becomes non-opera- tional.

1.Attach port ‘‘A’’ of the router to port ‘‘B’’ of an adjacent DAS.

2.Attach port ‘‘B’’ of the router to port ‘‘A’’ of another DAS.

Cable FDDI D

Attachments

D-3