JN0-102 · Question #232
When attempting to view the OSPF routes in the routing table, you issue the command show route table inet.3 but no OSPF routes are displayed. What is the problem?
The correct answer is B. The OSPF routes are located in the inet.0 routing table. Standard OSPF routes for IPv4 unicast traffic are located in the inet.0 routing table, not the inet.3 table, which is reserved for MPLS LSP routes.
Question
When attempting to view the OSPF routes in the routing table, you issue the command show route table inet.3 but no OSPF routes are displayed. What is the problem?
Options
- AThe OSPF routes are located in the inet4.0 routing table.
- BThe OSPF routes are located in the inet.0 routing table.
- CThe OSPF routes are located in the inet.2 routing table.
- DThe OSPF routes are located in the inet4.3 routing table.
How the community answered
(26 responses)- A12% (3)
- B81% (21)
- C4% (1)
- D4% (1)
Why each option
Standard OSPF routes for IPv4 unicast traffic are located in the `inet.0` routing table, not the `inet.3` table, which is reserved for MPLS LSP routes.
`inet4.0` is not a standard Juniper OS routing table name for IPv4 unicast routes; the correct name is `inet.0`.
OSPF, as a standard IPv4 unicast routing protocol, installs its best paths into the `inet.0` routing table, which is the default routing table for all IPv4 unicast routes. The `inet.3` table is specifically used for MPLS Label Switched Path (LSP) routes, not for standard OSPF prefixes.
The `inet.2` routing table is used for MPLS unicast paths related to BGP-LU or LDP-LU prefixes, not for general OSPF routes.
`inet4.3` is not a standard Juniper OS routing table name; the table for MPLS LSP routes is `inet.3`.
Concept tested: Juniper routing table types
Source: https://www.juniper.net/documentation/us/en/software/junos/routing-overview/topics/topic-map/routing-tables-understanding.html
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