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RE: Route Optimization Software / Appliance
From: Drew Weaver <drew.weaver () thenap com>
Date: Tue, 23 Aug 2011 17:32:31 -0400

The more flows you throw at it the more RAM/CPU it uses until eventually it can't handle anymore. You can keep raising 
your sampling rate if you want but at some point the CNA 336 is just too old/slow. As I said if the kernel supported 
more RAM it would still be a viable platform. I think Avaya just got tired of having to keep the 3 dudes they had on 
staff to support it.


-----Original Message-----
From: Holmes,David A [mailto:dholmes () mwdh2o com] 
Sent: Tuesday, August 23, 2011 5:11 PM
To: Gregor Visconty; Drew Weaver
Cc: nanog () nanog org
Subject: RE: Route Optimization Software / Appliance

I used Pathcontrol with great success, moving bandwidth from one provider to another at a very granular level. It beat 
the Netflow/CAIDA tools manual approach hands down. I don't understand the performance issue, though, and this is not 
the first time performance has been raised as an issue. Some have seemed to think that the Pathcontrol existed inline 
in the data plane, so, it was maintained, Pathcontrol could not scale to 10 GiGE and higher ISP links. But Pathcontrol 
was defined as a route-reflector BGP client in the control plane, and functioned as a method of calculating the fastest 
path to destination BGP prefixes, and then advertising the best BGP route to IBGP route-reflector peers, which, in the 
absence of route table churn, did not require a super high-performing device.

Avaya should either bring the product back, or release the licensing for someone else to use.

-----Original Message-----
From: Gregor Visconty [mailto:gvisconty () gmail com]
Sent: Tuesday, August 23, 2011 11:15 AM
To: Drew Weaver
Cc: nanog () nanog org
Subject: Re: Route Optimization Software / Appliance

I used the PathControl for years (~2003-2007) and it rocked.  We used
it for both performance and cost, preferring cheaper links as long as
the performance was comparable.  It was super stable, I think we had
one or two problems with it the entire time it was installed.  The
only drawback was it was too good, we got lazy and just let it do


On Tue, Aug 23, 2011 at 10:34 AM, Drew Weaver <drew.weaver () thenap com> wrote:
Honestly someone should just convince Avaya to opensource and/or sell the Route Science product.

It's only real flaws (even today) are the performance of the hardware it was built on and the lack of IPv6 support.

Give it an x64 kernel that supports 32GB of RAM and you could probably still be using it today.


-----Original Message-----
From: David Israel [mailto:davei () otd com]
Sent: Tuesday, August 23, 2011 12:12 PM
To: nanog () nanog org
Subject: Re: Route Optimization Software / Appliance

This is basically Arbinet's "Optimized" product; it uses actual
measurements for loss, round trip time, and jitter to choose routes.
Right now, it is just sold as a service, going through the providers
they sell access to; I don't know if you could purchase/license the
software for your own use.


(Full disclosure: Arbinet is my current employer.)

On 8/22/2011 1:27 PM, Babak Pasdar wrote:
Hello Group,

I was wondering if anyone could share their experience with any route optimization approaches, methodologies or 
platforms, either open source or commercial (Internap FCP), that can actively adjust BGP parameters based on latency 
and number of layer 3 hops to a network rather than AS hops.  We have upstreams all over the country and we would 
like to automate optimization to take the best egress path.

Thank you for your feedback in advance.

Best Regards,


Babak Pasdar
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