Just to add a bit to Giuseppe's information, keep in mind packets do not have to conform to the frame size. We normally assume that the packet will just be contained by the frame, but that may not be the case although it usually is. If it doesn't, the packet per second rate will be impacted. Further when you're measuring PPS, distance latency will also impact how fast TCP ramps up and also how fast it recovers from any packet loss.
Buy or Renew. Find A Community. Cisco Community. Join us in congratulating October's Spotlight Award Winners! Turn on suggestions. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Showing results for. Search instead for. Did you mean:. All Community This category This board. How many packets I can send per second?
This is where each packet receives it's destination address, 5. Now that our message packets have a port number and an IP address, they are ready to be sent over the Internet. The hardware layer takes care of turning our packets containing the alphabetic text of our message into electronic signals and transmitting them over the phone line. On the other end of the phone line your ISP has a direct connection to the Internet. The ISPs router examines the destination address in each packet and determines where to send it.
Often, the packet's next stop is another router. More on routers and Internet infrastructure later. Eventually, the packets reach computer 5. As the packets go upwards through the stack, all routing data that the sending computer's stack added such as IP address and port number is stripped from the packets. When the data reaches the top of the stack, the packets have been re-assembled into their original form, "Hello computer 5. But what's in-between? What actually makes up the Internet?
Let's look at another diagram: Diagram 3 Here we see Diagram 1 redrawn with more detail. The physical connection through the phone network to the Internet Service Provider might have been easy to guess, but beyond that might bear some explanation. The ISP maintains a pool of modems for their dial-in customers. This is managed by some form of computer usually a dedicated one which controls data flow from the modem pool to a backbone or dedicated line router.
This setup may be refered to as a port server, as it 'serves' access to the network. Billing and usage information is usually collected here as well.
From here the packets will usually journey through several routers and over several backbones, dedicated lines, and other networks until they find their destination, the computer with address 5. But wouldn't it would be nice if we knew the exact route our packets were taking over the Internet? As it turns out, there is a way This one is called traceroute and it shows the path your packets are taking to a given Internet destination.
Like ping, you must use traceroute from a command prompt. In Windows, use tracert www. From a Unix prompt, type traceroute www. Like ping, you may also enter IP addresses instead of domain names. Traceroute will print out a list of all the routers, computers, and any other Internet entities that your packets must travel through to get to their destination.
If you use traceroute, you'll notice that your packets must travel through many things to get to their destination. Most have long names such as sjc2-core1-h These are Internet routers that decide where to send your packets.
Several routers are shown in Diagram 3, but only a few. Diagram 3 is meant to show a simple network structure. The Internet is much more complex. Internet Infrastructure The Internet backbone is made up of many large networks which interconnect with each other.
These networks peer with each other to exchange packet traffic. NAPs were the original Internet interconnect points. Below is a picture showing this hierarchical infrastructure. Diagram 4 This is not a true representation of an actual piece of the Internet. None of the physical network components are shown in Diagram 4 as they are in Diagram 3. This is because a single NSP's backbone infrastructure is a complex drawing by itself. Most NSPs publish maps of their network infrastructure on their web sites and can be found easily.
No, for a couple reasons. Improve this answer. Frank Thomas Frank Thomas Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown.
The Overflow Blog. Does ES6 make JavaScript frameworks obsolete? Podcast Do polyglots have an edge when it comes to mastering programming Featured on Meta. Now live: A fully responsive profile. Active 7 years, 10 months ago.
Viewed 4k times. Improve this question. You tagged this "tcp" as well as "ip". Are you talking about sending this hypothetical "1 KB" which just happens to be exactly 1, bytes via a TCP connection or as a raw IP payload? EvanAnderson: In both cases. It sounds similar. Add a comment. Active Oldest Votes. Improve this answer. ErikE ErikE 4, 1 1 gold badge 18 18 silver badges 24 24 bronze badges. By 'internet' in the question I meant the 'World Wide Web".
So both software and transmission can make a difference. NickW NickW I would just comment above but don't have the points for that yet.
0コメント