Category Archives: Routing

OSPF (Open Shortest Path First)

OSPF have its own protocol number 89. OSPF OSPF is a link state protocol it exchanges detailed topology information within a area and only summary out of the area. OSPF uses Dijkstra algorithm. Each device running will apply Dijkstra algo … Continue reading

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BGP(Border Gateway Protocol)

BGP uses TCP port 179. Difference between eBGP and iBGP: eBGP have AD of 20 and iBGP have AD of 200. In eBGP nexthop get changed whereas in case of iBGP nexthop doesn’t changes. Route receieved from one eBGP peer … Continue reading

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