Introduction to Redistribution

Most networks you encounter will probably only run a single routing protocol like OSPF or EIGRP. Maybe you find some old small networks that are still running RIP that need migration to OSPF or EIGRP. What if you have a company that is running OSPF and you just bought another company and their network is running EIGRP?

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How to configure Route Tagging

When you configure multipoint redistribution it’s a good idea to use route tagging to prevent advertising something from routing protocol “A” into “B” and back into “A”.  Let me give you an example:

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Troubleshooting AD Redistribution

When it comes to redistribution, there are a lot of things that potentially could go wrong. Two possible issues are sub-optimal routing and routing loops. All redistribution problems boil down to two different issues:

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