Hello @Maivoko
To check delays and packet loss in an OSPF network, you can use the following commands:
show ip ospf interface: This command displays the OSPF configuration and interface status, including the interface's IP address, network type, and MTU. It also shows statistics such as the number of packets sent and received, along with errors and drops.
show ip ospf neighbor: This command displays the status of OSPF neighbors, including their IP address, priority, and state. It also shows the amount of time since the last hello packet was received and the amount of time until the next hello packet is expected.
show ip ospf database: This command displays the contents of the OSPF database, including the router's ID, the area it belongs to, and the LSAs it has received. It also shows the age of each LSA, the advertising router's ID, and the checksum.
To optimize the OSPF database, you can use the following methods:
Summarization: OSPF summarization reduces the number of LSAs in the database by combining multiple networks into a single route advertisement. This can significantly reduce the size of the OSPF database, which in turn reduces the memory and processing power required by OSPF routers.
ACLs can be used to filter OSPF route advertisements to prevent unnecessary routes from being added to the OSPF database. This can reduce the size of the OSPF database and improve routing performance.
Route filtering: Route filtering can be used to remove unnecessary routes from the OSPF database. This is done by configuring the router to only accept routes that meet certain criteria, such as those that match a particular prefix or have a certain metric value.
Best regards
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