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Using Spirent TestCenter, why are the OSPF interfaces flapping when running Jumbo traffic?

Answer

Symtom: OSPF ports going up and down while traffic is being sent, CPU on DUT is at 100% utilization.

  1. Capture frames, if fragmented, check MTU setting on all interfaces. Reset the MTU so it's larger than the traffic being transmitted. 

  2. Check to see if there are any virtual interfaces on DUT. Reset the MTU so it's larger than the traffic being transmitted.

 


Product : CV,Vulnerability,Routing,L2-3,Windows GUI,OSPF