From: John Wong (johnwk@unimelb.edu.au)
Date: Wed Nov 24 2004 - 10:56:43 GMT-3
Hi Tim,
How about the hidden TTCP command? Check out
http://www.cisco.com/warp/public/471/ttcp.html
Cisco ported this darn useful tool from the UNIX
world (among other things, like mrinfo, etc..).
Below is a sample of how it looks like.
R6#ttcp
transmit or receive [receive]: tr
Target IP address: 10.0.0.1
perform tcp half close [n]:
send buflen [8192]:
send nbuf [2048]:
bufalign [16384]:
bufoffset [0]:
port [5001]:
sinkmode [y]:
buffering on writes [y]:
show tcp information at end [n]:
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 10.0.0.1
%Connect failed: Connection refused by remote host
Hope this helps.
ccie2be wrote:
> Brian,
>
> That sounds like an excellent idea. Thank you.
>
> Out of curiosity, why would I shape rather than police on the downstream
> router?
> Does it make a difference? Actually, my hunch is that either would work for
> this purpose, do you agree?
>
> Thanks, Tim
>
> ----- Original Message -----
> From: "Brian McGahan" <bmcgahan@internetworkexpert.com>
> To: "ccie2be" <ccie2be@nyc.rr.com>; "Group Study" <ccielab@groupstudy.com>
> Sent: Tuesday, November 23, 2004 2:25 PM
> Subject: RE: Using IOS to generate a specific volume of traffic
>
>
> Tim,
>
> You could do extended ping with a timeout of 0 and then shape
> the outbound interface to your desired rate. This would have to be done
> downstream of your QoS config you're trying to test.
>
> Brian McGahan, CCIE #8593
> bmcgahan@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
> Toll Free: 877-224-8987 x 705
> Outside US: 775-826-4344 x 705
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>
>
>
>>-----Original Message-----
>>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
>
> Of
>
>>ccie2be
>>Sent: Tuesday, November 23, 2004 12:24 PM
>>To: Group Study
>>Subject: Using IOS to generate a specific volume of traffic
>>
>>Hi guys,
>>
>>Is there a tool within IOS that can be used to accurately generate a
>
> given
>
>>amount of traffic?
>>
>>For example, suppose I want to test a MQC shaping or policing
>>configuration
>>and I want to generate a continuous stream of traffic at 65k to see
>
> what
>
>>happens when the cir is 64k. Is there a way to do this ?
>>
>>I know that by using ping and setting the packet size and repeat count
>
> I
>
>>can
>>generate traffic, but it seems that using this method doesn't
>
> translate to
>
>>a
>>specific rate.
>>
>>TIA, Tim
>>
>>
>
> _______________________________________________________________________
>
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>
>
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