[c-nsp] Transfer speed issues on 3560G

[Jay Nakamura]

I wonder what kind of speed you will get if you connected the two
server's NIC directly to each other and did the test so you can take
the switch out of the equation.

On Thu, Jun 24, 2010 at 10:00 PM, Bill Blackford
<BBlackford at nwresd.k12.or.us> wrote:
> Sorry about top posting.
>
> Try to transfer a large file via ftp between the two hosts using the hash '-h' switch. If the hashes are choppy, then that would be indicative of a dup mis-match.
>
> -b
>
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Bill Blackford
> Sent: Thursday, June 24, 2010 6:50 PM
> To: Brandon Ewing
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] Transfer speed issues on 3560G
>
> Duplex mis-match? Have you checked the interface stats on both ends? Have you tried to force 1000/full on all interfaces concerned?
>
> -b
>
>
>
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Jon Lewis
> Sent: Thursday, June 24, 2010 5:55 PM
> To: Brandon Ewing
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] Transfer speed issues on 3560G
>
> On Thu, 24 Jun 2010, Brandon Ewing wrote:
>
>> This is a strange issue that I have noticed on a 3560G that we have
>> deployed.  We have two servers, on different ports, controlled by different
>> ASICs.  Each port negotiates a 1000mb/s link, but I cannot get more than
>> 11MB/s (88mb/s) of traffic between the two ports.  I conducted the following
>> tests:
>>
>> Transferring a 1GB file from one server to the other, written to /dev/null
>> Single transfer averaged 11.2MB/s
>
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