Help needed - Cisco Netflow

Phil Bedard bedard.phil at
Fri Oct 10 18:17:18 UTC 2008

It depends on how many active flows you have at any one time.  Also, I  
don't think the SIP-601 supports full netflow V5 in hardware, only V8,  
which is aggregated netflow, which may not be what you want.  It does  
do V5/V9 sampled netflow in hardware. The sampled netflow on that  
platform is better than on say the 6500/7600, so I would just go with  


On Oct 10, 2008, at 1:20 PM, Lee, Steven (NSG Malaysia) wrote:

> Hi all, the LC on 12000 series is 12000-SIP-601 (engine 5) with  
> multiple STM-1 SPA card. As far as I know the engine 5 card cannot  
> do 450Kpps on netflow. Since the STM-1 is mainly for NB-AMR traffic  
> (95%), do you recommend the sampled netflow instead? Does anyone  
> aware of the sampled netflow accuracy?
> -----Original Message-----
> From: Julio Arruda [mailto:jarruda-cnsp at]
> Sent: Saturday, October 11, 2008 12:43 AM
> To: Lee, Steven (NSG Malaysia)
> Subject: Re: Help needed - Cisco Netflow
> Lee, Steven (NSG Malaysia) wrote:
>> Hi all, I have a customer who has a MPLS network for E/// Media  
>> Gateway (MGW) NB-AMR VoIP traffic. The packet size for the NB-AMR  
>> traffic is fixed size 110 bytes. During the high load period, it  
>> can reaches 450Kpps on a STM-1 link. The router platform is Cisco  
>> 12000 series, can the router generate 100% netflow data with such  
>> traffic load? Also can someone suggest a carrier class netflow  
>> collector for mobile service provider environment.
> Just a quick note..
> You may want to post the Line Cards they have...Distinct LC have  
> distinct Netflow capabilities (and impact).

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