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Spirent TestCenter, why interface MTU must the same between STC and DUT in OSPF DBD packet?

Environment/Versions
  • SPIRENT TESTCENTER
  • OSPF
Answer
  1. OSPF checks whether neighbors are using the same MTU on a common interface.
  2. This check is performed when neighbors exchange Database Descriptor (DBD) packets.
  3. If the interface MTU is not match, OSPF will stay "ExStart" status always.

Product : Spirent TestCenter,OSPF