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Legacy Open Mesh: Switches: Port Mirroring

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This article describes how to configure port mirroring on Open Mesh Switches.

Environment:

  • Open Mesh Switches

Description

Port mirroring sends copies of packets seen on one or more ports to another port of a switch. Network administrators commonly use port mirroring to collect and analyze data on active networks and to diagnose or debug issues.

  • All Open Mesh Switches support port mirroring.
  • You can have up to four active, concurrent mirroring sessions on any single switch.
  • You can use mirroring sessions in conjunction with Link Aggregation to mirror traffic from a LAG into another port for analysis.

Procedure

Navigation

1. Navigate to ManageSwitches and select a switch. 

2. Click Port Settings.

mceclip0.pngFigure 1: Port settings

Mirroring Ports

1. Select the source and destination ports by checking the boxes on the left-most column of the specific ports.

mceclip2.pngFigure 2: Port selection

2. Click Mirror.

mceclip3.pngFigure 3: The Mirror button

3. Select which port you want the traffic to be mirrored from in the Destination ID drop-down. Other ports will automatically become sources.

mceclip4.pngFigure 4: Destination Port ID.

4. On each source port, specify whether it will transmit Tx only, Rx only, or both types of traffic.

mceclip5.pngFigure 5: Source port IDs & transmission types

5. Click OK. The port's mirror status will display in the Mirroring column under the Port Settings. Each session will be color-coded.

mceclip6.pngFigure 6: Two mirroring sessions 

Unmirroring Ports

1. Select the checkbox next to a mirror port. You can select multiple ports at a time.

mceclip7.pngFigure 7: Selecting ports

2. Click Unmirror.

mceclip9.pngFigure 8: The Unmirror button

 3. A dialog box will appear. Click OK.

mceclip10.pngFigure 9: Dialog prompt for removing ports

Important considerations

  • If you unmirror the destination port, the entire mirror session is torn down. 
  • If you unmirror any port in a two-port mirror, the entire mirror session will be torn down.
  • You cannot mirror ports that are also being aggregated with each other.
  • You can mirror one or more ports of an aggregation into a port that is not part of an aggregate group.

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