CCNA Routing & Switching : OSPF Seven Stages

• OSPF stand for Open Shortest path first
• OSPF is an open standard routing protocol that’s been implemented by a wide variety of network vendors, including Cisco
• It’s a link state protocol
• OSPF works by using the Dijkstra algorithm , First, a shortest path tree is constructed, and
• Then the routing table is populated with the resulting best paths.
• Unlimited hop count
• Metric is cost (cost=10 ^8/B.W.)
• Administrative distance is 110
• It is a classless routing protocol
• It supports VLSM and CIDR

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