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<ref name=":0" />A '''data monitoring switch''' is a networking hardware appliance that provides a pool of monitoring tools with access to traffic from a large number of network links. It provides a combination of functionality that may include aggregating monitoring traffic from multiple links, regenerating traffic to multiple tools, pre-filtering traffic to offload tools, and directing traffic according to one-to-one and many-to-many port mappings.<ref>{{Cite web|title=Arista EOS® Precision Data Analysis with DANZ|url=https://www.arista.com/en/solutions/precision-data-analysis-of-network-traffic|last=Sabeesh|date=2017-10-24|website=Arista Networks|language=en-gb|access-date=2020-05-23}}</ref>
Data monitoring switches enable organizations to use their monitoring tools more efficiently, centralize traffic monitoring functions, and share tools and traffic access between groups. Some of these devices also provide functionality that helps justify tool purchases and simplify deployment and management of the device itself.
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External interfaces are also available as follows:
*A platform (Windows) based server; this interface is preferred for managing a large number of devices through a single interface
*Third-party [[SNMP]] management tools; this interface in preferred in environments with centralized SNMP management systems such as [[IBM Tivoli]] or [[HP OpenView]] <ref name=":0">[http://www.HP.com/Go/openview HP Open View]</ref>
== Advantages ==
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