- Port Mirroring is the capability on a network switch to send a copy of network packets seen on a switch port to a network monitoring device connected on another switch port.
- Port Mirroring is also referred to as SPAN (Switched Port Analyzer) on Cisco Switches.
- Port Mirroring overcomes the limitation of promiscuous mode.
• By providing granular control on which traffic can be monitored
• Ingress Source
• Egress Source
- Helps in troubleshooting network issue by providing access to:
• Inter-VM traffic
• Intra-VM traffic
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