[j-nsp] netflow v9 on a Juniper MX

[Richard A Steenbergen]

On Tue, Mar 09, 2010 at 03:29:05PM +0100, Sean Clarke wrote:
> This is correct. To do v9 is far more processor intensive, hence you 
> really don't want to be doing this on the Routing Engine, as is the case 
> with v5. All this functionality is off loaded onto the MS-DPC instead.

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.

-- 
Richard A Steenbergen <ras at e-gerbil.net>       http://www.e-gerbil.net/ras
GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC)