David’s Cisco Networking Blog:



September 23, 2008  6:48 AM

When to prefer Open Shortest Path First (OSPF) route over an EIGRP route

Posted by: David Davis
Cisco, Networking, OSPF, Routing

The shortest path between two points is always a straight line or in this case it’s the administrative distance. OSPF has an administrative distance of 110 while EIGRP has only 90. Therefore, EIGRP would be picked because of its lower administrative cost. If you want to use OSPF over EIGRP,...

August 24, 2008  9:15 PM

Four OSPF Router designations and their responsibilities

Posted by: David Davis
Cisco, OSPF

OSPF Routers have different responsibilities depending on their position and functionality.  Let's look at them- The Internal Router – This router exists within an area. It’s responsible for maintaining a current and accurate database of every subnet within an area . It’s...

August 20, 2008  5:14 AM

Four show commands to Verify the OSPF configuration

Posted by: David Davis

show ip ospf – provides information about the OSPF process and its details. show ip ospf database – provides information about the contents of the topological database. show ip ospf interface – provides information on how OSPF has been...


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