According to rfc 100Base-T which cable use?

Please reference the Teks technical Specificatii rfc, if possible.
July 9th 19 at 12:48
1 answer
July 9th 19 at 12:50
100BASE-T is any of several Fast Ethernet standards for twisted pair cables, including: 100BASE-TX (100 Mbps over two-pair Cat5 or better cable), 100BASE-T4 (100 Mbps over four-pair Cat3 or better cable, defunct), 100BASE-T2 (100 Mbps over two-pair Cat3 or better cable, also defunct). The segment length for a 100BASE-T cable is limited to 100 metres (328 ft) (as with 10BASE-T and gigabit Ethernet). All are or were standards under IEEE 802.3 (approved 1995). Almost all 100BASE-T installations are 100BASE-TX.

In the early days of Fast Ethernet, much vendor advertising centered on claims by competing standards that said vendors' standards will work better with existing cables than other standards. In practice, it was quickly discovered that few existing networks actually met the assumed standards, because 10 Megabit Ethernet was very tolerant of minor deviations from specified electrical characteristics and few installers ever bothered to make exact measurements of cable and connection quality; if Ethernet worked over a cable, no matter how well it worked, it was deemed acceptable. Thus most networks had to be rewired for 100 Megabit speed whether or not there had supposedly been CAT3 or CAT5 cable runs.[citation needed]
So, for what stretched cable 2 pair instead of 4 provider have nothing to show? :( - athena9 commented on July 9th 19 at 12:53
: I'm sorry, but for that to show you have rate Gigabit? Or the contract stipulates that the provider is obliged to stretch before you shielded UTP cable category 6E? To transfer data to one of the Gigabit Ethernet uses only 2 pairs, 4 are needed for Gigabit and fast connection. Provider save on cable, but the signal quality is not affected. - Americo_Kuvalis commented on July 9th 19 at 12:56
Yes, but because of this saving Gigabit router does not understand that it stuck. Necessary through the commutator to connect to Gigabit router, otherwise he just doesn't see the cable provider. Directly to a network PC/laptop the same story. Only works in the 10MFDX, 100 megabit is not drawn(it gives an error that the cable is not connected) :( - athena9 commented on July 9th 19 at 12:59
: And this is very strange behavior. I had a provider who was pulling 2 pairs and all the equipment normally understand what type of connection goes. Perhaps the problem is a bad connection, or the cable length equal to almost 100 meters. Try pereolat cable with his hand, and then you can write to the tech support provider, even check it out. Or even "brilliant crutch" to offer the provider to throw your cable from their equipment to you, the idea they can take this experiment. - Americo_Kuvalis commented on July 9th 19 at 13:02
: once two different devices do not specify the cable as cat5+, it is highly likely that problems with the cable.
: cat6e exist in nature, only marketologov. - Gregg_Kovac commented on July 9th 19 at 13:05
: Well, actually, you can demonstrate the technique that your equipment is not connected to the purchased speed, and may solve the problem.

Honestly, one customer for the ISP is always not too important to devote to one person funding pokupaetsya. So if the provider to your door it's enough power and the problem is only in the last mile - you can buy your cable and give the paw technique, which will proginet and include it in the port. And have a normal Internet.

PS I am almost a year on the Gigabit lived, paying for 100 Mbps. Then officially bought Gigabit. - Jeff28 commented on July 9th 19 at 13:08
: I offered to go to the attic and stick in the hub patch cord with my laptop - the technician refused. Don't want one person to bother - athena9 commented on July 9th 19 at 13:11
: Money technique offered? ;) - Jeff28 commented on July 9th 19 at 13:14
: no :) - athena9 commented on July 9th 19 at 13:17
: then a Cup of tea... ) - emerson.Bechtel commented on July 9th 19 at 13:20
I have three times to call the repairmen had not yet compress it efficiently.
You have a problem most likely in it. Try pereolat both ends - sheldon_Schuppe commented on July 9th 19 at 13:23

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