Re: WAN Emulation Appliances

Hello Aaron,
I have the older model of Shunra, but I know they have developed their
reporting significantly, just as per flow statistics. You might want to
contact them directly to get updates on their reporting (worst case
scenario you could always use netflow for verify specific statistics). The
nice part is you could use Visio to create your emulated network, you can
be very specific which host/applications (src/dst) will be emulated with
which latency and which should be left alone. You can insert a wireshark
sniffer anywhere in the topology. It's nice to use a hardware solution
instead of a software, as it's independent of the system you might be
testing. Overall I would suggest buying the appliance, only if you plan on
using it regularly. If it's just a one time deal, it might not be worth the
cost, you could just use some of the freeware programs or contact them to
do the testing for you as a consulting engagement.

I know that OPNET an application performance module where you can sniff
couple of transactions (like Oracle translations) and play around with
attributes like latency, bandwidth, packet loss..etc to see what it will do
on the transaction overall time. That is more of a WAN simulation and not
emulation. The biggest problem with this that I had was sniffing each
transaction to represent the overall behavior of the application/database.
The more transactions you try to capture the better it will represent your
applicaiton, but that will take a lot more at as it's not easy to isolate a
transaction when you are dealing with multiple tiers such as
web/app/database.

Hope that helps a little bit, contact me offline if you have any more
questions.

Tom

On Fri, Feb 3, 2012 at 1:56 AM, Aaron Riemer <ariemer_at_amnet.net.au> wrote:

> Hi Tom,
>
> I have just been searching through the Groupstudy archives and found a post
> you made regarding WAN emulation appliances.
>
> We are in a position to purchase a WAN emulator for the purpose of testing
> applications and simulating WAN environments before making decisions as to
> where to deploy server infrastructure.
>
> What I am particularly interested in is the ability to report on
> application
> statistics for particular "flows" or application sessions through the WAN
> sim (Take JDE/Oracle sessions for example).
>
> Any advice you could offer in this area would be most appreciated.
>
>
> Thanks,
>
> Aaron.
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> Tom
> Kacprzynski
> Sent: Thursday, 17 November 2011 2:36 AM
> To: shiran guez
> Cc: Rookie Ccie; Cisco certification
> Subject: Re: WAN Emulation Appliances
>
> Shunra has a product if you are looking for a hardward or software
> solution. It's pretty nice, all depends on what you are trying to do. OPNET
> has a very sophisticated WAN Simulation, but it's really pricey and used
> for simulation not emulation. If it's just some quick to do little testing,
> I agree get at VM, you can search for a VMware appliance on their website.
> What exactly do you want to use it for and I may be able to help you.
>
> Tom Kacprzynski
>
>
> On Wed, Nov 16, 2011 at 9:28 AM, shiran guez <shiranp3_at_gmail.com> wrote:
>
> > Hi Rookie
> >
> > You can save your self some $$$ by taking simple Linux (Distribution of
> > your choice) and use a very nice built in tool (in most) name "tc"
> (traffic
> > control) used for policing , shaping, as well as providing the ability to
> > create wan emulation using the netem (network emulator).
> >
> > for more information:
> > http://www.linuxfoundation.org/collaborate/workgroups/networking/netem
> >
> > Regards,
> >
> > Shiran
> >
> > On Wed, Nov 16, 2011 at 4:11 PM, Rookie Ccie <rookie.ccie_at_gmail.com>
> > wrote:
> >
> > > Hi Group,
> > >
> > > I was looking at some WAN emulation appliances and came across
> > > Apposite Technologies (http://www.apposite-tech.com). Their products
> > > seems to be good. Appreciate if some one can share their experience if
> > > they have used this product. If not please suggest other products.
> > >
> > > Thanks in advance
> > >
> > > Rookie
> > >
> > >
> > > Blogs and organic groups at http://www.ccie.net
> > >
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> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
> > --
> > Shiran Guez
> > MCSE CCNP NCE1 JNCIA-ENT JNCIS-ENT CCIE #20572
> > http://cciep3.blogspot.com
> > http://www.linkedin.com/in/cciep3
> > http://twitter.com/cciep3
> >
> >
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> >
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Received on Mon Feb 06 2012 - 11:57:05 ART