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Flow collector placement and usage scenarios

A flow collector's traffic analysis represents a subset of the information available from a probe. However, flow collectors are a good choice for supplementing the probes when monitoring border routers of a large distributed network. A flow collector can also be used within a single data center – to monitor internal switches.

However, indiscriminate monitoring of all interfaces on hot/core devices can generate very large numbers of flows and create significant CPU load on these devices. In such cases, CPU load monitoring is particularly important and port pairing may be required to reduce the load and avoid duplication.

In particular, the following scenarios can be distinguished: