hown in the exhibit, where would you apply a policy containing the parameter local-preference 110 to accomplish this task?

— Exhibit –

— Exhibit —
Click the Exhibit button.
R4 receives BGP prefixes for AS 50 from both R2 and R3. You want to ensure that R4 chooses
R3 as the preferred path to reach 50.50.50/24.
Referring to the information shown in the exhibit, where would you apply a policy containing the
parameter local-preference 110 to accomplish this task?

— Exhibit –

— Exhibit —
Click the Exhibit button.
R4 receives BGP prefixes for AS 50 from both R2 and R3. You want to ensure that R4 chooses
R3 as the preferred path to reach 50.50.50/24.
Referring to the information shown in the exhibit, where would you apply a policy containing the
parameter local-preference 110 to accomplish this task?

A.
on R3, as import from R1

B.
on R3, as export towards R4

C.
on R2, as import from R1

D.
on R2, as export towards R4



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d

d

higher local preference of 110 should be places on R3 as an export towards R4?

Rico

Rico

A is correct because LP is per AS ?

Marius

Marius

No, San is right, LP can be used as export only.

brice

brice

B is correct

A would change the result also for R2 which is not requested.

test

test

A and B both are correct.
Local Preference can also be applied for incoming prefix using import policy.

dgubin

dgubin

In case of A traffic from R4 to 50.50.50/24 may use R4-R2-R3 path (it depends).
So the correct answer is B