Deal of The Day! Hurry Up, Grab the Special Discount - Save 25% - Ends In 00:00:00 Coupon code: SAVE25
Welcome to Pass4Success

- Free Preparation Discussions

Juniper JN0-352 Exam - Topic 9 Question 3 Discussion

[Exhibit]Click the Exhibit button.You run the show ospf database command and you see a Router LSA marked with an asterisk.Referring to the exhibit, what is the significance of this result?
B) The LSA is advertised by the local device.
A) The LSA is advertised by a remote device.
C) The LSA is advertised by the designated router.
D) The LSA is advertised by the backup designated router.

Juniper JN0-352 Exam - Topic 9 Question 3 Discussion

Actual exam question for Juniper's JN0-352 exam
Question #: 3
Topic #: 9
[All JN0-352 Questions]

[Exhibit]

Click the Exhibit button.

You run the show ospf database command and you see a Router LSA marked with an asterisk.

Referring to the exhibit, what is the significance of this result?

Show Suggested Answer Hide Answer
Suggested Answer: B

In the output of show ospf database, Junos marks every self-originated link-state advertisement with an asterisk immediately preceding the LSA's link-state ID. A self-originated LSA is one that was created and flooded by the router on which the command is being executed, as opposed to an LSA that was received from and originated by a neighboring router elsewhere in the area. In this exhibit, the asterisked Router LSA has an ID of 10.101.100.0 and an Advertising Router value of the same 10.101.100.0, confirming that this particular Router LSA describes the local device's own links, area membership, and interface costs, and that the local router itself flooded this LSA into the area's link-state database. This distinction matters operationally because when troubleshooting OSPF topology or SPF calculation issues, engineers frequently need to isolate their own router's advertised state from the states advertised by every other router in the area; the asterisk provides an immediate, unambiguous visual cue for that separation without needing to cross-reference the router's own ID separately. It has no relationship to designated router or backup designated router status --- DR/BDR roles are indicated elsewhere in interface-level output, not through the asterisk convention in the LSA database dump, and a router that is neither DR nor BDR still self-originates and flags its own Router LSA the same way. Reference topics: Junos Enterprise Routing -- OSPF, Interpreting the OSPF Link-State Database.


Contribute your Thoughts:

0/2000 characters
Shad
3 days ago
Interesting! I didn't know the asterisk had that meaning.
upvoted 0 times
...
Timmy
8 days ago
Nope, it's definitely not from a remote device.
upvoted 0 times
...
Rickie
13 days ago
Wait, are we sure about that? I thought it could be from the designated router.
upvoted 0 times
...
Cyril
18 days ago
Totally agree, it's definitely local!
upvoted 0 times
...
Horace
23 days ago
Asterisk means it's from the local device.
upvoted 0 times
...
Stephaine
29 days ago
I’m pretty sure the asterisk means it’s from the local device, but I could be wrong. I should have reviewed that section more thoroughly.
upvoted 0 times
...
Theresia
1 month ago
This seems similar to a question we did in class about OSPF LSAs. I feel like it might be related to the designated router, but I can't recall the specifics.
upvoted 0 times
...
Lino
1 month ago
I think the asterisk indicates that the LSA is from the local device, but I might be mixing it up with another command we practiced.
upvoted 0 times
...
Mickie
1 month ago
I remember something about LSAs, but I'm not entirely sure what the asterisk means in this context.
upvoted 0 times
...

Save Cancel