[j-nsp] netflow v9 on a Juniper MX

[Felix Schueren]

> Nonsense. The CPU usage might be ever so slightly higher in v9, but
> neither is a major contributor to overall load even at the maximum
> supported RE sampling rate. The only time you *need* a services card is
> when you want to do a much higher rate than the RE can support (i.e. you 
> want to do some 1:1 sampling, etc). The only reason you need a MS-DPC 
> for v9 is they just never got around to writing it for the RE.
> 
100% agreed. I've stumbled across this as well, and it's annyoing as 
hell. I'd even settle for a max-pps one magnitude less than for the 
current v5 stuff, i.e. something like 700pps maximum. Or a maximum rate 
of 1 in 10000 packets, anything really. Right now it simply goes like this:

me: "Boss, we need to order a dozen MS-DPCs for millions of dollars that 
we don't actually need to get ipv6 netflow data"
boss: "(laughs, then points me to the exit)"

I've already complained to my sales people and my SE. Bitching on this 
list won't hurt. :)

btw, I've already asked to implement two hidden knobs:

set system violate-arp-rfcs;
set system allow-routing-engine-overloading;

or actually, alias it with
set system user-knows-he-can-break-stuff;

Kind regards,

Felix

-- 
Felix Schüren
Head of Network

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