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Cable Wars: Cat 6 vs Cat 7 vs. Cat 5e?
stone22 asks: "My company has decided to install a gigabit link. This will be initially used only for testing purposes, and on the longterm as a backbone for our corperate network. We allready decided to use copper, but what standard ? I've heard about problems using cat 7 cables (cross talk, bulky cables, non-standard connectors) so I could really use some hints from all you cabling experts out there."
Most interfaces, cards, and things of this nature have a fucking manual. I have read them myself, while shitting at the toilet at work. It clearly tells you, copper or fiber, the types of cables and lengths to use.
I would also say that fiber is a better backbone that Cu, and CAT 5e has always worked FINE with GigE - because that's what the fucking manual says.
Here, look, a 3C996-BT manual:
http://www.3com.com/products/en_US/result.jsp?sel
Direct Link to the PDF:
http://support.3com.com/infodeli/tools/nic/3c996/
In Section 11, Specifications:
CHAPTER 3: INSTALLING THE HARDWARE
Connecting the Network Cables
The adapter has one RJ-45 connector, for attaching the system to an Ethernet
copper-wire segment. When automatic link negotiation is disabled, the port can
be configured for 10 Mbps, 100 Mbps, or 1000 Mbps signaling and either
half-duplex or full-duplex operation.
Follow this procedure for connecting a network cable to the Gigabit Ethernet
adapter:
1 Prepare an appropriate cable. The following table lists the cable characteristics for
connecting to 10/100/1000Base-T ports:
Table 3 10/100/1000Base-T Cable Specifications
Port Type Connector Media Maximum Distance
10Base-T RJ-45 CAT 3, 4, or 5 UTP 100 meters (325 feet)
100/1000Base-T RJ-45 CAT 5 UTP 100 meters (325 feet)
15
2 Connect one end of the cable to the Gigabit Ethernet adapter.
3 Connect the other end of the cable to an RJ-45 Ethernet network port.
1000Base-T signaling requires four twisted pairs of Category 5 balanced cabling,
as specified in ISO/IEC 11801:1995 and EIA/TIA-568-A (1995) and tested using
procedures defined in TIA/EIA TSB95.
when the cable is properly connected at both ends, the adapter port LEDs should
be functional. See the table in Introduction for a description of adapter port LED
operation. For driver installation and configuration instructions, refer to the
software configuration for that specific driver.
Okay, so now it is clear that you are a waste of time, and a fucking illiterate idiot. Please stop wasting everyone's time, enroll in a TOEFL English class or some shit, and realize your High School in Alabama failed to teach you reading skills. You fucking idiot.
It must suck to be you, stone22. Quit sucking cock and balls and get your GED.
Damn, I think we've all just witnessed the birth of another MS fanatic. This idiot is the same kind of moron I see installing MS software whenever they get the chance. In-fact, this is the same kind of moron I see doing just about anything to a system that should have never been done..
Either take a few BASIC networking classes, and go to the efforts to get some BASIC certifications, so you can at least claim you're certifiable. Hopefully, you'll realize you're not cut out for this type of work. Either that, or just save youself the time and trouble, and do us real sysadmins a favor by getting a job you can do, maybe digging ditches, or flipping burgers...