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Spirent TestCenter: How does Spirent TestCenter select the source ports for ALP and EL4-7 tests?

  • Spirent TestCenter.
  • Enhanced L4-7.
  • Application Layer Protocols.
Spirent TestCenter - Application Layer Protocols
The port range is from 49152-65535; the stack determines the selected port, and the user has no control over it.  Randomized source port allocation only happens for low connections per second. If more than ten connections are opened in a second, the stack will switch to sequential source port allocation.
Spirent TestCenter - Enhanced L4-7
The port range is user-configurable, and the WebUI has it under the network option. Please refer to the screenshot below.
The port increment is sequential and gets reset to the lower bound and repeated only when the upper bound is hit.

Product : L4-7,Spirent TestCenter,ALP