Spirent TestCenter: Link is not coming up between two EDM-2003B ports


Doc ID    KNI15897
Version:    1.0
Status:    Published
Published date:    01/02/2020
 

Symptoms

  • There is an intermediate device (e.g., network tap) inline between two STC (Spirent TestCenter) ports but links are not coming up.
  • When one end is connected to a switch (versus to the other STC port), link comes up.

Environment

  • Spirent TestCenter
    • v5.00
    • EDM-2003B 

Explanation/Resolution

  • The EDM-2003B modules do not support Auto-MDIX and so a straight through ethernet cable will not link up.
  • Switches, on the other hand, typically support Auto-MDIX and so the same straight through cable will link up.
Resolution
  • use a cross over ethernet cable on one side of the intermediate device
         STC port 1 <--- cross over ---> tap <--- straight through ---> STC port 2

Root Cause

  • missing feature on an older 1G module

Find Answers

Specified Languages
English
中文

Please Sign In

Username
Password

Did you forget your password?
Click here for assistance

New user? Start here.