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netflow on nexus 5600

Hi All,

 

To make a go-no-go decision to use netflow in our customer's Nexus 5600 based DC core we try to find relevant information on how the netflow export information is created - namely which pieces of hardware are used at each step of the process and how their performance may be affected depending on the amount of traffic or connections/sessions or sampling configuration.

Unfortunately the official configuration guide available at link:

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5600/sw/system_management/7x/b_5600_System_Mgmt_Config_7x/b_6k_System_Mgmt_Config_7x_chapter_010011.html#reference_B1B13A010DDA497DBAA0AA4563F9CB0A

is very concise and gives only general understanding that netflow configuration will affect overall cpu utilization and allows to only make assumptions on why and how.

There are also a couple of slides (namely 102 through 105) in BRKDCT-1890.pdf CiscoLive presentation available at link:

https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2016/pdf/BRKDCT-1890.pdf

and it shed some light on M3 and F3 modules of Nexus 7000 platform but again provides little details related to Nexus 5600 platform.

All in all - I will appreciate if any experienced colleague will be able to provide useful links or relevant pieces of information and give us a ground to make the right decision for a specific environment.

 

Thank you in advance.

 

Best regards

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