![]() Or, perhaps, cars can't get onto the highway quickly because it's clogged with large delivery trucks that take up a lot of space on the road. A low-bandwidth network is like a single-lane road in which one car drives directly behind another.Īlthough the large highway is likely to move vehicles faster, rush-hour traffic can easily bring cars and trucks to a standstill.A high-bandwidth network is like a six-lane highway that can fit hundreds of cars at any given moment.While high-bandwidth networks are often fast, that is not always the case.Ī helpful metaphor when thinking about bandwidth is cars on a highway: One point to consider when thinking about how to calculate bandwidth needs on your network is this: Bandwidth should not be confused with throughput, which refers to speed. For example, a 1000BASE-T - which uses unshielded twisted pair cables - Gigabit Ethernet (GbE) network can theoretically support 1,000 Mbps, but this level can never be achieved in practice due to hardware and systems software overhead. Network bandwidth represents the capacity of the network connection, though it's important to understand the distinction between theoretical throughput and real-world results when figuring out the right bandwidth formula for your network. Bandwidth is usually expressed in terms of bits per second or, sometimes, in bytes per second. Data coming into the network is known as ingress traffic, and data leaving the network is called egress traffic. It represents both volume and time, representing the amount of data that can be transmitted between two points in a set period of time. The term bandwidth refers to the data rate supported by the network connection or the interfaces that connect to the network. ![]() Wondering how to calculate bandwidth requirements when designing the network? What specific considerations apply? The answers to these important questions follow. ![]() Unlike a server, which can be configured and reconfigured throughout the life of the network, bandwidth is a network design element usually optimized by figuring out the correct formula for your network from the outset. I think I'll let that be the last word on this topic unless something more persuasive comes in.As most network administrators can attest, bandwidth is one of the more important factors in the design and maintenance of a functional LAN, WAN or wireless network. That system (or pieces of that system, since it is really a system of systems owned and operated by multiple entities) wouldn’t fall under the “commercial item or service” restriction because the backbone itself and all the functionality it entails is not available on the commercial market – customers only have commercial access to those services and products that piggyback on and depend upon that backbone." However, Verizon-owned/operated pieces of the internet backbone as a system certainly could be designated as covered critical infrastructure. So Verizon per se would not be regulated, and Verizon’s commercial services – internet access, email accounts, etc. In looking at regulation, “Verizon” as a company would not be regulated, because that’s not how the approach works – it targets systems, not companies. – but those services should not be conflated with the broader system that enables those services. There are a number of commercial IT services that depend upon that backbone for their ability to function – internet access, email, etc., etc. that allow for communications to travel via the internet. "The “backbone” of the internet is a complex system consisting of the fiber cables, peering points, core routers, network centers, etc. He offered the following, which I quote with his permission, on the topic of the Internet backbone as a commercial service: I had a pleasant email from one of the Senior Democratic Aides who I spoke of in my last post. It's nice to know that someone is reading these posts.
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