[j-nsp] Sampling Traffic --- Urgent

[Uttam Shrestha Rana]

Dear Steinar,

Thank you so much for your help.
Well we haven't had configured loop back address and will be checking as you
have suggested.

Thank You,

Regards,
Uttam

On Sun, Dec 20, 2009 at 10:30 PM, <sthaug at nethelp.no> wrote:

> > 1) Interfaces where upstream providers are connected, input and output
> > sampling has enabled, is it a best practice or not?
>
> Well, if you want to collect netflow info you need to have sampling
> enabled. "Best practice" isn't really relevant here, I think.
>
> However, if you're wondering about such things as sampling ratio, you
> should probably start with something like 1:1000 and see if that works
> for your needs.
>
> > 2)In sampling forwarding options, I have configured cflowd destination
> > (203.XX.XX.2) a collector server IP, with the source IP of interface C.
> Is
> > it a best practice if i kept the source IP as the interface C (collector
> > connected interface 203.xx.xx.1) or not ?  If i don't specify the source
> IP
> > address then what can be the result?
>
> We use the loopback address of the router as the source address (we have
> "default-address-selection" set under the system stanza). In general it
> would preferable to use the loopback address instead of an interface
> address.
>
> Steinar Haug, Nethelp consulting, sthaug at nethelp.no
>