System Communication Architecture: Difference between revisions
From Computer History Wiki
Jump to navigationJump to search
m Jnc moved page Systems Communication Architecture to System Communication Architecture: Proper name, per the DTJ |
m Added a description of the SCA model in words |
||
| Line 2: | Line 2: | ||
The '''System Communication Architecture''' (given as '''Systems Communication Architecture''' in some documents) is [[Digital Equipment Corporation|DEC]]'s [[data network]]ing [[architecture]] for [[VAXcluster]] systems; it defines the major constituent [[protocol]]s, what functions each one performs, and how they interact. It allows the basic data-communication mechanism of a VAXcluster, the [[Computer Interconnect]], to be shared between the numerous functions needed to operate the VAXcluster. | The '''System Communication Architecture''' (given as '''Systems Communication Architecture''' in some documents) is [[Digital Equipment Corporation|DEC]]'s [[data network]]ing [[architecture]] for [[VAXcluster]] systems; it defines the major constituent [[protocol]]s, what functions each one performs, and how they interact. It allows the basic data-communication mechanism of a VAXcluster, the [[Computer Interconnect]], to be shared between the numerous functions needed to operate the VAXcluster. | ||
The System Communication Architecture has got a three-tier model consisting of the layers (from top to bottom): | |||
* System Application (SYSAP), using the SYSAP Protocol | |||
* System Communications Services (SCS), using the SCS Protocol | |||
* Port/Port Driver Layer, using the PPD Protocol | |||
{{semi-stub}} | {{semi-stub}} | ||
Revision as of 19:37, 29 April 2024
The System Communication Architecture (given as Systems Communication Architecture in some documents) is DEC's data networking architecture for VAXcluster systems; it defines the major constituent protocols, what functions each one performs, and how they interact. It allows the basic data-communication mechanism of a VAXcluster, the Computer Interconnect, to be shared between the numerous functions needed to operate the VAXcluster.
The System Communication Architecture has got a three-tier model consisting of the layers (from top to bottom):
- System Application (SYSAP), using the SYSAP Protocol
- System Communications Services (SCS), using the SCS Protocol
- Port/Port Driver Layer, using the PPD Protocol
External links
- The System Communication Architecture, in DTJ, Vol. 1 No. 5, September, 1987 (pp. 24-30 of the PDF)
