TRex realistic traffic generator
================================
:author: hhaim 
:email: <hhaim@cisco.com> 
:description: TRex Low cost, High scale, realistic traffic generator 
:revdate: 2014-11-01
:revnumber: 0.2
:deckjs_theme: swiss
:deckjs_transition: horizontal-slide
:scrollable:
:web_server_url: https://trex-tgn.cisco.com/trex


include::trex_ga.asciidoc[]


== What problem is being solved?

* Network elements include complex stateful features
* Require testing with stateful and real traffic mix
* Traffic generators of stateful/realistic traffic are:
** Expensive    ~$100-500K
** Not scalable for high rates 
** Not flexible 
* Due to cost, quality is impacted 
** Limited access / testing
** Late testing 
** No standard

++++++++++++++++++
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++++++++++++++++++


== What is TRex?


* TRex is a *statefull* *traffic* *generator* tool based on a smart replay of real flows (not a full TCP/IP stack,yet) 
++++++++++++++++++
<img src="images/ucs200_2.png" alt="title=" align="right" >
++++++++++++++++++
* Generates, manipulates and amplifies based on templates of a real/captured flows. 
* Templates are processed offline 
* *High* *performance* full line rate
** tx= up to 200Gb/sec rx=up to 200Gb/sec
* *Low* *cost* C220M UCS-1RU, Cisco internal eqip 
* Generate both sides of the traffic Clients and Servers
* *Standard* *hardware* (X86/Intel NIC I350,82599,XL710)
++++++++++++++++++
<img src="images/Intel520.png" alt="title=" align="right" >
++++++++++++++++++
* Flexible and Open Software (DPDK)
* Support Virtualization  
* Virtual interface support *E1000* , *VMXNET3*. Enabler for  
** Amazon AWS 
** Cisco LaaS 

== Realistic traffic model 

++++++++++++++++++
<img src="images/trex_model.png" alt="title=" align="center" >
++++++++++++++++++

== TRex high level software architecture 

++++++++++++++++++
<img src="images/trex_desing.png" alt="title=" align="right" >
++++++++++++++++++

* *DPDK* 
** user space driver
** Big TLB 
** Utilize all DDR banks

* *Multi-Threaded*
** Scale linearly  
** ~20Gb/sec per DP core

* *No TCP-IP*
** Fast events scheduler
** Generate flows template
** Can support 1K templates 

* *Slow-path flexibility (per-flow)*
** Client/server generation
** Measure latency 
** Measure flow order
** NAT translation learning 

== TRex basic flows generation algorithm 

++++++++++++++++++
<img src="images/trex_algo.png" alt="title=" align="center" >
++++++++++++++++++

== DNS simple profile example

* traffic profile is in YAML fomat 

[source,python]
----
$more cap2/dns_test.yaml 
- duration : 10.0
  generator :  
          distribution : "seq"           
          clients_start : "16.0.0.1"     
          clients_end   : "16.0.0.255"   
          servers_start : "48.0.0.1"     
          servers_end   : "48.0.0.255"   
          dual_port_mask : "1.0.0.0" 
          tcp_aging      : 1
          udp_aging      : 1
  cap_info : 
     - name: cap2/dns.pcap               <1>
       cps : 1.0                         <2>
----
<1> the pcap file that include DNS cap file that will be replicate 
<2> how many connection per second to generate, 1.0 means 1 connection per secod 

image:images/dns_wireshark.png[title="generator"]

== DNS simple profile output

.Formated results
[format="csv",cols="1^,2^,1^,1^,2^,1^,2^,1^", options="header"]
|=================
 pkt,time sec,fid,flow-pkt-id,client_ip,client_port,server_ip ,direction
  1  , 0.010000 , 1 , 1 , 16.0.0.1 , 1024 , 48.0.0.1 , ->
 2  , 0.020000 , 1 , 2 , 16.0.0.1 , 1024 , 48.0.0.1 , <-
 3  , 2.010000 , 2 , 1 , 16.0.0.2 , 1024 , 48.0.0.2 , ->
 4  , 2.020000 , 2 , 2 , 16.0.0.2 , 1024 , 48.0.0.2 , <-
 5  , 3.010000 , 3 , 1 , 16.0.0.3 , 1024 , 48.0.0.3 , ->
 6  , 3.020000 , 3 , 2 , 16.0.0.3 , 1024 , 48.0.0.3 , <-
 7  , 4.010000 , 4 , 1 , 16.0.0.4 , 1024 , 48.0.0.4 , ->
 8  , 4.020000 , 4 , 2 , 16.0.0.4 , 1024 , 48.0.0.4 , <-
 9  , 5.010000 , 5 , 1 , 16.0.0.5 , 1024 , 48.0.0.5 , ->
 10  , 5.020000 , 5 , 2 , 16.0.0.5 , 1024 , 48.0.0.5 , <-
 11  , 6.010000 , 6 , 1 , 16.0.0.6 , 1024 , 48.0.0.6 , ->
|=================

== DNS simple profile chart 


+++++++++++++++++++++++++++++++++
<div id="chart1"  style="font : 10px sans-serif"; ></div>

<script> 
var dns_data=[
[ 0.010000 , 1 , 0 , 1 ],
[ 0.060000 , 1 , 0 , 2 ],
[ 0.210000 , 2 , 0 , 1 ],
[ 0.260000 , 2 , 0 , 2 ],
[ 0.310000 , 3 , 0 , 1 ],
[ 0.360000 , 3 , 0 , 2 ],
[ 0.410000 , 4 , 0 , 1 ],
[ 0.460000 , 4 , 0 , 2 ],
[ 0.510000 , 5 , 0 , 1 ],
[ 0.560000 , 5 , 0 , 2 ],
[ 0.610000 , 6 , 0 , 1 ],
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[ 0.710000 , 7 , 0 , 1 ],
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[ 0.810000 , 8 , 0 , 1 ],
[ 0.860000 , 8 , 0 , 2 ],
[ 0.910000 , 9 , 0 , 1 ],
[ 0.960000 , 9 , 0 , 2 ],
[ 1.010000 , 10 , 0 , 1 ],
[ 1.060000 , 10 , 0 , 2 ],
];
chart("#chart1",dns_data,["dns"],"time-sec","flow-id");
</script>

+++++++++++++++++++++++++++++++++

== HTTP & DNS profile example

[source,python]
----
- duration : 1.0
  generator :  
          distribution : "seq"
          clients_start : "16.0.0.1"    
          clients_end   : "16.0.0.10"
          servers_start : "48.0.0.1"
          servers_end   : "48.0.0.3"
          dual_port_mask : "1.0.0.0" 
          tcp_aging      : 1
          udp_aging      : 1
  cap_ipg    : true        
  cap_info : 
     - name: cap2/dns.pcap
       cps : 10.0                        <1>
     - name: avl/delay_10_http_browsing_0.pcap
       cps : 2.0                         <1>
----
<1> Diffrent CPS  

* Inter packet Gap (IPG) is taken from pcap file 
* IPG can be manualy set  

== HTTP & DNS profile chart

+++++++++++++++++++++++++++++++++
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chart("#chart3",chart3_data,["dns","http"],"time-sec","flow-id");
</script>
+++++++++++++++++++++++++++++++++

== EMIX traffic profile 

++++++++++++++++++
<img src="images/trex_sfr_profile.png" alt="title=" align="right" >
++++++++++++++++++

* EMIX traffic profile suggested. used for NBAR/AVC tests
* Property 
** BW: 70% TCP (http, mail) , 30% UDP (rtp)
** Connections: 50% TCP (http, mail) , 50% UDP (rtp, dns) 
** Avg. Packet Size (~585B)
** PPS= 221K per 1Gb/sec
** CPS = 4K per 1Gb/sec
** Flows per 1Gb/sec = 50K
** Avg. Packets per flow (50)

== EMIX YAML profile 

.Simplified version of EMIX YAML profile
[source,python]
----
- duration : 0.1
  generator :  
          distribution : "seq"
          clients_start : "16.0.0.1"
          clients_end   : "16.0.1.255"
          servers_start : "48.0.0.1"
          servers_end   : "48.0.20.255"
          dual_port_mask : "1.0.0.0" 
  cap_ipg    : true
  cap_info : 
     - name: avl/delay_10_http_get_0.pcap
       cps : 404.52
     - name: avl/delay_10_http_post_0.pcap
       cps : 404.52
     - name: avl/delay_10_https_0.pcap
       cps : 130.8745
     - name: avl/delay_10_http_browsing_0.pcap
       cps : 709.89
     - name: avl/delay_10_exchange_0.pcap
       cps : 253.81
     - name: avl/delay_10_mail_pop_2.pcap
       cps : 4.759
     - name: avl/delay_10_oracle_0.pcap
       cps : 79.3178
     - name: avl/delay_10_rtp_160k_full.pcap
       cps : 2.776
     - name: avl/delay_10_smtp_0.pcap
       cps : 7.3369
     - name: avl/delay_10_sip_video_call_full.pcap
       cps : 29.347
     - name: avl/delay_10_citrix_0.pcap
       cps : 43.6248
     - name: avl/delay_10_dns_0.pcap
       cps : 1975.015
----

== EMIX profile chart

+++++++++++++++++++++++++++++++++
<div id="chart4"  style="font : 10px sans-serif"; ></div>

<script> 

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];

sfr_names=["http_get",
     "http_post",
     "https",
     "http_browsing",
     "exchange",
     "mail_pop",
     "mail_pop_1",
     "mail_pop_2",
     "oracle_0",
     "rtp_160k",
     "rtp_250k",
     "smtp_0",
     "smtp_1",
     "smtp_2",
     "video_call",
     "sip_video_call_full",
     "citrix_0",
     "dns_0"];

chart("#chart4",sfr_data,sfr_names,"time-sec","flow-id");
</script>
+++++++++++++++++++++++++++++++++

== TRex command line main options

[source,bash]
----
$.sudo /t-rex-64 -f [traffic_yaml] -m [muti]  -d [duration]  -l [Hz=1000] -c [cores]
----

*-f=TRAFFIC_CFG* ::
   Traffic YAML configuration file

*-m*::
 CPS multiplier  

*-d=DURATION* ::
   Duration of the test in sec
 
*-l=Hz* ::
  Latency pakets rate (Hz)  
  
*-c*::
 How many cores to use
  

== TRex Vision 

* All in One, most of the functionality of existing tools 
* Standard tests (e.g. traffic mix, automation) across features/platforms
* Cisco wide developers community
* Open source, Standardize tests

== Trex GUI 

image:images/TrexViewer.png[width=500]   

* Monitor GUI works on Windows 7
* Nonitor real-time properties of TRex ( e.g min/max/average latency,jitter ) 

== Python API and automation tools

++++++++++++++++++
<img src="images/trex_control_plane_modules.png" alt="title=" align="center" >

<div id="pclient" >

++++++++++++++++++

[source,python]
-----
import trex_client

    trex = trex_client.CTRexClient('csi-kiwi-02')
    ret = trex.start_trex( 
        m = 1.1,
        d = 20,
        f = 'avl/sfr_delay_10_1g.yaml',
        l = 1000)

    while trex.is_running() :
        trex.get_running_info()
        res=trex.get_result_obj()
        if res.is_done_warmup ():
          res.get_value_list("trex-global.data.m_tx_bps");
        time.sleep(1);

    ret = trex.stop_trex()
-----

++++++++++++++++++
</div>

<script>
    $("#pclient").css({'font-size':'12px'})
 </script>
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== Trex On your laptop

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<img src="images/T-Rex_vm.png" alt="title=" align="center" >
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* You can experience TRex on your laptop 

== Roadmap 

* TCP stack 
* Export SDK application plugins API - more application support
* Automation (e.g ATS, Cisco HLTAPI etc) 
* Open source 
* Tunnel agnostic (e.g. VXLAN,QinQ,MPLS,NSH)

==  Benefit 

** Significant budget saving 
** Product quality 

== Resource

.Resource 
[options="header",cols="1^",width="40%"]
|=================
| Link 
| link:trex_manual.html[Manual-html]  
| link:trex_book.pdf[Manual-pdf]  
| link:release_notes.html[Release Notes]  
| link:trex_manual.html#_download_and_installation[How to install]  
|=================


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</section>
<section class="slide">
<h2></h2>
<h7>Backup</h7>
<h8></h8>
</section>
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