OSPF - Stub areas and allowed LSAs
Type: #OSPF #stub #LSA
The following table indicates what OSPF LSA Types are allowed within OSPF stub areas of different types:
LSA/Area | Normal | Stub | Totally Stub | NSSA | Totally NSSA |
---|---|---|---|---|---|
1 | ✓ | ✓ | ✓ | ✓ | ✓ |
2 | ✓ | ✓ | ✓ | ✓ | ✓ |
3 | ✓ | ✓* | -* | ✓ | -* |
4 | ✓ | - | - | - | - |
5 | ✓ | - | - | - | - |
7 | - | - | - | ✓* | ✓ |
'*' indicates a default route LSA type
Links:
https://networklessons.com/ospf/introduction-to-ospf-stub-areas
https://networklessons.com/ospf/ospf-lsa-types-explained
https://community.cisco.com/t5/routing/which-ospf-areas-prevent-lsa-type-4-lsa-type-5/td-p/3825302