[c-nsp] IP SLAs - throughput measurement

[Adam Greene]

Ras,

Thanks for the advice. I'm going to show my ignorance here. I'm not quite 
sure how that will multiply the traffic load by ~255. I assume you are not 
saying that I could generate a single ~3.92Mbps traffic stream from PC to 
PC, and the fact that the switches are routing to each other will cause them 
to route the traffic on all 255 IP's in the /24, thus multiplying the 
inter-switch traffic to 1Gbps. There must be something I'm not getting here.

Would you mind elaborating a bit more for me? I'd like to understand your 
method better, if possible.

Thanks,
Adam

----- Original Message ----- 
From: "Jee Kay" <jeekay at gmail.com>
To: "Adam Greene" <maillist at webjogger.net>
Cc: <cisco-nsp at puck.nether.net>
Sent: Monday, December 18, 2006 11:49 AM
Subject: Re: [c-nsp] IP SLAs - throughput measurement


> My usual method of this is mgen and L3 on the switches.
>
> Basically, bring up L3 on the switches and set the default routes
> (assuming they're not already doing L3.. otherwise chose some
> 192.0.2/24 address space) to point at each other. This nicely
> multiplies your traffic load by ~255 (assuming default TTLs).
>
> Then point mgen (or iperf if you like) at the switch L3 and watch the
> error counters :) If they're all zero (no overruns, no drops) then
> you're good.
>
> Ras
>