JN0-637 · Question #41
You have configured a CoS-based VPN that is not functioning correctly. Referring to the exhibit, which action will solve the problem?
The correct answer is D. You must delete one forwarding class. The issue in the CoS (Class of Service) configuration as shown in the exhibit lies in the number of forwarding classes mapped to DSCP code points. In Junos OS, the DSCP BA (Behavior Aggregate) classifier can only map up to six forwarding classes per classifier. Referring to the…
Question
You have configured a CoS-based VPN that is not functioning correctly. Referring to the exhibit, which action will solve the problem?
Exhibit
Options
- AYou must change the loss priorities of the forwarding classes to low.
- BYou must change the code point for the DB-data forwarding class to 10000.
- CYou must use inet precedence instead of DSCP.
- DYou must delete one forwarding class.
How the community answered
(33 responses)- A12% (4)
- B9% (3)
- C3% (1)
- D76% (25)
Explanation
The issue in the CoS (Class of Service) configuration as shown in the exhibit lies in the number of forwarding classes mapped to DSCP code points. In Junos OS, the DSCP BA (Behavior Aggregate) classifier can only map up to six forwarding classes per classifier. Referring to the exhibit: There are seven forwarding classes: (and one implied by the error - possibly a misconfigured or additional one) Therefore, the correct solution is: You must delete one forwarding class. This action will bring the configuration within the limit of six forwarding classes per DSCP BA classifier, resolving the CoS-based VPN issue.
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