Unidirectional UDP traffic using Trex

[hanama...@gmail.com]

Hi All,

Is there a way to send a unidirectional UDP traffic from client to server and measure the throughput using TREX ?

If yes , please let me know the way to configure it. 

[hanoh haim]

Hi, it is possible. You will need to read the manual for that 

Thanks

Hanoh

[hanama...@gmail.com]

Hi Hanoh ,

Thanks for quick reply.

I read the manual and was able to run the unidirectional UDP traffic.

My configurations is as below:

a) 2 Docker containers running on Ubuntu 18.04. Docker-A has IP 172.17.0.2/32 and Docker-B has 172.17.0.3/32.

 

b) Docker-A is acting like client and its /etc/trex-config.yaml

- port_limit    : 2

  version       : 2

  low_end       : true

  interfaces    : ["eth0", "eth0"]   # list of the interfaces to bind run ./dpdk_nic_bind.py --status

  port_info     :  # set eh mac addr

 

                 - ip         : 172.17.0.2

                   default_gw : 172.17.0.1

                 - ip         : 172.17.0.2

                   default_gw : 172.17.0.1

c) Docker-B is acting like Server and its /etc/trex_cfg.yaml

- port_limit    : 2

  version       : 2

  low_end       : true

  interfaces    : ["eth0", "veth1"]   # list of the interfaces to bind run ./dpdk_nic_bind.py --status

  port_info     :  # set eh mac addr

 

                 - ip         : 1.1.1.1

                   default_gw : 2.2.2.2

                 - ip         : 2.2.2.2

                   default_gw : 1.1.1.1

d) Then started the trex on client in interactive mode and ran "start  -f stl/udp_1pkt_simple.py  -m 10mbps -a –force".

     stl/udp_1pkt_simple.py file is modified to have SrcIP= 172.17.0.2 , DstIP=172.17.0.3

I could see that Docker-A/Client is sending the packets and Docker-B/Server is receiving the packets.

My intention of this test is to measure throughput , bandwidth of my docker network.

Couple of questions:

 1) In Stateless mode run (with above procedure) , is it possible to measure the latency/RTT for UDP traffic ?

 2) Want to measure the PPM drop. Is it possible with current mode of run ?

 3) From the results displayed on client side (attached below), i could see  drop-rate as 16.95 Mbps.

      If client and server are running in different docker instances , how could it figure out the drop-rate or drop packets ?