What is the difference between 100 MBPS on optic fiber and 100 MBPS on coaxial cable?
People have this all wrong. 100 Mbps cable internet is not the same as 100 Mbps fiber optic internet, most of the time.Why? The reason has to do with how cable modems work. In order to achieve 100 Mbps, your cable modem splits the transmission up across multiple frequencies (or bands). This results in packets being sent and received out of order, based on congestion and other factors at any given moment on the particular band. As a result, your cable modem created a data buffer so it can re-order the packets and send them to your PC or home router in order. This delay can be 25ms or more.Fiber connections, particularly when used in a local network (for example, connecting branch offices across town) usually have latency in the 1ms to 2ms range.So let's do the math of transmitting a 1 million byte file.Fiber optic:1,000,000 / 100,000,000 = 0.01 s + 0.002 s for transmission delay = 0.012 sso it takes 12 ms for the file to arrive via fiberCable Connection:1,000,000 / 100,000,000 = 0.01 s + 0.035 = 0.045 s or 45 ms for the file to arrive.So transmitting a 1mb file over a cable modem is usually about 4 times slower.As your file size decreases, this difference in timing gets more and more substantial, and the feel of fiber can make a HUGE difference when using applications over the connection that connect to databases, etc.As the file size increases, for example - downloading a move, the difference becomes irrelevant.So think LATENCY impact, not just pure Mbps.
What is the difference between Cisco 3650 and 3850 Switches?
Cisco Catalyst 3650 Series Switches are the next generation of enterprise-class standalone and stackable access-layer switches, supporting 24 and 48 10/100/1000 data and PoE+ models with energy-efficient Ethernet (EEE) supported ports. These switches also save space with only 12-inch lower depth form factor. Furthermore, the Catalyst 3650 Series can deliver up to 88 Gbps on 24-port models and 176 Gbps on 48-port models.Cisco Catalyst 3850 Series Switches are multigigabit and 10Gb switches. They support 24 and 48 100Mbps/1/2.5/5/10 Gbps Cisco UPOE models with energy-efficient Ethernet (EEE). These switches also can provide 480 Gbps of stack throughput with Cisco StackWise-480 technology Overall, the 3850 Series can simplify operations, get the reliability you need, and deliver better mobile experiences to your employees and customers.Here are some information from Cisco. The whole PDF: http://www.cisco.com/assets/glob...
What is the difference between a switch, hub, and router?
Aside from the fact that it states what it is on the device, can anyone tell me the specific differences between these items? When do you use which device? Also when would you choose a wireless device or a hard wired? thanks Tina
What is the difference between a router and a network card?
A network card is a devised either installed inside a desktop computer or a card that slides into a laptop. A router is the piece that will allow you to recieve wireless internet and networking from the devise with the network card installed.
What do the different colors of lights in an Ethernet port mean?
Flashing lights mean activity - no matter what the light is. If it is US/DS, then it is on the Upstream and Downstream. If it is ONLINE, then it almost done connecting to the internet. If it is on WIFI or ethernet then it communicating with one or more devices on your network. That’s a good sign. You don’t want that light off if you have a device plugged into the ethernet. That’s bad.Now as far as colors. That is determined by the manufacturer of the device. There is no standard color when it comes to routers or modems. It’s all different! Since I don’t know the manufacturer or model of the device I will just have to use an example. That is an Arris DG1670A. Which is commonly used with Charter Business Accounts.That model has two color lights on the back: Green/Amber. Green means that the port is running at 1 Gbps. Amber means that it is running at 100 Mbps. If you see Amber that means something connected to that port is not compatible with gigabit speeds. The device automatically slowed itself down to compensate.Is that a problem?Provably not. Most internet speeds are not fast enough for you to notice. Only at speeds faster than 100 are you going to notice the difference. Or if you transfer large files between the computers. Otherwise - your fine for now. Worry about it when it becomes a problem.If you want more specific information then please include the model and make of your router. That will help us explain more. Hope that helps you understand modem/router lights. Take care.
If a Switch is Labelled 10/100 MB/s And It have 10 Ports. So will it limit the max bandwidth on every port?
A2A,IT depends on the file transfer scenario:If User A sends a File to User B of 100 MB on Local LAN using a LAN switch, then file is transferred at full 100 Mbps or whatever max speed is negotiated between the ports.If however the file is being sent to a different network like over the Internet in that case The Switch or The Internet Router would throttle speed based on number of connections and available bandwidth, though not necessarily in equal measures of 10 Mbps.
ADSL - router - switch question?
You don't need a gigabit router if your inbound connection is less than 100Mbs. The gigabit switch will improve internal performance as long as the client machines all have gigabit internal cards. The bottleneck is going to be the ADSL connection. We have a 2Mbps T1 fiber connection here and have a 10/100 switch. All our client machines have 10/100/1000 cards so I'm thinking about upgrading to a 10/100/1000 switch (but they are pricey) to increase network performance. It won't do anything for Internet traffic though because the slowest connection is still the 2Mbps T1.
Do I need a gigabit switch, or is 10/100 ok for home office use?
I would consider a plain 10Mbit/s switch to slow. A 100Mbit/s would be sufficient. But the extra cost for a 1000Mbit/s is getting smaller for every day that passes, so why not. Then you are likely not to need a LAN hardware change when you get fiber and you will save money totaly… Also run all cables with at least CAT 5e cables. On the other side 10/100 gear can be picked up from trash bins so the cost could be zero, in that case start with that. 100Mbit/s worked for me for 15 years until I got fiber. 100Mbit/s is sufficient for at least 3 Netflix UHD videostreams, or minimum 20 normal office users in real work.
Does a 100mbps switched ethernet mean 100mbps bandwidth for each distinct connection A to B simultaneously within the network or the sum of transfers?
Yes.....In a 100Mbps switched full-duplex ethernet network, A and B can be exchanging 100Mbps bi-directionally at the same time as C and D are exchanging 100Mbps bi-directionally. But also no...However, there are limits to this - the switch fabric determines the maximum total bandwidth a switch can handle. Switches typically cannot handle the max speed of all their ports simultaneously, except in very expensive enterprise equipment.
How to use a D-Link DES-1005D 5 Port Fast Ethernet Desktop Switch?
I recently installed streamyx and bought a "switch" (model as mentioned above). I have no idea how to use it. Currently, only 1 computer at a time has internet access. How do I set it up so that 2 computers can simultaneously have internet access?