Mailing List Archive

> On 16 Feb 2016, at 07:44, Chandrika Gautam <chandrika.iitd.rock@gmail.com> wrote:
>
> Hi,
>
> We have collected terabytes of data in multiple pcap files using tcpdump utility. We want to replay it at the consistent transmit rate of ~4-10 Gbps.
> Is it possible with disk2n utility?

Yes, you can specify a playlist of pcap files to replay using the [--multiple-pcap-files|-m] <text file path> option, example:

disk2n -i zc:eth1 -m playlist.txt -c 1 -w 2 -S 3 -g -b 2048 -C 4096

If the original capture rate is not the rate you want, you can change it by using the [--inter-packet-time|-I] <nsec> option

> At ntop site, prdouct description says "disk2n exploit the packet transmission acceleration offered by PF_RING DNA". Will it be working with ZC also
> because we have taken a license of PF_RINGZC last year?

Yes it does work with ZC.

> I am not able to find out the test binary for disk2n for PFRING version 6.2.0. Please help to get one for RHEL 6.5.
> Latest rpm taken from the link "http://packages.ntop.org/ <http://packages.ntop.org/>" is for PFRing version 6.3.0.

You should install n2disk from the stable repository at http://packages.ntop.org/centos-stable/

> Can you help how to test on a particular interface with disn2n utility.

Please refer to the n2disk user’s guide http://www.ntop.org/wp-content/uploads/2011/08/n2disk-UsersGuide1.pdf
Appendix A - Configuring a PF_RING Deb/RPM package

Alfredo

>
>
> Regards,
> Chandrika
> _______________________________________________
> Ntop-misc mailing list
> Ntop-misc@listgateway.unipi.it
> http://listgateway.unipi.it/mailman/listinfo/ntop-misc

Hi Alfredo/Ntop team,

I have been successfully able to pump the data at ~4-5Gbps using below
command -
/usr/local/bin/disk2n -m */home/list_of_pcap.txt* -i zc:eth4 *-I 1050* -O
-g -C 64 -b 2048 -c 1 -w 2 -S 3 -v

I have 1 TB of data present in multiple pcap files , size ranging from 3-12
GB and name of pcaps are given in
*/home/list_of_pcap.txt. *After executing 2 files of 4-5GB, it starts
giving the below errors continuously and pumping traffic intermittently.

09/Mar/2016 00:53:27 [disk2n.c:1594] WARNING: [sender] waiting.. (buffer
empty)
09/Mar/2016 00:53:27 [disk2n.c:1594] WARNING: [sender] waiting.. (buffer
empty)
09/Mar/2016 00:53:27 [disk2n.c:1594] WARNING: [sender] waiting.. (buffer
empty)

Can you please help what am I missing here and please let me know if we
need to check something on server.
I have 12 GB RAM on rhel server.

Regards,

On Tue, Feb 16, 2016 at 2:07 PM, Alfredo Cardigliano <cardigliano@ntop.org>
wrote:

>
> On 16 Feb 2016, at 07:44, Chandrika Gautam <chandrika.iitd.rock@gmail.com>
> wrote:
>
> Hi,
>
> We have collected terabytes of data in multiple pcap files using tcpdump
> utility. We want to replay it at the consistent transmit rate of ~4-10
> Gbps.
> Is it possible with disk2n utility?
>
>
> Yes, you can specify a playlist of pcap files to replay using the
> [--multiple-pcap-files|-m] <text file path> option, example:
>
> disk2n -i zc:eth1 -m playlist.txt -c 1 -w 2 -S 3 -g -b 2048 -C 4096
>
> If the original capture rate is not the rate you want, you can change it
> by using the [--inter-packet-time|-I] <nsec> option
>
> At ntop site, prdouct description says "disk2n exploit the packet
> transmission acceleration offered by PF_RING DNA". Will it be working with
> ZC also
> because we have taken a license of PF_RINGZC last year?
>
>
> Yes it does work with ZC.
>
> I am not able to find out the test binary for disk2n for PFRING version
> 6.2.0. Please help to get one for RHEL 6.5.
> Latest rpm taken from the link "http://packages.ntop.org/" is for PFRing
> version 6.3.0.
>
>
> You should install n2disk from the stable repository at
> http://packages.ntop.org/centos-stable/
>
> Can you help how to test on a particular interface with disn2n utility.
>
>
> Please refer to the n2disk user’s guide
> http://www.ntop.org/wp-content/uploads/2011/08/n2disk-UsersGuide1.pdf
> Appendix A - Configuring a PF_RING Deb/RPM package
>
> Alfredo
>
>
>
> Regards,
> Chandrika
> _______________________________________________
> Ntop-misc mailing list
> Ntop-misc@listgateway.unipi.it
> http://listgateway.unipi.it/mailman/listinfo/ntop-misc
>
>
>
> _______________________________________________
> Ntop-misc mailing list
> Ntop-misc@listgateway.unipi.it
> http://listgateway.unipi.it/mailman/listinfo/ntop-misc
>

Hi Chandrika
it seems your storage is not fast enough in reading the pcap files to keep up with the transmission rate.

Alfredo

> On 17 Mar 2016, at 05:57, Chandrika Gautam <chandrika.iitd.rock@gmail.com> wrote:
>
> Hi Alfredo/Ntop team,
>
> I have been successfully able to pump the data at ~4-5Gbps using below command -
> /usr/local/bin/disk2n -m /home/list_of_pcap.txt -i zc:eth4 -I 1050 -O -g -C 64 -b 2048 -c 1 -w 2 -S 3 -v
>
> I have 1 TB of data present in multiple pcap files , size ranging from 3-12 GB and name of pcaps are given in
> /home/list_of_pcap.txt. After executing 2 files of 4-5GB, it starts giving the below errors continuously and pumping traffic intermittently.
>
> 09/Mar/2016 00:53:27 [disk2n.c:1594] WARNING: [sender] waiting.. (buffer empty)
> 09/Mar/2016 00:53:27 [disk2n.c:1594] WARNING: [sender] waiting.. (buffer empty)
> 09/Mar/2016 00:53:27 [disk2n.c:1594] WARNING: [sender] waiting.. (buffer empty)
>
> Can you please help what am I missing here and please let me know if we need to check something on server.
> I have 12 GB RAM on rhel server.
>
> Regards,
>
> On Tue, Feb 16, 2016 at 2:07 PM, Alfredo Cardigliano <cardigliano@ntop.org <mailto:cardigliano@ntop.org>> wrote:
>
>> On 16 Feb 2016, at 07:44, Chandrika Gautam <chandrika.iitd.rock@gmail.com <mailto:chandrika.iitd.rock@gmail.com>> wrote:
>>
>> Hi,
>>
>> We have collected terabytes of data in multiple pcap files using tcpdump utility. We want to replay it at the consistent transmit rate of ~4-10 Gbps.
>> Is it possible with disk2n utility?
>
> Yes, you can specify a playlist of pcap files to replay using the [--multiple-pcap-files|-m] <text file path> option, example:
>
> disk2n -i zc:eth1 -m playlist.txt -c 1 -w 2 -S 3 -g -b 2048 -C 4096
>
> If the original capture rate is not the rate you want, you can change it by using the [--inter-packet-time|-I] <nsec> option
>
>> At ntop site, prdouct description says "disk2n exploit the packet transmission acceleration offered by PF_RING DNA". Will it be working with ZC also
>> because we have taken a license of PF_RINGZC last year?
>
> Yes it does work with ZC.
>
>> I am not able to find out the test binary for disk2n for PFRING version 6.2.0. Please help to get one for RHEL 6.5.
>> Latest rpm taken from the link "http://packages.ntop.org/ <http://packages.ntop.org/>" is for PFRing version 6.3.0.
>
> You should install n2disk from the stable repository at http://packages.ntop.org/centos-stable/ <http://packages.ntop.org/centos-stable/>
>> Can you help how to test on a particular interface with disn2n utility.
>
> Please refer to the n2disk user’s guide http://www.ntop.org/wp-content/uploads/2011/08/n2disk-UsersGuide1.pdf <http://www.ntop.org/wp-content/uploads/2011/08/n2disk-UsersGuide1.pdf>
> Appendix A - Configuring a PF_RING Deb/RPM package
>
> Alfredo
>
>>
>>
>> Regards,
>> Chandrika
>> _______________________________________________
>> Ntop-misc mailing list
>> Ntop-misc@listgateway.unipi.it <mailto:Ntop-misc@listgateway.unipi.it>
>> http://listgateway.unipi.it/mailman/listinfo/ntop-misc <http://listgateway.unipi.it/mailman/listinfo/ntop-misc>
>
> _______________________________________________
> Ntop-misc mailing list
> Ntop-misc@listgateway.unipi.it <mailto:Ntop-misc@listgateway.unipi.it>
> http://listgateway.unipi.it/mailman/listinfo/ntop-misc <http://listgateway.unipi.it/mailman/listinfo/ntop-misc>
>
> _______________________________________________
> Ntop-misc mailing list
> Ntop-misc@listgateway.unipi.it
> http://listgateway.unipi.it/mailman/listinfo/ntop-misc