--------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: DC300020 Date: 08/03/96 From: DAVE PETRUCCI Time: 02:24am \/To: ERNEST HINTZ (Read 7 times) Subj: Re: In house LAN >HI Mike.. I happen to have a eight-port unit, and it has a collosion >light on it, which flashes from time to time. We are using both >twisted pair and connecting the BNC units to the one BNC connection, >though the flashing of the collosion light comes on from time to >time regardless if it is only BNC or TP. Any ideas what is happening >and should we attempt to reduce this, or is this just a yellow light >for our enjoyment? Ernest, As the number of active nodes increases, the likelyhood of collisions increases... The only way to decrease the collisions is to reduce the number of nodes on the segment.. Dave P. --- SLMAIL v4.5a (#1079) * Origin: The Rocket Shop BBS -=|Dover,DE|=- 302-674-4839 (1:2600/161) --------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: DC300021 Date: 08/03/96 From: DAVE PETRUCCI Time: 02:38am \/To: LEW MURRAY (Read 7 times) Subj: Re: BNC hubs..? > LM> Arcnet is 75ohm and only 2mbits. > MB> ARCnet is nominally 100 ohms. >Arcnet uses rg59 cable which is *75* ohm! The same as T.V. cable. >I really wish you'd stop trying to teach Grandma how to knit. Lew, 50 ohm, RG-8/11, Thick Ethernet 50 ohm, RG-58, Thin Ethernet 75 ohm, RG-59, Cable TV 93 ohm, RG-62, ARCNet (Source: Novell's CNE Study Guide) Dave P. --- SLMAIL v4.5a (#1079) * Origin: The Rocket Shop BBS -=|Dover,DE|=- 302-674-4839 (1:2600/161) --------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: DC400000 Date: 08/03/96 From: MIKE BILOW Time: 10:14pm \/To: JIM PALMER (Read 7 times) Subj: BNC hubs..? Jim Palmer wrote in a message to Mike Bilow: JP> Checked out my Data Comm Warehouse catalog today, Allied JP> Telesyn and DEC had 8 port BNC ethernet hubs advertised, JP> and Assante' had a 6 port BNC ethernet hub pictured but JP> they did not have a part number or list a price. The DEC JP> and Allied Telesyn models were stackable and had SMNP JP> management available, not that anything could tempt me back JP> to thin-net. I don't know what you're looking at there, but I can't find this stuff. There are plenty of hubs listed which have a BNC connector, but they are really 10Base-T hubs with all but one or two of their ports using RJ-45. The description lines are often badly written; "10-port, BNC, AUI" means that the hub has 10 ports with RJ-45, plus one BNC, plus one AUI. JP> Looking at a Cabletron catalog, they have a stand alone 8 JP> port BNC ethernet repeater and a card which fits in their JP> MMAC hub with 12 BNC ports (horiblely, they offer a 93 ohm JP> version, if wish to run nonstandard wiring in an JP> 'ethernet'type network) JP> While Bay Networks does not offer a stand alone BNC hub, JP> there is a card with 8 BNC ethernet ports for their 3000 JP> hub with (Sob!) 75 ohm (TV cable) and 93 ohm versions(3270 JP> coax) just in case you NEVER want to admit your mistakes. I've never seen any of this stuff. I suppose you could use it in non-Ethernet systems, particularly the 93-ohm versions, but I'm really mystified as to what purpose these would serve in an Ethernet coax environment. JP> None of these advertise internal termination, but they do JP> seem to be more common than you had hoped. (I have yet to JP> find a switching hub using BNC ports, but I figure it is JP> just a matter of time) As I've explained, it would be very bad from an engineering point of view to make an Ethernet device with internal termination. It has already been pointed out by someone else here that it would be bad from an administrative point of view, since you would never know what was terminated without checking. -- Mike --- * Origin: N1BEE BBS +1 401 944 8498 V.34/V.FC/V.32bis/HST16.8 (1:323/107) --------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: DC400001 Date: 08/02/96 From: MARCO VAN DEN BOVENKAMP Time: 07:01pm \/To: JEFF DUNLOP (Read 7 times) Subj: BNC hubs..? Hello Jeff! Monday 29. July 1996 01:34, Jeff Dunlop wrote to Lew Murray: JD> network. If you're talking 10base2, then it appears you're suggesting JD> the device would not have a T-connector and terminator, but would JD> rather have coax cable attached directly to the connector. Correct. I've used a few 10Base2 <--> UTP media converters like that. /\/\arco. --- * Origin: DMRT Board Two! - Movin' them bits at 64.000 bps! - (2:512/101) --------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: DC400002 Date: 08/03/96 From: LEW MURRAY Time: 02:31am \/To: SCOTT PARKS (Read 7 times) Subj: WIN95 Network install package On (02 Aug 96) Scott Parks wrote to Lew Murray... SP> Lew Murray wrote in a message to Scott Parks: LM> If you only have the floppy version, you would need to LM> copy all of the "cab" files from the floppiess to a LM> Win95 sub on the server's HD. SP> Have you tried making a WIN95 directory with DISK1, DISK2 .. etc SP> directories under it with any luck? Yes we have a site licence, SP> MS is generous with educational institutions .. at least in Seattle. SP> There are some "extra" utilities on the CD that I would like to SP> take a look at tho. SP> Any idea what the 10+ disk (service pack) is that is on MS's SP> FTP site? Yeah, I have an idea where. But, unfortunately, I have no idea what! Most of the download stuff on the ftp site is under the /softlib/msfiles sub. But there are so many files there that unless you know before hand the *name* of the file you want, it is almost impossible to find *anything*. But it is fairly easy to find on the web page. Can't you get it there? --- PPoint 2.00 * Origin: A Professional Point System (1:396/1.20) --------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: DC400003 Date: 08/03/96 From: LEW MURRAY Time: 09:53am \/To: GEORGE FLIGER (Read 7 times) Subj: BNC hubs..? On (02 Aug 96) George Fliger wrote to Lew Murray... GF> On 1 Aug 96 09:45pm, Lew Murray wrote to George Fliger: LM> On (31 Jul 96) George Fliger wrote to Lew Murray... GF> I'm not losing any sleep over it. You made the statement and I asked GF> for further information. It's you who seems to have a problem with GF> following through. You seem to feel that because someone asked for GF> more information, they've questioned your integrity. Not so. I'm, as GF> I GF> stated earlier, curious since I've never seen one of these elusive GF> devices. I happen to like being informed if that's alright with you. LM> Oh? You feel it is *my obligation* to keep you informed? Well LM> try Etherlink 16-Port. Agma, out of Houston, 800-888-0991 sells LM> them. GF> That's not what I said at all (you seem to like to put words in GF> people's mouths). GF> Yes, I guess in a way, you are obligated to some extent. YOU brought GF> up the product to prove a point. At that point it WAS your obligation GF> to GF> either put up of shut up. No. I gave you information. You can choose to believe it or not. This is *not* a "debate" forum. I'm under no obligation whatever to "put up or shut up." GF> Damn! All I wanted was further information that you seemed to know GF> first-hand. Why do you have to be such an a$$ about it? Then why are you continuing your harangue *after* I've given you the information you requested? I guess I'll just have to let the moderator deal with your last remark. GF> George GF> ... Death is Nature's way of recycling human beings. GF> --- Via Silver Xpress V4.3P BT003 GF> * Origin: Chipper Clipper * Networking fun! (1:137/2) --- PPoint 2.00 * Origin: A Professional Point System (1:396/1.20) --------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: DC400004 Date: 08/02/96 From: ROBERT TON Time: 05:51pm \/To: MIKE BILOW (Read 7 times) Subj: BNC HUBS..? >LM> Arcnet is 75ohm and only 2mbits. > > ARCnet is nominally 100 ohms. How about 93 ohms (RG-62), and 2.5 Mbps? --- FLAME v1.1 * Origin: The Grotto - Arvada, CO (303) 421-7186 V.32bis (1:104/251) --------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: DC400005 Date: 08/02/96 From: ROBERT TON Time: 06:00pm \/To: LEW MURRAY (Read 7 times) Subj: BNC HUBS..? >LM> Arcnet is 75ohm and only 2mbits. > >MB> ARCnet is nominally 100 ohms. > > Arcnet uses rg59 cable which is *75* ohm! The same as T.V. cable. > I really wish you'd stop trying to teach Grandma how to knit. Grandma's been using the wrong yarn. Arcnet uses RG-62; 93 ohms. 2.5 Mbps. Nowhere near the same as TV cable. TV cable is typically foil shielded, solid dielectric. RG-62 has a braided shield and an air dielectric. At least the 20 or 30 miles of it I've run.... -Rob --- FLAME v1.1 * Origin: The Grotto - Arvada, CO (303) 421-7186 V.32bis (1:104/251) --------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: DC400006 Date: 08/02/96 From: ROBERT TON Time: 06:09pm \/To: LEW MURRAY (Read 7 times) Subj: BNC HUBS..? > Yeah, they were. But the make is "Etherlink" and the model > is 16 Port, available right now from Agma in Houston. Phone > 800-888-0991. Amazing, and someone else was just mentioning current catalogs with these. Learn something new every day... -Rob --- FLAME v1.1 * Origin: The Grotto - Arvada, CO (303) 421-7186 V.32bis (1:104/251) --------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: DC400007 Date: 08/03/96 From: MIKE BILOW Time: 03:42pm \/To: JIM PALMER (Read 7 times) Subj: Ring around the Rosy... Jim Palmer wrote in a message to George Fliger: JP> If a station does not see the token again in the time it would JP> take it ot traverse a 20 km ring it will try to generate a new JP> token. (very bad) What should happen is dynamic adjustment. The token master should wait an "excessive" amount of time for the token to be returned. The logic behind this is to allow measurements to be made of the round trip time if the token does, in fact, return. It should then allow at least that much time for the next token. It may elect to warn you about this, since the most likely cause is that some machine is delaying the token while owning it. Personally, I would not cut someone into the ring 6 miles away. I would be more inclined to set up a separate link and route for them. -- Mike --- * Origin: N1BEE BBS +1 401 944 8498 V.34/V.FC/V.32bis/HST16.8 (1:323/107)