I have a question about database synchronization process in ospf When slave receives DD packet from master,what does it fill in the response packet.Does it leave DD packet untouched or fill in its own LSA header.If slave leaves DD packet untouched,how can master get slave's link state database synchronized.Otherwise,if slave's database is larger than master's.When master sends last DD packet,slave responds it and sets M bits to zero.Slave doesn't send DD packet any more,and slave's rest database information may be lost. Anyone can explain for me? _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]