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Juniper JN0-351: Why Are Static Routes Not Redistributed into BGP?

Discover why static routes fail to redistribute into BGP in this Juniper JN0-351 certification exam question. Learn about the importance of a valid next hop for successful route redistribution.

Table of Contents

Question

user@router> show route 
inet. 0: 13 destinations, 14 routes (13 active, 0 holddown, 0 hidden) 
+ = Active Route, - = Last Active, * = Both 
0.0.0.0/0 *[Static/5] 9w0d 02:07:24
> to 10.1.1.254 via xe-0/0/0. 0 
10.1.1.0/24 *[Direct/0] 9w0d 02:07:24
> via xe-0/0/0.0 
10.16.0.0/24 *[Direct/0] 9w0d 02:07:24
> via xe-0/0/2.0 
10.123.255.64/26 *[Static/5] 9w0d 02:07:24 
> via xe-0/0/2.0 
172.16.0.0/24 *[Direct/0] 9w0d 02:07:24
> via xe-0/0/3.0

You want to redistribute the static routes into BGP, but they do not show as BGP routes.

What causes this result to occur?

A. The static routes do not have a valid next hop.
B. The as-path parameter must be specified.
C. A community string must be configured.
D. The no-readvertise feature is specified.

Answer

When redistributing static routes into BGP, it’s essential to ensure that the static routes have a valid next hop. In the given scenario, the static routes are not showing up as BGP routes after the redistribution attempt.

The correct answer is:
A. The static routes do not have a valid next hop.

Explanation

For successful redistribution of static routes into BGP, the static routes must have a valid next hop. The next hop is crucial because it determines where the traffic should be forwarded. If the next hop is invalid or unreachable, the static routes will not be redistributed into BGP.

The other options provided are incorrect:
B. The as-path parameter is not a requirement for redistributing static routes into BGP.
C. A community string is not necessary for redistributing static routes into BGP.
D. The no-readvertise feature prevents routes from being advertised to other BGP peers, but it does not affect the redistribution of static routes into BGP.

In summary, for static routes to be successfully redistributed into BGP, they must have a valid and reachable next hop. Without a valid next hop, the static routes will not appear as BGP routes after the redistribution process.

Juniper JN0-351 certification exam assessment practice question and answer (Q&A) dump including multiple choice questions (MCQ) and objective type questions, with detail explanation and reference available free, helpful to pass the Juniper JN0-351 exam and earn Juniper JN0-351 certification.