Digi TX54, User Manual

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Monitoring Configure NetFlow Probe
TX54 User Guide 916
where version is one of:
n
v5 —NetFlow v5 supports IPv4 only.
n
v9 —NetFlow v9 supports IPv4 and IPv6.
n v10 —NetFlow v10 (IPFIX) supports both IPv4 and IPv6 and includes IP Flow Information
Export (IPFIX).
The default is v10 .
1. Enable flow sampling by selecting a sampling technique. Flow sampling can reduce flow
processing and transmission overhead by providing a representative subset of all flows.
(config)> monitoring netflow sampler type
(config)>
where type is one of:
n
none —No flow sampling method is used. Each flow is accounted.
n
deterministic —Selects every n th flow, where n is the value of the flow sample
population.
n
random —Randomly selects one out of every n flows, where n is the value of the flow
sample population.
n
hash —Randomly selects one out of every n flows using the hash of the flow key, where
n is the value of the flow sample population.
5. If you are using a flow sampler, set the number of flows for the sampler:
(config)> monitoring netflow sampler_population value
(config)>
where value is any number between 2 and 16383 . The default is 100 .
6. Set the number of seconds that a flow can be inactive before sent to a collector:
(config)> monitoring netflow inactive_timeout value
(config)>
where value is any is any number between 1 and 15 . The default is 15 .
7. Set the number of seconds that a flow can be active before sent to a collector:
(config)> monitoring netflow active_timeout value
(config)>
where value is any is any number between 1 and 1800 . The default is 1800 .
8. Set the maximum number of flows to probe simultaneously:
(config)> monitoring netflow max_flows value
(config)>
where value is any is any number between 0 and 2000000 . The default is 2000000 .