Can we generate the traffic from external pcap file in TREX traffic generator

[akanksha...@gmail.com]

As we can see /trex-core/scripts/cap2 contains .yaml file and .pcap files, like we can run sudo ./t-rex-64 -f cap2/dns.yaml -m 10 -d 10 ..... This dns.yaml file contains dns.pcap(which generates the traffic from trex server) in cap_info which generates traffic.
So if I am having some 5GB pcap file, will I be able to generate the traffic from any command or I have to create some .yaml for this(this pcap is generated from our sources)

[Yaroslav Brustinov]

Hi,

If it's OK to send the pcap via single interface, you could use stateless mode:

1. Run server: sudo ./t-rex-64 -i

2. Run console in another shell: ./trex-console

3. Use push -r command at console (make sure path is available at server): push -r --port 0 -f <path to pcap>

Thanks,

Yaroslav.

On Mon, Feb 11, 2019 at 7:50 PM <akanksha...@gmail.com> wrote:

As we can see /trex-core/scripts/cap2 contains .yaml file and .pcap files, like we can run sudo ./t-rex-64 -f cap2/dns.yaml -m 10 -d 10 ..... This dns.yaml file contains dns.pcap(which generates the traffic from trex server) in cap_info which generates traffic.
So if I am having some 5GB pcap file, will I be able to generate the traffic from any command or I have to create some .yaml for this(this pcap is generated from our sources)

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[akanksha...@gmail.com]

Thanks a lot. It worked for me.

[er.sune...@gmail.com]

Thank you Yaoslav. I also had the same question, now resolved by the following steps.

One additional question I have,  this 'push -r --port 0 -f <path to pcap>' replays each packet using the same timestamp what mentioned in PCAP ?

On Tuesday, February 12, 2019 at 8:43:47 AM UTC-2, Yaroslav Brustinov wrote:

Hi,

If it's OK to send the pcap via single interface, you could use stateless mode:

1. Run server: sudo ./t-rex-64 -i

2. Run console in another shell: ./trex-console

3. Use push -r command at console (make sure path is available at server): push -r --port 0 -f <path to pcap>

Thanks,

Yaroslav.

On Mon, Feb 11, 2019 at 7:50 PM <akanksha...@gmail.com> wrote:

As we can see /trex-core/scripts/cap2 contains .yaml file and .pcap files, like we can run sudo ./t-rex-64 -f cap2/dns.yaml -m 10 -d 10 ..... This dns.yaml file contains dns.pcap(which generates the traffic from trex server) in cap_info which generates traffic.
So if I am having some 5GB pcap file, will I be able to generate the traffic from any command or I have to create some .yaml for this(this pcap is generated from our sources)

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[Yaroslav Brustinov]

> One additional question I have,  this 'push -r --port 0 -f <path to pcap>' replays each packet using the same timestamp what mentioned in PCAP ?

It uses timestamps in pcap and has inaccuracy of IO - reading from file.

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[Maxim Ciornii]

Hi, 

using push, is it possible to change src and dst IP addresses?

thanks.