I want to know which device initiates the data exchange in OSPF protocol (master device or slave device).
1 Answer
From "OSPF version 2" RFC 2328
During the Hello phase, every router sends packets:
Hello packets are sent periodically out all router interfaces. (section 7.1)
During database synchronisation, the master leads:
Database Description Packets sent by the master (polls) are acknowledged by the slave (section 7.2)