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Port Mirroring Not Capturing Traffic On MLT Running LACP

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TitlePort Mirroring Not Capturing Traffic On MLT Running LACP
Symptoms
  • Two instances of port mirroring configured
#mirror-by-port 1 in-port 1/31 out-port 1/8,1/12,1/13,1/14 mode both enable
#mirror-by-port 2 in-port 1/32 out-port 1/47 mode both enable
  • Port 1/47 is member of MLT with LACP configured
  • No traffic is seen while capturing on port 1/32 with PC
Environment
  • VSP 4000
  • VSP 7200
  • VSP 8200/8400
  • VSP 8600
  • All supported VOSS releases
Cause
  • Product functioning as designed
  • Hardware limitation of 4 mirroring ports
  • Each mirroring direction counts as 1
  • First mirroring instance already exceeded the hardware limit
Resolution
Total number of mirroring ports must be less than/equal to 4
Additional notes
For additional information, please review page 32 in Troubleshooting VSP Operating System Software

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