why the flow of netflow collect not equal the flow of snmp polling
by use the cisco 7606.ãVersion 12.2(33)SRB5,Supervisor Engine 32 10GEã,when uset netflow collect the flow of app,and use snmp get the port traffic.but now,the flow of netflow not equal the traffic of snmp polling.why.
Re: why the flow of netflow collect not equal the flow of snmp p
>> mls netflow sampling
this means that not all packets are processed by netflow but only one every N packets.
This has been introduced first on Cisco 12000.
It is a measure of scalability on devices that are hardware based the netflow process cannot be implemented in HW so for providing netflow stats without impacting on the high performance of linecards sampling has been introduced.
The price to pay is that short life flows like a DNS request are missed but it is used also on service provider networks.
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