Troubleshooting Redistribution - Troubleshooting IPv4 and IPv6 Redistribution
6 important questions on Troubleshooting Redistribution - Troubleshooting IPv4 and IPv6 Redistribution
What are 3 ways a Seed Metric can be defined, in order of preference?
- By applying a route map configuration to the redistribute command.
- By using the metric paramater with the redistribute command.
- By using the default-metric command.
What are the 4 main areas of troubleshooting Route Redistribution?
- Source Routing Protocol
Use the appropriate Show commands to ensure the Source Routing Protocol has learned the route you want to redistribute. - Route Selection
Ensure that the route from the Source Routing Protocol is actually in the Routing Table. - Redistribution Configuration
Check the Redistribution configuration. Things like: Metric, Route Filtering, Routing Process ID or AS number. - Destination Routing Protocol
Check characteristics of Destination Routing Protocol and if it treats external routes differently.
What is important to note about the default seed metric when redistributing into EIGRP?
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What is important to note about OSPFv2 redistribution?
What are important differences in OSPFv3 redistribution versus OSPFv2?
- The Include-Connected option is added
In OSPFv3 connected routes are not automatically redistributed. - The Subnet option is missing.
Classless and Classfull concepts does not exist in IPv6.
What things do you need to check when troubleshooting Redistribution with Route Maps?
- Is the correct Route Map applied?
- Is Permit or Deny specified correctly?
- If an access list is used in the match statement, is the access list correct?
- If there are Set statements, you need to verify that the correct values have been specified to accomplish your desired goal.
- If a route doesn't match any statement the route falls in the implicit deny and is not redistributed.
- If a nonexistent route map is attached to the redistribution command, none of the routes are redistributed.
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