ERSPANEncapsulated Remote SPAN
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The architecture also supports programmable telemetry, including the insertion/processing of in-band telemetry headers (and associated packet metadata such as traffic identifiers and timestamps) as well as out-of-band network visibility (such as per-packet/per-flow attribute histograms and new ERSPAN like protocols).
The CloudLens platform offers multiple tapping products, and its tunneling functionality includes GRE, VLAN, and ERSPAN.