JN0-102 · Question #358
Which two statements describe the default behavior for OSPF? (Choose two)
The correct answer is C. OSPF imports all routes into the inet.0 routing table. D. OSPF does not export static routes into the OSPF database. By default, OSPF imports all learned routes into the inet.0 routing table and does not automatically export static routes into its OSPF database.
Question
Which two statements describe the default behavior for OSPF? (Choose two)
Options
- AOSPF imports all routes into the inet4.0 routing table.
- BOSPF exports all static routes into the OSPF database.
- COSPF imports all routes into the inet.0 routing table.
- DOSPF does not export static routes into the OSPF database.
How the community answered
(25 responses)- A4% (1)
- B4% (1)
- C92% (23)
Why each option
By default, OSPF imports all learned routes into the `inet.0` routing table and does not automatically export static routes into its OSPF database.
`inet4.0` is not the standard primary IPv4 routing table name on Juniper devices; `inet.0` is.
OSPF requires explicit routing policy configuration to export static routes into its OSPF database, it does not do so by default.
OSPF, by default, populates all routes it learns into the `inet.0` routing table, which is the primary IPv4 unicast routing table on Juniper devices.
Without explicit configuration through routing policies, OSPF does not, by default, redistribute static routes from the routing table into its own OSPF database for advertisement to other OSPF neighbors.
Concept tested: Default OSPF import/export behavior
Source: https://www.juniper.net/documentation/us/en/software/junos/routing-protocols/topics/topic-map/ospf-configuration-basic.html
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