To keep it in mind :
OSPF adjacencies only form over primary networks, not secondary networks.
Source : http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094050.shtml
2 cents OSPF tips
To keep it in mind :
OSPF adjacencies only form over primary networks, not secondary networks.
Source : http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094050.shtml