As is the case with EIGRP, there may be times when notice that OSPF is not advertising certain routes. For the most part, this is typically due to some misconfigurations versus a protocol failure. Some common reasons include the following:
- OSPF Is Not Enabled on the Interface(s)
- The Interface(s) is/are down
- Interface Addresses in a Different Area
- OSPF Misconfigurations
A common reason why OSPF does not advertise routes is that the network is not advertised via OSPF. In current Cisco IOS versions, networks can be advertised using . . .
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