OS10 Enterprise Edition User Guide Release 10.4.0E(R3)

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Port monitoring

Port monitoring enables monitoring of ingress or egress traffic of one port to another for analysis. A monitoring port (MG) or destination port, is the port where the monitored traffic is sent for analysis. A monitored port (MD) is the source interface which is monitored for traffic analysis, also called source port.

Depending on the location of the destination interface, port monitoring is performed as follows:

  • Local port monitoring — The port monitoring is performed in the same switch. The switch forwards a copy of incoming and outgoing traffic from one port to another port for further analysis.
  • Remote port monitoring (RPM/RSPAN) — The port monitoring is performed on traffic running across a remote device in the same network. The monitored traffic is carried over the L2 network.

  • Encapsulated remote port monitoring (ERPM) — The port monitoring is performed on an L3 network. The traffic from the source port is encapsulated and forwarded to the destination port in another switch.


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