hey leo,

i've tried this on one our 1941 but i'm getting an error. do you know what i'm missing?

1941(config)#ip flow-top-talkers

1941(config-flow-top-talkers)#sort-by bytes

1941(config-flow-top-talkers)#cache-timeout 60000

1941(config-flow-top-talkers)#exit

1941(config)#int g0/1

1941(config-if)#ip flow ingress

1941(config-if)#ip route-cache

1941(config-if)#do show ip flow top

% Top talkers not configured

Hi John,

Did you configure "top 200" command on 1941?

Kind Regards,
Ivan

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whoops! i forgot that line. thanks! +5

i was following leo's thread and missed it.

https://supportforums.cisco.com/message/3640049

Hi Ivan,

Is it supported on 3500 or 3750 ?

Hi Prashant,

3750 and 3560 switches do not support netflow, but there is a service module which can be inserted into 3750X and this supports Flexible Netflow (FNF). The commands are available but  will not work unless the module is installed.

http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps6406/data_sheet_c78-584733.html

The netflow support matrix can be seen in table 1 here:

http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6555/ps6601/prod_white_paper0900aecd80406232.html

Kind Regards,
Ivan

**Please grade this post if you find it useful.

Glad it works, John :-) Thanks for rating the post.