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Thread ID: 24306	2002-09-08 03:12:00	Network Troubles	Nuts8 (1787)	Press F1

Post ID	Timestamp	Content	User
77543	2002-09-08 03:12:00	Hi, I am having some network problems. I have a network setup with several computers and a ADSL router through an 8 port 10/100 MB/s switch. The computers are using the tcp/ip and netBEUI protocals. While the network works, it is sometimes very slow and tranferring data (several minutes to bring up the contents of a computer on the network). I think it could be the cables which I made my self. I wired them as pin to pin i.e. pin 1 to pin 1, pin 2 to pin 2 etc and have tested them with a multi meter for continuity and shorts, they all test out ok. There are several OS's been run ranging from 98SE to ME to XP pro. All the net settings are the same on each computer and no two computers have the same computer number in the tcp/ip address. Some advice on what could be worng would be much appreciated Regards Matthew Blackmore	Nuts8 (1787)
77544	2002-09-08 03:33:00	Are you using 100MHz? If so, the cable quality is critical. Even 10 MHz can be fussy. Did you use the proper CAT5 cable? Flat "silver satin" telephone cable is NOT suitable: the cable must be proper twisted pair, and you must use pairs as pairs ... that is,you musn't just grab the nearest wire and push it into the connector. Did you use the appropriate connectors: there are two sorts -- one for solid conductor cable and one for stranded patch type cable? Did you use the correct crimping tool? These are RF cables, and must be the right impedance, without "reflecting" discontinuities. You are not supposed to untwist any pair more than about 1/2 inch.	Graham L (2)
77545	2002-09-08 04:49:00	Also they are not wired "pin for pin" in pairs there is an odd layout of pairing that has some logic to it when you consider it as RF. (The continuity is pin for pin on the finished cable though) There are some good sites on Google that detail it, and its also in the Dick Smith catalogue page 329 I have seen a crippled network come right when the cable terminations were corrected.	godfather (25)
77546	2002-09-08 04:52:00	The pins for pairs are: 1&2, 3&6 for the 2 pairs used in xxBaseT, 4&5, 7&8 for the extra pairs.	Graham L (2)
77547	2002-09-08 05:31:00	I was wondering why you are using NetBEUI rather than the NetBIOS. All of your computers can run this and it is meant to be a better protocol.	Gorela (901)
77548	2002-09-08 05:31:00	I am using the blue cat 5 cable with 4 pairs. The wires are solid but I think the crimps I am using are for strandard because they have two big stabby thing on them. I am using the right crimping tool. Thanks heaps for your replies, keep'em coming Cheers, Nuts	Nuts8 (1787)
77549	2002-09-08 05:34:00	Err, I am using netBEUI becasue it works, but I wil give netBIOS a try. Without netBEUI installed the computers dont seem to be able to see each other but the connection to the router is fine, when netBEUI is installed we can see all of the computers on the LAN.	Nuts8 (1787)
77550	2002-09-08 05:41:00	i'm open to correction but netbios insn't a protocol. the idea of running netbeui is for a small network you can useit for the windows filesharing while keeping tcp/ip for internet. makes it eaier to disable netbios over tcp/ip and close up those ports that ms leaves open(win9x/me). makes things a little bit more secure. which pc's are having the problem? heard of a few XP machines being very slow on win9x network.	tweak'e (174)
77551	2002-09-08 05:49:00	Hmmm, I tryed installing NetBIOS but there was no such protocal under the microsoft tab in the network properties. Cheers tweak'e, I didnt actually know what NetBEUI actually done, I just knew it made the network work with the router aswell	Nuts8 (1787)
77552	2002-09-08 05:55:00	All of the PC's are having the problem. Sometimes it's sweet sometimes its crap. It can take up to minutes to copy a several meg file over a 100 MB/s switch. Oh BTW all the network cards are 10/100	Nuts8 (1787)
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