Thanks for the explanation Alexander. I have no business being in this business (i am really a television broadcast engineer) but nobody else will do it out here. :)
On Sun, Aug 7, 2016 at 12:48 AM, Alexander Neilson <[email protected] > wrote: > Hi James > > Both packet counts and Mbps counts are important as they both consume > resources (packets need to each be processed by the router, and a link has > only a limited number of Mbps data can consume). > > Remember that every packet can be as short as 64 Bytes or much much larger > (usually up to 1518 Bytes but could be even larger) > > In theory for every packet being sent there should be an acknowledgement > (ACK, for TCP and some other protocols) or potentially a reply. For ACK > packets these are usually minimum length packets and depending on the > details of what was being communicated then a reply may be minimum sized, > the same as the original packet, or very much bigger (even fragmented). > Acknowledgements can also be "selective" in the sense that not every packet > gets its own ACK to reduce packet count on the wire. > > Different types of communication also attract packets of different sizes > and with different types of responses. For example an RTP stream for a > phone call using 711A/U codec's will often present approximately 50 Packets > per second of approx 200 Bytes in length and overall uses approximately > 80Kbps on the link. > > 1500B packets obviously pass a lot of traffic with a small packet count, > 64B packets need a much larger number of packets to pass the same amount of > traffic. Your screenshot looks to me (talking about the current flow) that > you probably have a good speed TCP connection on the line with replies > using selective acknowledgement explaining some of the reduced packet count > in one direction. > > Apologies if this didn't answer the question you really had, if you expand > in more detail what you want to know I am sure myself and / or others would > be able to help out. > > Regards > Alexander > > _______________________________________________ > Mikrotik-users mailing list > [email protected] > http://lists.wispa.org/mailman/listinfo/mikrotik-users > >
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