Each OSPF router runs the SFP algorithm to calculate the best routes and adds them to the routing table. Routers running OSPF need to establish a neighbor relationship before exchanging routing updates.
It uses the multicast address of 224.0.0.5 and 224.0.0.6 for communication between OSPF-enabled neighbors It uses costas the parameter for determining route metric. OSPF has a default administrative distance of 110. It is an open standard, so it can be run on routers from different vendors. It is perhaps one of the most popular link state routing protocols. Open Shortest Path First(OSPF) is one of the dynamic routing protocols amongst others such as EIGRP, BGP and and RIP. But just before we get to configure, let’s have an overview of OSPF.
Welcome ! This tutorial will give you an easy guide of configuring basic OSPF on a Cisco Router.
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