OSPF - LSA Refresh Time

OSPF LSA Persistence with DNA flag

OSPF Understanding LSA Aging and Refreshing


The [OSPF](/ospf) [LSA](/ospf-lsa-types) maximum age time is a predefined time of 60 minutes (3600 seconds) that is defined within the OSFP RFC as MaxAge.  This is the maximum age an LSA can attain within the LSDB. After this interval, the LSA will be purged from the LSDB. The MaxAge time is reset every time an LSA is received.

The MaxAge along with the [LSRefreshTime](/ospf-lsa-refresh-time) value are integral parts of the OSPF LSA and LSDB flooding process.

## Links

https://networklessons.com/ospf/ospf-lsas-and-lsdb-flooding-tutorial/
https://datatracker.ietf.org/doc/html/rfc2328#page-217

OSPF - LSA Max Age

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OSPF - LSA Max Age

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