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Spirent TestCenter: Comparing Tx and Rx to verify DUT changed a value.

Objective/Summary
  • DSCP Verify
  • Diffserve Verify
  • CoS Verify
  • ToS Verify
Environment/Versions
  • The information provided is for the full Diffserv/ToS byte value.
Procedure
  1. Configure analyzer filter
  2. Create a DRV
    • Expand the StreamBlock Counter in the columns tab.
    • Select the columns you want and also add 16-bit analyzer filter #4 which is under the StreamBlock Basic Counters
    • Select the Config tab and add the IPv4 Header.ToS/Diffserv 
    • Create a Custom Property by clicking on the green plus sign
      • Select the 16-bit analyzer filter #4 which is under the StreamBlock Basic Counters
      • Select ==
      • Select the Config tab and add the IPv4 Header.ToS/Diffserv
      • Select expression type boolean
  3. Stream was configured to send diffserv byte value of D2 which is 210 decimal.
    • The comparison shows Tx and Rx is 210 so the Verify is True

Product : Spirent TestCenter,PGA