OSPF

OSPF (OPEN SHORTEST PATH FIRST)

1:OPEN STANDARD PROTOCOL
2:USES SPF(SHORTEST PATH FIRST) MECHANISM FOR ROUTING (DIJKSTRA ALGORITHM)
3:AD=110
4:USES COST METRIC
5:LINK STATE PROTOCOL (LINK COUNT)
(TRUE LINK STATE PROTOCOL)
COST=10^8/BANDWIDTH

6:USES TRIGGRED UPDATE
7:CONVERGENCE IS FAST BUT NOT FAST AS EIGRP
8:VLSM SUPPORTED
9:USES AREA'S
DIVIDE A LARGE INTERNETWORK INTO SMALLER AREA'S

DR=DESIGNATED ROUTER (HIGHEST IP)

BDR=BACKUP DESIGNATED ROUTER (SECOND HIGHEST IP)

ABR=AREA BORDER ROUTER

ASBR=AUTONOMOUS SYSTEM BORDER ROUTER

LSA (LINK STATE ADVERTISEMENT)

TOPOLOGY TABLE
ROUTING TABLE

SUCCESOR
PREDECESSOR

SINGLE AREA 0