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NetFlow on 3825 Router

all,

is it possible to configure a 3825 router with 2 source interface and 2 destination for NetFlow?

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Silver

Re: NetFlow on 3825 Router

Hello John,

for sure you cannot use two different sources and about double export destination:

yes, you can in 12.4

NetFlow Multiple Export Destinations: Benefits

The NetFlow Multiple Export Destinations feature enables configuration of multiple destinations for the NetFlow data. With this feature enabled, two identical streams of NetFlow data are sent to the destination host. Currently, the maximum number of export destinations allowed is two.

The NetFlow Multiple Export Destinations feature improves the chances of receiving complete NetFlow data because it provides redundant streams of data. Because the same export data is sent to more than one NetFlow collector, fewer packets are lost.

see

http://www.cisco.com/en/US/docs/ios/netflow/configuration/guide/cfg_nflow_data_expt_ps6350_TSD_Products_Configuration_Guide_Chapter.html#wp1057619

If you needed you could try to NAT the source of export packets on another router in the path to the second destination.

Hope to help

Giuseppe

2 REPLIES
Hall of Fame Super Silver

Re: NetFlow on 3825 Router

Hello John,

for sure you cannot use two different sources and about double export destination:

yes, you can in 12.4

NetFlow Multiple Export Destinations: Benefits

The NetFlow Multiple Export Destinations feature enables configuration of multiple destinations for the NetFlow data. With this feature enabled, two identical streams of NetFlow data are sent to the destination host. Currently, the maximum number of export destinations allowed is two.

The NetFlow Multiple Export Destinations feature improves the chances of receiving complete NetFlow data because it provides redundant streams of data. Because the same export data is sent to more than one NetFlow collector, fewer packets are lost.

see

http://www.cisco.com/en/US/docs/ios/netflow/configuration/guide/cfg_nflow_data_expt_ps6350_TSD_Products_Configuration_Guide_Chapter.html#wp1057619

If you needed you could try to NAT the source of export packets on another router in the path to the second destination.

Hope to help

Giuseppe

Re: NetFlow on 3825 Router

i have Cisco IOS Software, 3800 Software (C3825-SPSERVICESK9-M), Version 12.4(17b), REL

EASE SOFTWARE (fc2). thanks giuseppe!

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