Hi,
The bandwidth of that situation is provided by Mininet (Probably,
implementation is Linux TC). IOW, there is no direct relation between Ryu
and its bandwidth. But the point that simple_switch_13 is 'Reactive' type
may have a hint.
2014-12-04 10:58 GMT+09:00 lbo.xidian <[email protected]>:
> Hi,
> When I use iperf to measure the bandwidth between two end hosts in
> Mininet with Ryu, the bandwidth is lower than link capacity as defined in
> Mininet seriously. The related information about my experiment is shown in
> below:
> topology in Mininet: *sudo mn --controller remote --switch
> ovs,protocols=OpenFlow13 --link tc,bw=10 --topo tree,depth=3 --mac*
> ryu: *simple_switch_13*
> the test results are:
> /**********************
> mininet> iperf h1 h8
> *** Iperf: testing TCP bandwidth between h1 and h8
> *** Results: ['2.60 Mbits/sec', '2.93 Mbits/sec']
> mininet> iperf h1 h8
> *** Iperf: testing TCP bandwidth between h1 and h8
> *** Results: ['2.55 Mbits/sec', '2.87 Mbits/sec']
> **************************/
> The end-to-end bandwidth measured is only 2.93Mbits, which is lower than
> 10Mbits/sec seriously.
> When I use a single switch topo: *sudo mn --controller remote --switch
> ovs,protocols=OpenFlow13 --link tc,bw=10 --mac*
> the results are:
> /************************
> *** Iperf: testing TCP bandwidth between h1 and h2
> *** Results: ['9.78 Mbits/sec', '10.4 Mbits/sec']
> **********************/
> I don't know why the bandwidth is so small than defined
> Any help is much appreciated.
> Thanks!
>
>
>
>
>
>
>
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>
--
Satoshi KOBAYASHI <[email protected]>
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