C Gateway - Revision history

Jnc: Use our Chaosnet/Chaos distinction

2024-11-24T19:02:05Z

Use our Chaosnet/Chaos distinction

Jnc: a novelty at the time

2022-03-25T04:58:35Z

a novelty at the time

Jnc: A good start

2022-03-24T00:11:04Z

A good start

New page

The '''C Gateway''' was a multi-[[protocol]] [[router]] (one of the first two ever done), originally written at the [[MIT Laboratory for Computer Science]], and later a product for [[Proteon]] and other organizations.

The MIT version supported several [[internetworking layer]] protocols:

* [[Internet Protocol|IP]]
* [[PARC Universal Packet|PUP]]
* [[Chaosnet]]

which could be included in any combination. A number of [[physical network]]s were supported, including:

* [[ARPANET]]
* MIT Experimental 1Mbit/second ring
* [[Ethernet|Experimental Ethernet]]
* [[Chaosnet]]
* Proteon 10 Mbit/second ring
* [[Ethernet]]
* [[Asynchronous serial line]]

again, in essentially any configuration. The [[Address Resolution Protocol]] was implemented for use on the Ethernet.

It ran under the [[MOS operating system]], and was written in [[C programming language|C]] (hence the name; the 'Gateway' is because it predates the adoption of the term 'router'). The code used a set of [[macro]]s for [[type]] definitions which allowed it to later be easily made [[portable]].

The C Gateway originally ran on [[QBUS]] [[PDP-11]]'s; initially the [[LSI-11/2]]. It was later enhanced to use the [[KDF11-A CPU]], and in particular use the [[PDP-11 Memory Management]] available on that machine to support more [[packet]] [[buffer]]s, and leave all the low memory available for use by the C Gateway's code and data. It was eventually moved to run on the [[Intel 80286]]; the Proteon product ran on the [[Motorola MC68000]], and later the [[AMD 29000]].

==External links==

* [http://web.mit.edu/Saltzer/www/publications/nin/csr-nin-025.pdf 545 Technology Square Internet Status] - lists the first C Gateways at MIT
* [https://historyofcomputercommunications.info/section/14.18/proteon/ Internetworking: Emergence 1985-1988] - cover the Proteon connection, but gets some of the details wrong

[[Category: Networking Software]]

@@ Line 5: / Line 5: @@
 * [[Internet Protocol|IP]]
 * [[PARC Universal Packet|PUP]]
-* [[Chaosnet]]
+* [[Chaosnet|Chaos]]
 which could be included in any combination. A number of [[physical network]]s were supported, including:
@@ Line 21: / Line 21: @@
 It ran under the [[MOS operating system]], and was written in [[C programming language|C]] (hence the name - it was likely the first [[packet switch]] of the [[Internet]] project written in C; the 'Gateway' is because it predates the adoption of the term 'router'). The code used a set of [[macro]]s for [[type]] definitions which allowed it to later be easily made [[portable]].
-The C Gateway originally ran on [[QBUS]] [[PDP-11]]'s; initially the [[LSI-11/2]]. It was later enhanced to use the [[KDF11-A CPU]], and in particular use the [[PDP-11 Memory Management]] available on that machine to support more [[packet]] [[buffer]]s, and leave all the low memory available for use by the C Gateway's code and data. It was eventually moved to run on the [[Intel 80286]]; the Proteon product ran on the [[Motorola MC68000]], and later the [[AMD 29000]].
+The C Gateway originally ran on [[QBUS]] [[PDP-11]]'s; initially the [[LSI-11/2]]. It was later enhanced to use the [[KDF11-A CPU]], and in particular use the [[PDP-11 Memory Management]] available on that machine to support more [[packet]] [[buffer]]s, and leave all the low memory available for use by the C Gateway's code and data. It was eventually moved to run on the [[Intel 80286]]; the Proteon product later ran on the [[Motorola MC68000]], and later the [[AMD 29000]].
 ==External links==

@@ Line 19: / Line 19: @@
 again, in essentially any configuration. The [[Address Resolution Protocol]] was implemented for use on the Ethernet.
-It ran under the [[MOS operating system]], and was written in [[C programming language|C]] (hence the name; the 'Gateway' is because it predates the adoption of the term 'router'). The code used a set of [[macro]]s for [[type]] definitions which allowed it to later be easily made [[portable]].
+It ran under the [[MOS operating system]], and was written in [[C programming language|C]] (hence the name - it was likely the first [[packet switch]] of the [[Internet]] project written in C; the 'Gateway' is because it predates the adoption of the term 'router'). The code used a set of [[macro]]s for [[type]] definitions which allowed it to later be easily made [[portable]].
 The C Gateway originally ran on [[QBUS]] [[PDP-11]]'s; initially the [[LSI-11/2]]. It was later enhanced to use the [[KDF11-A CPU]], and in particular use the [[PDP-11 Memory Management]] available on that machine to support more [[packet]] [[buffer]]s, and leave all the low memory available for use by the C Gateway's code and data. It was eventually moved to run on the [[Intel 80286]]; the Proteon product ran on the [[Motorola MC68000]], and later the [[AMD 29000]].