There are times when it may seem that EIGRP is either not advertising the networks that it has been configured to advertise or is advertising networks that it has not been configured to advertise. For the most part, such issues are typically due to router and switch misconfigurations. There are several reasons why EIGRP might not advertise a network that it has been configured to advertise. Some of these reasons include the following:
- Distribute lists (outside CCNA syllabus)
- Split horizon
- Summarisation
Incorrectly configured distribute lists are one reason why EIGRP might not . . .
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