Configure Port Mirroring
Before you begin
To change a port mirroring configuration, first disable mirroring.
About this task
Use port mirroring to aid in diagnostic and security operations.
Use port mirroring to make a copy of a traffic flow and send that copy to a device for analysis, for example, for diagnostic sniffing. Use the mirror to see the packets in the flow without breaking into the physical connection to place a packet onto the sniffer inline. You can also use port mirroring for security. You can send flows to inspection engines for post processing.
Connect the sniffer (or other traffic analyzer) to the output port you specify in this procedure.
Procedure
Port Mirrors Field Descriptions
Use the data in the following table to use the Port Mirrors tab.
Name |
Description |
---|---|
Id |
Specifies an assigned identifier for the configured port mirroring instance. |
MirroredPortList |
Specifies a port to be mirrored (the source port). |
Enable |
Enables or disables this port mirroring instance. The default value is Enable. |
Mode |
Specifies the traffic direction of the packet being mirrored:
The default is rx. |
MirroringPortList |
Specifies a destination port (the port to which the mirrored packets are forwarded). Configures the mirroring port. |
MirroringMltId |
Specifies the destination MultiLink trunking ID. |
MonitoringIsidOffset |
Used to configure the monitoring I-SID offset value. The offset ID is mapped to the actual monitor I-SID value to which the packets are mirrored. |
MonitoringIsid |
Specifies the actual monitor I-SID value to which the packets are mirrored. |
MirroringQos |
Used to define the Quality of Service (QoS) profiles for the mirrored packet into monitoring I-SID. |