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

[William F. Maton Sotomayor]

On Fri, 15 Jul 2011, Werner Detter wrote:

> Hi Ian,
>
>> Is that a TCP test on iperf?
> Yes, that was the result of a TCP-test on iperf.

Also make sure you are using a modern enough version of iperf.  Some 
versions needed a patch to work correctly with some versions of the linux 
kernel.

>
>> Try again using UDP,
> I did, there I reach 32Mbit/s in both directions.
>
>> it may be the long fat pipe issue
>> http://bradhedlund.com/2008/12/19/how-to-calculate-tcp-throughput-for-lo
>> ng-distance-links/
>
> Thanks, I'll check that :)
> Werner
>
>
>> 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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