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- Straight Through -vs- Cross-Over: How to tell whether an ethernet cable is a straight-through or cross-over cable. Most standard ethernet cables are straight-through cables.
- Straight through is a CAT-5, CAT-5e, or CAT-6 Ethernet Cable with the wires connected as follows:
On both ends: Orange Stripe; Orange; Green Stripe; Blue; Blue Stripe; Green; Brown Stripe; Brown.
- Cross-over is a CAT-5, CAT-5e, or CAT-6 Ethernet Cable with the wires connected as follows:
On one end: Orange Stripe; Orange; Green Stripe; Blue; Blue Stripe; Green; Brown Stripe; Brown.
On the other end: Green Stripe; Green; Orange Stripe; Blue; Blue Stripe; Orange; Brown Stripe; Brown.
- The above conforms to TIA/EIA-568 standard. However, all that is important for a cross-over to work is for pins 1 & 2 (transmit) to switch places with pins 3 & 6 (receive) on the opposite end. For a straight through, pins should be the same on both ends.
- Color sets (ex. Orange Strip & Orange) mark twisted pairs. Keeping pin sets on the same twisted pair (i.e. pins 1 & 2 on one color set, and pins 3 & 6 on another) allows best signal quality.
- Note: TIA/EIA standard has not been established for CAT-7 or greater cabling.
- For more information see: How to Make a Network Cable
to the intended recipient.
- Classful networks. The network and host portions are as follows: "n" represents the network portion and "x" represents the host portion.
- Class A networks. The first number is between 1 to 126. 127 is a loop back subnet used to refer back to your NIC card). Example: nnn.xxx.xxx.xxx (ex. 10.xxx.xxx.xxx)
- Class B networks. When the first number is 128 to 191. Example:nnn.nnn.xxx.xxx (ex. 172.16.xxx.xxx)
- Class C networks. When the first number is 192 to 223. Example: nnn.nnn.nnn.xxx (ex. 192.168.1.xxx)
Category: How to computer