06-24-2010 11:20 AM
SRX-240H supports 1000BASE-T but my ISP switch supports 1000BASE-TX. I realized that with BASE-T you must use CAT 5 and BASE-TX you must use CAT6. Will this work if I use CAT6?
06-24-2010 12:17 PM
I could get the follwoing details about cat5 & cat6.
Cat-6, is a cable standard for Gigabit Ethernet and other network protocols that are backward compatible with the Category 5/5e and Category 3 cable standards. Compared with Cat-5 and Cat-5e, Cat-6 features more stringent specifications for crosstalk and system noise. The cable standard provides performance of up to 250 MHz and is suitable for 10BASE-T, 100BASE-TX (Fast Ethernet), 1000BASE-T / 1000BASE-TX (Gigabit Ethernet) and 10GBASE-T (10-Gigabit Ethernet).
06-25-2010 02:16 PM - edited 06-25-2010 02:22 PM
You can use cat6 in place of cat5 on pretty much anything. Of more concern is that TX only uses two pair, while T uses all four. I'm guessing that the TX device will be backward compatible, maybe.
06-28-2010 01:39 AM
There is a great deal of confusion about 1000Base-T vs. -TX. TX was a short lived standard years ago, and most gigabit equipment is in fact 1000Base-T. Since the 100Mb standard was called 100Base-TX, most people use the from 1000Base-TX for gigabit. 1000Base-T can run on Cat-5E or better, including Cat-6 cables, and requires 4 pairs of wire.
07-02-2010 12:43 AM
Cat3, Cat5/5e and Cat6 are all 4-pair cables. The difference is in the inside of the cable: the relative twists of the individual pairs. The twists in Ca5/5e and Cat6 are designed to eliminate crosstalk (as was mentioned above) in 100Mbit and 1000Mbit operation.
The real-world answer is, yes, you can run Gigabit Ethernet over cat3, cat5/5e or cat6, but you'll find that the length of cable-run you can achieve will vary greatly, and your hardware vendors will only support you if you use cat6 that is within spec.
+1 678 373 4200 x125
JNCIA-ER (expired), JNCIA-SSL (ditto)