[c-nsp] netflow

[Brian Feeny]

Netf.ow does not create too much traffic really, but it does consume  
memory
and it does cause a pretty steady flow of traffic from the router.  Its  
probably
screwing with the delays on your VoIP traffic.  If you put some basic  
QoS in place
on the 1750 then that will probably make your voice problems go away.   
12.3 may
even support the Auto-QoS stuff which is a real nice way to give you  
something to
start off with, especially on an edge device like a 1750.

Brian


On Feb 21, 2005, at 11:27 AM, Steve Postma wrote:

> I have 15 or 16 cisco 1750's that I am running netflow on with no
> problems. However, 1 router has VOIP running through it and netflow
> seems to be causing weird things to happen. I imagine the greater
> traffic load to be the culprit. The IP phone's are unable to sync up
> correctly unless I drop netflows from the interface. Would increasing
> the cache size be a possible workaround? I am running 12.3-1a with  
> 48/16
> megs memory. Any advice is appreciated.
>
>
>
>                              ________________________________________
>
> Steve Postma
> Systems Administrator
>
> 781-994-1200
> spostma at travizon.com <mailto:spostma at travizon.com>
>
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------------------------------------------------------------------------ 
------
Brian Feeny, CCIE #8036, CISSP    	e: signal at shreve.net
Network Engineer           			p: 318.213.4709
ShreveNet Inc.             			f: 318.221.6612