Traffic Generators

opensource solutions, scapy will probably be able

to do the job.
> IMIX and other standard load tests.I’m using IPERF now, but this is
> simply a load gen.  No IMIX etc Suggestions ?A little script with bwping (TOS, MTU) is not enough to try to make a ~~pseudo~~ RFC2544 test ?
Sorry if it is not what you are searching for.

So I have started playing with this, I think it should do we you want (I have the same requirement);http://traffic.comics.unina.it/software/ITG/

> When it comes to minimum size packets, I’m not aware of open source
> software that can congest 1GE port. Operating systems are not really
> tuned to do 1Gbps UDP streams on small packets. You can achieve that,
> even more, but you need to go quite low level, UDP socket you must
> forget immediately event with sendmmsg/recvmmsg. Raw sockets and
> modern CPU and you’ll probably be able to reach 1Gbps per core, but I
> don’t know software available that would be productized even to iperf level here, would love to hear about one.

Some open source software I am writing can do 1Gbps (and likely beyond, I don’t have any 10G NICs to test on, yet!), although it’s for testing at the Ethernet layer so not really applicable here;

https://github.com/jwbensley/Etherate

One of the main features I am working on now (as I’m still writing the initial version) is loading the frame payload from file so that payload data *could* be UDP but it’s not really ment for testing higher than Ethernet and/or MPLS level.

Cheers,
James.

>
> When it comes to minimum size packets, I’m not aware of open source
> software that can congest 1GE port. Operating systems are not really
> tuned to do 1Gbps UDP streams on small packets. You can achieve that,
> even more, but you need to go quite low level, UDP socket you must
> forget immediately event with sendmmsg/recvmmsg. Raw sockets and
> modern CPU and you’ll probably be able to reach 1Gbps per core, but I
> don’t know software available that would be productized even to iperf level here, would love to hear about one. 

Scapy [1] should be able to do that easily, so should mausezahn [2]. Of course you don’t open use regular TCP/UDP socket API for this, but some raw form of it and generate the whole packet in userspace.[1] http://www.secdev.org/projects/scapy/
[2] http://www.perihel.at/sec/mz/

Netwerk (C-NSP)