Netflow configuration

Answered Question
Oct 1st, 2008
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Hi All,


When enable netflow on the router, need to put destination netflow collection ip address and port, could I put a network portion with subnet instead of specific ip address? Like:


ip flow-export destination 192.168.10.0 9991


instead of:


ip flow-export destination 192.168.10.10 9991


thank you,

Correct Answer by Giuseppe Larosa about 8 years 9 months ago

Hello Trina,

until some recent releases on some platform netflow export could be configured for a single host.

Some new releases have introduced the support of two hosts.


So I think the answer is that you need to specify the host ip address.


However, it could be interesting to think about using a directed broadcast destination address for example

192.168.10.255

but I don't think it is supported it would be a way to export to multiple hosts in the same subnet.

This could be possible because flow export are UDP unidirectional flows from router to collector device


Hope to help

Giuseppe


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Correct Answer
Giuseppe Larosa Wed, 10/01/2008 - 23:17
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Hello Trina,

until some recent releases on some platform netflow export could be configured for a single host.

Some new releases have introduced the support of two hosts.


So I think the answer is that you need to specify the host ip address.


However, it could be interesting to think about using a directed broadcast destination address for example

192.168.10.255

but I don't think it is supported it would be a way to export to multiple hosts in the same subnet.

This could be possible because flow export are UDP unidirectional flows from router to collector device


Hope to help

Giuseppe


trinawong Thu, 10/02/2008 - 17:53
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Hi Giuseppe,


thanks a lot for your help!


Thank you,

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