ating 100Gbit transfer rate

Kevin Oberman kob6558 at
Thu Jul 12 16:04:59 UTC 2012

On Wed, Jul 11, 2012 at 9:45 PM, Sami Halabi <sodynet1 at> wrote:
> Hi,
> Thank your for your response.
> i have 2 questions:
> 1. can you explain the looping method that allowed you to reach 100GB ?
> 2. Alcatel-Lucent is routers are given for research internationally ? or
> its locally? what routers we are talking about here and what link do they
> have? i appreciatre if you explain more how do these routers saturate 100GB.

Sure. You create an LSP with a vrf (routing-instance in Juniper-ese)
to place the traffic onto it. The LSP is manually configured at each
hop to traverse to the far end router and that one then points back at
the input router where it is again reversed back towards the
destination. Loop as often as required to saturate the link. (I was
tempted to just say "rinse and repeat, but that might not be clear to
those not in the U.S.)

For information on ANI (and I am not sure if new proposals are being
accepted), see:

> On Thu, Jul 12, 2012 at 6:43 AM, Kevin Oberman <kob6558 at> wrote:
>> On Wed, Jul 11, 2012 at 1:31 PM, Sami Halabi <sodynet1 at> wrote:
>> > Hi,
>> >
>> > We have several boxes using 10G cards and using most of the bandwidth.
>> > as a future vision i would like to ask if someone ever combined hardware
>> > with freebsd/linux to saturate 100Gbit of traffic.
>> > what hardware (server, NICs, platform) and  software do you recommend
>> > that
>> > would allow me to acheive my goal?
>> >
>> > Is it possible with servers ? or i need dedicated hardware
>> > (cisco/juniper/other?) if dedicated hardware needed, i would be glad to
>> > hear from your experience what do you recommend in terms of performance
>> > and
>> > price.
>> I don't know of any 100GE hardware for any PC, but I may be a bit
>> behind on the times.
>> The way we saturate a 100GE with a FreeBSD (or Linux) system is using
>> a 10G transmission stream and loop the data stream over the net using
>> MPLS. Works quite well, though no end system ever sees more than about
>> 9.9G, the routers do.
>> We are using Alcatel-Lucent routers at this time for our national test
>> network. It is available for research by educational, commercial and
>> research organizations for a little longer as a federally funded
>> testbed for 100G research. When the funding for that project runs out,
>> most of the hardware will be re-purposed and will no longer be
>> available for research. gnn@ mentioned it about a year ago and
>> suggested that some FreeBSD people might want to submit proposals, but
>> I sw no responses. We have tested with Juniper and they will work,
>> too. All 100G hardware is just a mite pricey, though it has dropped
>> tremendously over the past year and a half and I expect it will
>> continue to do so.
>> --
>> R. Kevin Oberman, Network Engineer
>> E-mail: kob6558 at
> --
> Sami Halabi
> Information Systems Engineer
> NMS Projects Expert
> FreeBSD SysAdmin Expert

R. Kevin Oberman, Network Engineer
E-mail: kob6558 at

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