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In addition to directing monitoring traffic, data monitoring switches are capable of filtering traffic by Layer 2 to Layer 4 protocol criteria such as VLAN or IP address, enabling only traffic of interest to be sent to specific tools. This capability can prevent tool oversubscription and facilitate drilling down on issues.
As this is still a relatively new set of technologies, there are several different approaches to the hardware and software configurations. As such, each product sports benefits that none of the competitors includes. Some data monitoring switches offer different management interfaces (fully integrated GUI, automation, etc.), load balancing across multiple tool ports, filtering on patterns in packet payloads, and converting media and data rates so tools can be used to monitor traffic from dissimilar links
The more advanced products offer enhanced security (access control, port permissions, etc.) either on the individual level or by using groups, filter library / archiving, and the ability to manage multiple devices simultaneously from a single interface.
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