[WEBINAR] Application Acceleration: Faster Performance for End Users

Port Mirroring

Definition - What does Port Mirroring mean?

Port mirroring is a method of copying and sending network packets transmitted as input from a port to another port of a monitoring computer/switch/device. It is a network monitoring technique implemented on network switches and similar devices.

Port mirroring is also known as switched port analyzer (SPAN) and roving analysis port (RAP).

Techopedia explains Port Mirroring

Port mirroring is implemented in local area networks (LAN), wireless local area networks (WLAN) or virtual local area networks (VLAN) to identify, monitor and troubleshoot network abnormalities. It is configured at the network switch by a network administrator (NA) or network monitoring/security application. When enabled, the traffic that emerges to and from a specific port number is automatically copied and transmitted to a monitoring/destination port. Typically, the destination port is part of the monitoring software or security application that analyzes these data packets.

The port mirroring process is generally hidden from the source and other nodes on the network.

Techopedia Deals

Connect with us

Techopedia on Linkedin
Techopedia on Linkedin
"Techopedia" on Twitter

Sign up for Techopedia's Free Newsletter!

Email Newsletter

Join thousands of others with our weekly newsletter

Free Whitepaper: The Path to Hybrid Cloud
Free Whitepaper: The Path to Hybrid Cloud:
The Path to Hybrid Cloud: Intelligent Bursting To Amazon Web Services & Microsoft Azure
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.