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Training Camp • Cybersecurity Glossary
ERSPAN (Encapsulated Remote Switch Port Analyzer) is a Cisco proprietary technology that extends the functionality of traditional port mirroring by encapsulating mirrored traffic in GRE (Generic Routing Encapsulation) for remote monitoring and analysis in a virtual or physical network environment.
ERSPAN Definition: ERSPAN (Encapsulated Remote Switch Port Analyzer) is a Cisco proprietary technology that extends the functionality of traditional port mirroring by encapsulating mirrored traffic in GRE (Generic Routing Encapsulation) for remote monitoring and analysis in a virtual or physical network environment.
ERSPAN (Encapsulated Remote Switched Port Analyzer) is a feature in network switches that allows the remote monitoring of network traffic. It enables the creation of a mirrored copy of network traffic on a specific port or VLAN and sends that traffic to a remote monitoring device, such as a security tool or network analyzer, for analysis and inspection without affecting the original network traffic flow. This feature is commonly used for network troubleshooting, performance monitoring, and security analysis.
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