John E. Perry wrote:
James Knott wrote:
G T Smith wrote:
John E. Perry wrote:
Russell Jones wrote:
... Disagree. For 100Mbps, just get Cat. 5. It'll work fine. Spend your pennies on something else.
Same here. I have my home network connected with cat-5E (only a little more costly than cat-5 when I bought it, and it runs 100Mbps just fine -- even over the 40 ft to my son's room. John Perry
If I remember correctly shielding is a two way thing, basically you are running a potential 40ft radio aerial in the latter case. If you have a lot of cables or have anything which is sensitive to radio emissions close by, Cat 6 starts making sense.
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There are two ways to reduce interference to & from a cable. Those are shielding and twisted pairs. UTP cable, including CAT 6 relies on twisted pairs to reduce interference. Unless the twist rate for CAT 6 is significantly more than CAT 5, there will be little difference between the two for interference purposes.
In fact, twisting is superior to shielding in practical installations, unless there's a great deal of near-field interference, when shielding can be really effective. But the purpose of the high-quality cables is to preserve waveform fidelity, which is why the more carefully made cables give better bandwidth.
I didn't know cat-6 cables were available yet. I'll have to give it a look.
This is true, but they won't give you any better performance for 100Mbps. If there's an EMR source bad enough to affect them, you should work around it (move it or the cables, or perhaps shield them better, e.g. with metal ducting) not replace them with Cat. 6, or other more heavily shielded cable, unless there's really no other way. In normal situations, though, you just don't need them. You can put bundles of dozens of shielded Cat. 5 cables in your walls without any problems of crosstalk (doing this redundantly is a good way of being prepared for faults in cables that may develop later). By all means though, buy shielded rather than unshielded Cat. 5 (or Cat. 5e if you want to be pedantic; but you can't easily get anything else, so it's not a very relevant distinction). -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org