[c-nsp] PA-E3 in 7204VXR - low bandwith

[Jason Lixfeld]

That link is a fantastic read.  Thanks for posting!

One question I have though - why is a UDP test is better?  Simply because it's inherently made up of small packets?  I'd imagine the UDP iPerf test doesn't try to send large byte UDP packets, but that might be totally incorrect; I haven't used iPerf in some time.

--

Sent from my mobile device.

On 2011-07-15, at 7:26 AM, "Mackinnon, Ian" <Ian.Mackinnon at atos.net> wrote:

> Is that a TCP test on iperf?
> Try again using UDP, it may be the long fat pipe issue 
> http://bradhedlund.com/2008/12/19/how-to-calculate-tcp-throughput-for-lo
> ng-distance-links/
> 
> Ian
> 
>> -----Original Message-----
>> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
>> bounces at puck.nether.net] On Behalf Of Werner Detter
>> Sent: 15 July 2011 11:03
>> To: cisco-nsp at puck.nether.net
>> Subject: [c-nsp] PA-E3 in 7204VXR - low bandwith
>> 
>> Hi everybody,
>> 
>> a customer connected with a 7204VXR (NPE-225), PA-E3 has bandwith-
>> problems. The maximum outgoing TCP-throughput amounts only 15Mbit/s
>> instead of 34Mbit/s (measured with iperf from the customer-side:
>> 
>> [  5]  0.0-10.0 sec  17.4 MBytes  14.6 Mbits/sec
>> 
>> Incoming bandwith is ok:
>> 
>> [  4]  0.0-10.1 sec  39.1 MBytes  32.3 Mbits/sec
>> 
>> There are no rate-limits configured, there are no errors on the
> interfaces
>> itself, the 7204VXR is pretty underutilized - so everything seems fine
> from
>> that point of view.
>> 
>> Any Ideas?
>> 
>> Regards,
>> Werner
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
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> 
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