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Diferences of values between graphs of 2 differents manufacturers on same ethernet

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  • hemh
    Member
    • Apr 2020
    • 42

    #1

    Diferences of values between graphs of 2 differents manufacturers on same ethernet

    Hi,

    I came to compare 2 network traffic graphs from a checkpoint firewall firewall and an HPE fabric switch and I am quite confused by the values received fron them at the same time, check those 2 graphs on a 12h period of time:
    Click image for larger version

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  • markfree
    Senior Member
    • Apr 2019
    • 868

    #2
    I could not see the difference you said.
    Are these devices directly connected to each other? Is the firewall directly connected to the switch?
    If so, it seems like the traffic is flowing out of the "eth2-LAN" interface and into the Vlan Wan interface.

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    • hemh
      Member
      • Apr 2020
      • 42

      #3
      Click image for larger version

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ID:	479496Click image for larger version

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      10Mbs differnece on one way, 12Mbps on the other​

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      • markfree
        Senior Member
        • Apr 2019
        • 868

        #4
        It doesn't seem like much considering the amount of traffic you have.

        Similar to your scenario, the sample below may gives us the impression that the "br0" interface was sending a bit more data than what "eth0" was receiving.
        Click image for larger version  Name:	graph.png Views:	0 Size:	115.0 KB ID:	479528

        I believe this is not true because there is a small gap between the time data was collected from the tx interface and the time data was collected from the rx interface.
        We can verify this by looking at the value timestamps.
        Click image for larger version  Name:	br0_bits_sent.png Views:	0 Size:	3.0 KB ID:	479529Click image for larger version  Name:	eth0_bits_received.png Views:	0 Size:	3.3 KB ID:	479530

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        • hemh
          Member
          • Apr 2020
          • 42

          #5
          Thanks for your comment Markfree, it makes sense

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