HECnet - Revision history

Larsbrinkhoff: Home page moved.

2022-03-04T10:05:00Z

Home page moved.

← Older revision		Revision as of 10:05, 4 March 2022
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	The HECnet is a network of various DECNET machines across the internet. Using a [http://~~www~~.~~update~~.~~uu.se/~bqt~~/bridge.tar specialized bridge program], people have bridged together their systems.		The HECnet is a network of various DECNET machines across the internet. Using a [http://mim.stupi.net/bridge.tar specialized bridge program], people have bridged together their systems.

	From the [http://~~www~~.~~update~~.~~uu.se/~bqt~~/hecnet.~~html~~ homepage]:		From the [http://mim.stupi.net/hecnet.htm homepage]:
	<pre>		<pre>
	What is HECnet?		What is HECnet?

Neozeed at 20:01, 15 February 2009

2009-02-15T20:01:26Z

← Older revision		Revision as of 20:01, 15 February 2009
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	</pre>		</pre>

			There is also an Italian HECnet with quite a few nodes online...
			*http://decnet.ipv7.net/

	== Patch to bridge to add TCP/IP support ==		== Patch to bridge to add TCP/IP support ==

Neozeed: /* Patch to bridge to add TCP/IP support */

2009-02-15T19:51:51Z

Patch to bridge to add TCP/IP support

← Older revision		Revision as of 19:51, 15 February 2009
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	== Patch to bridge to add TCP/IP support ==		== Patch to bridge to add TCP/IP support ==
	The following will add TCP/IP support into the above bridge program. On the [[SIMH ~~Networking~~]] page you can find the code section to compile a HECnet client into [[SIMH]].		The following will add TCP/IP support into the above bridge program. On the [[Networking with SIMH]] page you can find the code section to compile a HECnet client into [[SIMH]].

	<pre>		<pre>

Neozeed at 19:51, 15 February 2009

2009-02-15T19:51:25Z

← Older revision		Revision as of 19:51, 15 February 2009
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	</pre>		</pre>


			== Patch to bridge to add TCP/IP support ==
			The following will add TCP/IP support into the above bridge program. On the [[SIMH Networking]] page you can find the code section to compile a HECnet client into [[SIMH]].

			<pre>
			--- bridge.c Mon Aug 6 07:50:45 2007
			+++ bridge-ip.c Sun Feb 15 12:23:43 2009
			@@ -61,6 +61,9 @@
			#define ETHERTYPE_LAT 0x6004
			#define ETHERTYPE_MOPDL 0x6001
			#define ETHERTYPE_MOPRC 0x6002
			+#define ETHERTYPE_IP 0x0800
			+#define ETHERTYPE_ARP 0x0806
			+#define ETHERTYPE_REVARP 0x8035

			#define MAX(a,b) (a>b?a:b)

			@@ -71,6 +74,9 @@

			struct bpf_insn insns[] = {
			BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 12),
			+ BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ETHERTYPE_REVARP, 7, 0),
			+ BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ETHERTYPE_ARP, 6, 0),
			+ BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ETHERTYPE_IP, 5, 0),
			BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ETHERTYPE_MOPRC, 4, 0),
			BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ETHERTYPE_MOPDL, 3, 0),
			BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ETHERTYPE_LAT, 2, 0),
			@@ -95,8 +101,8 @@
			When data arrives, we filter, process and send it out again.
			*/

			-typedef enum {DECnet, LAT} pkttyp;
			-#define MAXTYP 2
			+typedef enum {DECnet, LAT, IP} pkttyp;
			+#define MAXTYP 3

			struct BRIDGE {
			char name[40];
			@@ -326,6 +332,7 @@
			if(strcmp(buf,"[lat]") == 0) mode = 2;
			if(sscanf(buf,"[source %d.%d]", &area, &node) == 2) mode = 3;
			if(strcmp(buf,"[relay]") == 0) mode = 4;
			+ if(strcmp(buf,"[ip]") == 0) mode = 5;
			if(mode < 0) {
			printf("Bad configuration at line %d\n%s\n", line,buf);
			exit(1);
			@@ -352,6 +359,10 @@
			break;
			case 4:
			break;
			+ case 5:
			+ if (!add_service(buf,IP,"IP"))
			+ printf("%d: IP bridge %s don't exist.\n", line, buf);
			+ break;
			default:
			printf("weird state at line %d\n",line);
			exit(1);
			@@ -380,6 +391,14 @@
			is_ethertype(data, ETHERTYPE_MOPRC));
			}

			+int is_ip(struct DATA *data)
			+{
			+ return (is_ethertype(data, ETHERTYPE_IP) \|\|
			+ is_ethertype(data, ETHERTYPE_ARP) \|\|
			+ is_ethertype(data, ETHERTYPE_REVARP));
			+}
			+
			+
			unsigned long timedelta(struct timeval old)
			{
			struct timeval now;
			@@ -496,6 +515,8 @@

			if (is_decnet(d)) d->type = DECnet;
			if (is_lat(d)) d->type = LAT;
			+ if (is_ip(d)) d->type = IP;
			+

			if (bridge[d->source].types[d->type] == 0) return;
			if (d->type == -1) return;
			</pre>

Neozeed at 19:46, 6 February 2009

2009-02-06T19:46:19Z

← Older revision		Revision as of 19:46, 6 February 2009
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			The HECnet is a network of various DECNET machines across the internet. Using a [http://www.update.uu.se/~bqt/bridge.tar specialized bridge program], people have bridged together their systems.

			From the [http://www.update.uu.se/~bqt/hecnet.html homepage]:
			<pre>
			What is HECnet?

			HECnet is a DECnet that connects different people who play around with different DEC machines.
			The network should not be regarded as a serious networking setup, nor should it be expected
			to work 24/7. It's a hobby project between people who think it's fun to create a DECnet network.
			HECnet is basically a DECnet phase IV network. Currently, the main router is a PDP-11
			running RSX-11M-PLUS. The machine is located in Uppsala, Sweden.

			The connectivity between nodes can be anything that works. The current connectivity is with
			an ethernet bridge between sites. Other solutions that have been used are a virtual serial
			async. connection talking DDCMP. Other possibilities are GRE and DECnet over IP.
			</pre>



	{{stub}}		{{stub}}


	[[Category:DECnet]]		[[Category:DECnet]]

Lucky at 01:57, 17 May 2007

2007-05-17T01:57:06Z

← Older revision		Revision as of 01:57, 17 May 2007
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			{{stub}}

	[[Category:DECnet]]		[[Category:DECnet]]

Lucky: New page: Category:DECnet

2007-05-17T01:56:53Z

New page: Category:DECnet

New page

[[Category:DECnet]]