ES-16-XG iperf3 RETR

Discussion in 'Networking' started by trumee, Sep 2, 2019.

  1. trumee

    trumee Member

    Joined:
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    Hello,
    I have two hosts connected to ES-16-XG. An iperf3 from host A to B shows a speed of 9.39Gbps with 0 RETR, however on the reverse i get big values.
    Here is an example,

    Host A to B
    Code:
    $ iperf3 -c 172.16.1.28
    Connecting to host 172.16.1.28, port 5201
    [  5] local 172.16.1.5 port 52932 connected to 172.16.1.28 port 5201
    [ ID] Interval           Transfer     Bitrate         Retr  Cwnd
    [  5]   0.00-1.00   sec  1.10 GBytes  9.41 Gbits/sec    0   3.08 MBytes      
    [  5]   1.00-2.00   sec  1.09 GBytes  9.40 Gbits/sec    0   3.08 MBytes      
    [  5]   2.00-3.00   sec  1.09 GBytes  9.38 Gbits/sec    0   3.08 MBytes      
    [  5]   3.00-4.00   sec  1.09 GBytes  9.40 Gbits/sec    0   3.08 MBytes      
    [  5]   4.00-5.00   sec  1.09 GBytes  9.38 Gbits/sec    0   3.08 MBytes      
    [  5]   5.00-6.00   sec  1.09 GBytes  9.39 Gbits/sec    0   3.08 MBytes      
    [  5]   6.00-7.00   sec  1.09 GBytes  9.39 Gbits/sec    0   3.08 MBytes      
    [  5]   7.00-8.00   sec  1.09 GBytes  9.39 Gbits/sec    0   3.08 MBytes      
    [  5]   8.00-9.00   sec  1.09 GBytes  9.39 Gbits/sec    0   3.08 MBytes      
    [  5]   9.00-10.00  sec  1.09 GBytes  9.40 Gbits/sec    0   3.08 MBytes      
    - - - - - - - - - - - - - - - - - - - - - - - - -
    [ ID] Interval           Transfer     Bitrate         Retr
    [  5]   0.00-10.00  sec  10.9 GBytes  9.39 Gbits/sec    0             sender
    [  5]   0.00-10.00  sec  10.9 GBytes  9.39 Gbits/sec                  receiver
    
    iperf Done.
    
    Host B to A
    Code:
    # iperf3 -c 172.16.1.5
    Connecting to host 172.16.1.5, port 5201
    [  5] local 172.16.1.28 port 46466 connected to 172.16.1.5 port 5201
    [ ID] Interval           Transfer     Bitrate         Retr  Cwnd
    [  5]   0.00-1.00   sec  1.10 GBytes  9.41 Gbits/sec  504    311 KBytes      
    [  5]   1.00-2.00   sec  1.09 GBytes  9.35 Gbits/sec  1013    615 KBytes      
    [  5]   2.00-3.00   sec  1.09 GBytes  9.36 Gbits/sec  1137    427 KBytes      
    [  5]   3.00-4.00   sec  1.09 GBytes  9.38 Gbits/sec  378    447 KBytes      
    [  5]   4.00-5.00   sec  1.09 GBytes  9.39 Gbits/sec  441    462 KBytes      
    [  5]   5.00-6.00   sec  1.09 GBytes  9.39 Gbits/sec  378    607 KBytes      
    [  5]   6.00-7.00   sec  1.09 GBytes  9.38 Gbits/sec  252    614 KBytes      
    [  5]   7.00-8.00   sec  1.09 GBytes  9.38 Gbits/sec  504    542 KBytes      
    [  5]   8.00-9.00   sec  1.09 GBytes  9.39 Gbits/sec  567    532 KBytes      
    [  5]   9.00-10.00  sec  1.09 GBytes  9.39 Gbits/sec  378    600 KBytes      
    - - - - - - - - - - - - - - - - - - - - - - - - -
    [ ID] Interval           Transfer     Bitrate         Retr
    [  5]   0.00-10.00  sec  10.9 GBytes  9.38 Gbits/sec  5552             sender
    [  5]   0.00-10.04  sec  10.9 GBytes  9.35 Gbits/sec                  receiver
    
    iperf Done.
    
    Any idea why i get massive RETR above?
     
    #1
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