Learn About Types Of Ethernet Cables: UTP, FTP And STP Cable
6 rows · Mar 26, · STP is a link management protocol designed to support redundant links that stops switching loops. Apr 11, · Spanning tree protocol (STP) is a Layer 2 network protocol used to prevent looping within a network topology. STP was created to avoid the problems that arise when computers compete for the ability to use the shared telecommunications path on a local area network. When too many computers try to send at the same time, overall network performance is affected and can bring all .
The professionals or experienced amateurs among us already know these cables have four twisted pairs of conductors inside. A quick note about twisted pairs: the technique was invented by Mr.
Telephone himself, Alexander Graham Bell, back in the late 19th century. Telephone cables originally had just straight conductors, but as electrical power distribution became common, interference from power lines became a common issue with the transfer of telephone signals.
Bell found that he could greatly reduce the electromagnetic interference EMI that was created by nearby electrical lines simply by twisting the telephone conductor wires. Some environments are prone to greater-than-normal amounts of EMI, so there are cables designed to provide even more protection against interference. With no stiff shielding material inside, UTP is the thinnest and most flexible Ethernet cable on the market, making it the easiest to work with and install. It also has the extra advantage of not requiring a ground connection; more on that shortly.
However, there is a difference between them. STP cable normally covers each of the twisted pairs separately with either foil or tightly-braided wire, with another layer of foil or braided shielding covering the entire conductor package. So how do you choose between them? Significant but less intense interference may allow you to save some money by using FTP cable.
Several commercial situations definitely call for FTP Ethernet cabling. When you need the fastest data what is a rope worm possible or when your cable must cover long distances, the premium performance of FTP cable will make an enormous difference. It not only eliminates most EMI, but also prevents alien crosstalk that occurs at high speed between twisted pairs.
Shielded cables are best installed and maintained by professionals; of course, those are the people most likely to use them since UTP is sufficient for almost all home and casual applications. Finally, a little extra information for the sake of completeness. Crossover cables what is a strategic default of mortgage some of the conductor wires reversed at the connectors, but are only used these days to connect to very old computers or network switches.
Free Shipping on selected items. Featured products. Continue reading. Contact us. Toll Free What is a depreciation schedule Us. Customer Service Support: support cmple.
Business Inquiries: sales cmple.
Jan 26, · Spanning Tree Protocol (STP) is a network protocol designed to prevent layer 2 loops. It is standardized as IEEE D protocol. STP blocks some ports on switches with redundant links to prevent broadcast storms and ensure loop-free topology. With STP in place, you can have redundant links between switches in order to provide redundancy. STP is a protocol. It actively monitors all links of the network. To finds a redundant link, it uses an algorithm, known as the STA (spanning-tree algorithm). The STA algorithm first creates a topology database then it finds and disables the redundant links. May 29, · The Spanning Tree Protocol (STP) is a network protocol that ensures a loop-free topology for any bridged Ethernet local area network. STP was invented by Dr. Radia Perlman, distinguished engineer at Sun Microsystems.
It is standardized as IEEE D protocol. STP blocks some ports on switches with redundant links to prevent broadcast storms and ensure loop-free topology.
With STP in place, you can have redundant links between switches in order to provide redundancy. To better understand the importance of STP and how STP prevents broadcast storms on a network with redundant links, consider the following example:. Both switches receive the frame and forward the frame out every port, except the port the frame was received on. So SW2 forwards the frame to SW3.
SW3 receives that frame, and forwards it to SW1. SW1 then again forwards the frame to SW2! The same thing also happens in the opposite direction. Without STP in place, these frames would loop forever. STP prevents loops by placing one of the switch ports in blocking state. That port will no longer process any frames except the STP messages. Skip to content. So, our toplogy above could look like this: In the topology above, STP has placed one port on SW3 in the blocking state.