TRex Advance stateful mode Example

16 8 月, 2021,由 frank撰写

在之前的文章中，介绍过Trex Stateless Mode的简单使用方法，在这里介绍下ASTF模式是如何工作的，并且如何统计信息的；另外在这个例子中，主要是通过变更PCAP报文中的原和目的地址，并以Server/Client方式发送流量并统计；

Topology

Trex-Server1 (100.0.0.1)------ (100.0.0.2)Router1 ---- network ----- Router2(100.1.1.2) ------ (100.1.1.1)Trex-Server2

Trex-Server1 Config

Trex 配置文件

[root@trex-161 v2.87]# more /etc/trex_cfg.yaml 
     - port_limit    : 2
       version       : 2
       interfaces    : ["00:04.0", "dummy"]
 
       port_info       :
            - default_gw : 100.0.0.2
              ip         : 100.0.0.1
            - default_gw : 100.1.1.2
              ip         : 100.1.1.1

python文件

[root@trex-161 v2.87]# more astf/http_simple_port_tunable.py
from trex.astf.api import *


class Prof1():
    def __init__(self):
        pass

    def create_profile(self,port):
        # ip generator
        ip_gen_c = ASTFIPGenDist(ip_range=["1.0.0.0", "1.0.0.255"], distribution="seq")
        ip_gen_s = ASTFIPGenDist(ip_range=["211.0.0.0", "211.0.0.255"], distribution="seq")
        ip_gen = ASTFIPGen(glob=ASTFIPGenGlobal(ip_offset="1.0.0.0"),
                           dist_client=ip_gen_c,
                           dist_server=ip_gen_s)

        return ASTFProfile(default_ip_gen=ip_gen,
                            cap_list=[ASTFCapInfo(file="../avl/delay_10_http_browsing_0.pcap",
                            cps=2.776,
                            port=port)])

    def get_profile(self, **kwargs):
        port= kwargs.get('port',80)
        return self.create_profile(port)

def register():
    return Prof1()

Trex-Server2 Config

Trex 配置文件

[root@trex-162 v2.87]# more /etc/trex_cfg.yaml 
     - port_limit    : 2
       version       : 2
       interfaces    : ["00:04.0", "dummy"]
 
       port_info       :
            - default_gw : 100.0.0.2
              ip         : 100.0.0.1
            - default_gw : 100.1.1.2
              ip         : 100.1.1.1

python文件

[root@trex-162 v2.87]# more astf/http_simple_port_tunable.py
from trex.astf.api import *


class Prof1():
    def __init__(self):
        pass

    def create_profile(self,port):
        # ip generator
        ip_gen_c = ASTFIPGenDist(ip_range=["211.0.0.0", "211.0.0.255"], distribution="seq")
        ip_gen_s = ASTFIPGenDist(ip_range=["1.0.0.0", "1.0.0.255"], distribution="seq")
        ip_gen = ASTFIPGen(glob=ASTFIPGenGlobal(ip_offset="1.0.0.0"),
                           dist_client=ip_gen_c,
                           dist_server=ip_gen_s)

        return ASTFProfile(default_ip_gen=ip_gen,
                            cap_list=[ASTFCapInfo(file="../avl/delay_10_http_browsing_0.pcap",
                            cps=2.776,
                            port=port)])

    def get_profile(self, **kwargs):
        port= kwargs.get('port',80)
        return self.create_profile(port)

def register():
    return Prof1()

在Server/Client上启动Trex

[root@trex-161 v2.87]# ./t-rex-64 -i --astf

[root@trex-162 v2.87]# ./t-rex-64 -i --astf

在Server/Client上开启双向流量

进入Trex Console中，可以在这里控制打流，停流，更新流，以及查看报文收发信息等；注意需要先在Server测start 流量，此时流量不会立即发送，直到在Client测start流量后，两边才开始发送流量并统计，但反过来则会立即发送单向流量，所以这点需要注意；

[root@trex-161 v2.87]# ./trex-console 

Using 'python' as Python interpeter


Connecting to RPC server on localhost:4501                   [SUCCESS]


Connecting to publisher server on localhost:4500             [SUCCESS]


Acquiring ports [0]:                                         [SUCCESS]


Server Info:

Server version:   v2.87 @ ASTF
Server mode:      Advanced Stateful
Server CPU:       1 x QEMU Virtual CPU version 2.5+
Ports count:      1 x 10Gbps @ Virtio network device

-=TRex Console v3.0=-

Type 'help' or '?' for supported actions

trex>ping -p 0 -d 100.0.0.2

Pinging 100.0.0.2 from port 0 with 64 bytes of data:         
Reply from 100.0.0.2: bytes=64, time=52.90ms, TTL=255
Reply from 100.0.0.2: bytes=64, time=3.88ms, TTL=255
Reply from 100.0.0.2: bytes=64, time=4.65ms, TTL=255
Reply from 100.0.0.2: bytes=64, time=4.40ms, TTL=255
Reply from 100.0.0.2: bytes=64, time=2.97ms, TTL=255
trex>
trex>start -h
usage: start [-h] -f FILE [-m MULT] [-d TIME] [-t T1=VAL[,T2=VAL ...]] [--nc]
             [-l LATENCY_PPS] [--ipv6] [--clients CLIENTS [CLIENTS ...] |
             --servers-only] [--pid PROFILE]

Start traffic command

optional arguments:
  -h, --help            show this help message and exit
  -f FILE               File path to use
  -m MULT               Sent traffic numeric multiplier
  -d TIME               Set duration time for job.
  -t T1=VAL[,T2=VAL ...]
                        Sets tunables for a profile. Example: '-t
                        fsize=100,pg_id=7'
  --nc                  Faster flow termination at the end of the test, see
                        --nc in the manual
  -l LATENCY_PPS        start latency streams
  --ipv6                Convert traffic to IPv6
  --clients CLIENTS [CLIENTS ...]
                        Only those client interfaces will send traffic.
  --servers-only        All client interfaces will be disabled.
  --pid PROFILE         A list of profiles on which to apply the command.
                        Default profile id is "_" when not specified.

trex>
trex>start -f astf/http_simple_port_tunable.py -m 1000 -d 1000 --servers-only

Loading traffic at acquired ports.                           [SUCCESS]


Starting traffic.                                            [SUCCESS]

31.82 [ms]

[root@trex-162 v2.87]# ./trex-console 

Using 'python' as Python interpeter


Connecting to RPC server on localhost:4501                   [SUCCESS]


Connecting to publisher server on localhost:4500             [SUCCESS]


Acquiring ports [0]:                                         [SUCCESS]

*** Warning - Port 0 destination is unresolved ***

Server Info:

Server version:   v2.87 @ ASTF
Server mode:      Advanced Stateful
Server CPU:       1 x QEMU Virtual CPU version 2.5+
Ports count:      1 x 10Gbps @ Virtio network device

-=TRex Console v3.0=-

Type 'help' or '?' for supported actions

trex>
trex>start -f astf/http_simple_port_tunable.py -m 1000 -d 1000 --clients 0

Loading traffic at acquired ports.                           [SUCCESS]


Starting traffic.                                            [SUCCESS]

43.10 [ms]

在Console中通过“TUI”查看流量

下面是Server测输出，主要以Server信息为主，在这个界面下，按“ESC”可以调出控制版面，并根据需求选择输出信息；在不退出TUI的情况下，也可以对流量进行控制，并实时观察流量的变化；

Global Statistitcs

connection   : localhost, Port 4501                       total_tx_L2  : 85.09 Kbps                     
version      : ASTF @ v2.87                               total_tx_L1  : 114.43 Kbps                    
cpu_util.    : 0.49% @ 1 cores (1 per dual port)          total_rx     : 114.55 Kbps                    
rx_cpu_util. : 0.0% / 0 pps                               total_pps    : 183.38 pps                     
async_util.  : 0.07% / 9.95 Kbps                          drop_rate    : 0 bps                          
total_cps.   : 0 cps                                      queue_full   : 0 pkts                         

Port Statistics

   port    |         0         
-----------+------------------
owner      |              root 
link       |                UP 
state      |      TRANSMITTING 
speed      |           10 Gb/s 
CPU util.  |             0.49% 
--         |                   
Tx bps L2  |        85.09 Kbps 
Tx bps L1  |       114.43 Kbps 
Tx pps     |        183.38 pps 
Line Util. |               0 % 
---        |                   
Rx bps     |       114.55 Kbps 
Rx pps     |        183.51 pps 
----       |                   
opackets   |             16646 
ipackets   |             16662 
obytes     |            965518 
ibytes     |           1300162 
tx-pkts    |       16.65 Kpkts 
rx-pkts    |       16.66 Kpkts 
tx-bytes   |         965.52 KB 
rx-bytes   |            1.3 MB 
-----      |                   
oerrors    |                 0 
ierrors    |                 0 

status:  /

browse:     'ESC' - console, 'q' - quit, 'd' - dashboard, 'u' - util, 't' - astf, 'l' - latency, 
dashboard:  'n' - reset view, 'o' - owned ports, 'a' - all ports, 'c' - clear,

下面是按了“ESC”后输出的信息

status:  -

browse:     'ESC' - console, 'q' - quit, 'd' - dashboard, 'u' - util, 't' - astf, 'l' - latency, 
dashboard:  'n' - reset view, 'o' - owned ports, 'a' - all ports, 'c' - clear,

下面是Client测，注意里面的drop需要被忽略掉，主要是因为在Server/Client模式使用了双向流量，详细可以看这个帖子；

Global Statistitcs

connection   : localhost, Port 4501                       total_tx_L2  : 6.94 Mbps                      
version      : ASTF @ v2.87                               total_tx_L1  : 8.72 Mbps                      
cpu_util.    : 3.6% @ 1 cores (1 per dual port)           total_rx     : 364.75 bps                     
rx_cpu_util. : 0.0% / 0 pps                               total_pps    : 11.12 Kpps                     
async_util.  : 0.08% / 10.02 Kbps                         drop_rate    : 6.94 Mbps                      
total_cps.   : 2.78 Kcps                                  queue_full   : 0 pkts                         

Port Statistics

   port    |         0         
-----------+------------------
owner      |              root 
link       |                UP 
state      |      TRANSMITTING 
speed      |           10 Gb/s 
CPU util.  |              3.6% 
--         |                   
Tx bps L2  |         6.94 Mbps 
Tx bps L1  |         8.72 Mbps 
Tx pps     |        11.12 Kpps 
Line Util. |            0.09 % 
---        |                   
Rx bps     |        364.75 bps 
Rx pps     |          0.99 pps 
----       |                   
opackets   |           1390674 
ipackets   |               127 
obytes     |         108472572 
ibytes     |              5842 
tx-pkts    |        1.39 Mpkts 
rx-pkts    |          127 pkts 
tx-bytes   |         108.47 MB 
rx-bytes   |           5.84 KB 
-----      |                   
oerrors    |                 0 
ierrors    |                 0 

status:  -

Press 'ESC' for navigation panel...
status:

验证报文信息

原始PCAP报文

“delay_10_http_browsing_0.pcap”这个报文可以在Trex的“avl”目录中找到，如下是报文截图：

下面是通过trex打出来的报文截图，报文是在Router1面向Trex Server的端口抓的：

astf-02-cap.pcapng 下载

本文出自 Frank's Blog

本文链接：TRex Advance stateful mode Example
版权声明：本文为原创文章，仅代表个人观点，版权归 Frank Zhao 所有，转载时请注明本文出处及文章链接

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2 Responses to “TRex Advance stateful mode Example”

jim说道：

29 3 月, 2024 02:53

Hi Frank. 能請教你關於trex的問題嗎，我的公司想利用此軟體測試低階switch的throughput ，遇到了一個小問題是switch的interface是5port 我利用虛擬port去滿足偶數時，他會有drop rate是正常的嗎
frank说道：

3 4 月, 2024 09:19

正常5个port直接蛇形，只需连2个port就可以把流量打起来了，你说的虚拟port满足偶数是什么意思？此时哪端有drop？多大流量时有drop？

留言哦

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其他操作

TRex Advance stateful mode Example

Topology

Trex-Server1 Config

Trex-Server2 Config

在Server/Client上启动Trex

在Server/Client上开启双向流量

在Console中通过“TUI”查看流量

验证报文信息

原始PCAP报文

2 Responses to “TRex Advance stateful mode Example”

留言哦

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近期文章

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