cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
1089
Views
0
Helpful
5
Replies

Netflow engine 5.0.2 and sizing server

j.canastero
Level 1
Level 1

I installed the NFC version recently, in order to collect the flows of around 160 routers, and I had to create near 884 filters and aggregators. My question is: if I have a Solaris server with 2 processors of 400Mhz and RAM 2 GB, it is possible that the equipment has interruptions or stop the services

When I enter the option of reports, is too slow.

What are the memory values that would be the optimal ones to setup in the file /config/nfcmem?

What other parameter is necessary to review of OS and the application netflow?

thanks in advance

J.Canastero

5 Replies 5

didyap
Level 6
Level 6

Exporting a large number of flows can degrade the router and Netflow Collector performance. To decrease the load, refer to http://www.cisco.com/en/US/products/sw/iosswrel/ps5207/products_feature_guide09186a00801a7618.html

To aggregate the flows, refer to http://www.cisco.com/en/US/products/sw/netmgtsw/ps1964/products_implementation_design_guide09186a00800d6a11.html#wp1031105

Jan Nejman
Level 3
Level 3

Dear Mr. Canastero,

can you more closely specify what amount of traffic is monitored or how many flows generate

your routers... Our company developed a Linux based Netflow monitoring software. We recommended 3Ghz Pentium 4 with 1-2GB RAM for processing 800 mil flows/day. (number of flows depends on network traffic character and traffic volume).

Jan

Caligare Co.

http://www.caligare.com

Hello,

We are collecting around 1720000 flows/day

Jesus Canastero

Hello,

I think that your processor cannot be utilized by netflow traffic. Try to find which process uses your CPU or disk.

Jan

Caligare Co.

http://www.caligare.com

hello Jan

Using prstat on solaris the nfc process use almost 50% from CPU0, and I have configured the nfcmem file as follows

collector min=640M max=768m

Webmem min=256 max=512

cnsxml min 256 max=512

genreport min=256 max=512

re_mem min=256 max=512

UDP_READER_POOL_ENTRIES 70000

Jesus Canastero

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: