From the course: Advanced Cisco Routing: OSPF

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Troubleshooting OSPF

Troubleshooting OSPF - Cisco Routers Tutorial

From the course: Advanced Cisco Routing: OSPF

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Troubleshooting OSPF

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- [Instructor] When troubleshooting ospf, one of the challenges that you might encounter is how to identify which router is which. Say for example I'll run the command show space ip space ospf neighbor. Here, you can see the neighbor IDs. But which one is that? Well to be fair, it's actually a bit easy with our example cause we only got a few routers per area. But imagine if you have multiple routers to manage. For that matter, it is a good practice to configure the ospf Router ID. As a review, the router ID is used to identify the router to its neighbors and it's set to the highest loopback interface ip address or physical interface ip address by default. To configure the router IDs, we'll use the command router-id space id where the router ID is in ip address format. The key thing to note is that after you configure the router ID, you will need to reload or use the clear ip ospf process command for the…

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