HPE7-A06 · Question #7
The customer is experiencing periodic uplink congestion between campus-1's AGG-1 and core. This has been negatively affecting voice communications. The VoIP phones edge mark packets with DSCP EF. The
The correct answer is A. qos schedule-profile 8QDwrwStrict dwr queue 0 weight 1 dwr queue 1 weight 1 dwr queue 2 weight 1 dwr queue 3 weight 1 dwr queue 4 weight 1 dwr queue 5 weight 1 dwr queue 6 weight 1 strict queue 7 max-bandwidth 500000 exit interface lag 1 apply qos schedule-profile 8QDwrwStrict exit policy voip_policy 10 class ip voip_class action local-priority 7 exit. The policy already classifies VoIP traffic (DSCP EF) and sets local-priority 6. To ensure reliable forwarding during congestion, that traffic must be mapped into a strict priority queue on the uplink (LAG1). Script A configures queue 7 as a strict priority queue with a bandwidth
Question
The customer is experiencing periodic uplink congestion between campus-1’s AGG-1 and core. This has been negatively affecting voice communications. The VoIP phones edge mark packets with DSCP EF. The uplink from AGG-1 to core is LAG1. The customer has already configured the following class and policy on AGG-1:
Based on this policy, which script, when deployed on AGG-1, will improve the reliable forwarding of voice traffic between AGG-1 and its uplink to the core? A. B. C. D.
Exhibits
Options
- Aqos schedule-profile 8QDwrwStrict dwr queue 0 weight 1 dwr queue 1 weight 1 dwr queue 2 weight 1 dwr queue 3 weight 1 dwr queue 4 weight 1 dwr queue 5 weight 1 dwr queue 6 weight 1 strict queue 7 max-bandwidth 500000 exit interface lag 1 apply qos schedule-profile 8QDwrwStrict exit policy voip_policy 10 class ip voip_class action local-priority 7 exit
- Bqos schedule-profile 8QDwrwStrict dwr queue 0 weight 1 dwr queue 1 weight 1 dwr queue 2 weight 1 dwr queue 3 weight 1 dwr queue 4 weight 1 dwr queue 5 weight 1 strict queue 6 max-bandwidth 400000 dwr queue 7 weight 5 interface lag 1 apply qos schedule-profile 8QDwrwStrict exit policy voip_policy 10 class ip voip_class action local-priority 7 exit
- Cqos schedule-profile 8QDwrwStrict dwr queue 0 weight 1 dwr queue 1 weight 1 dwr queue 2 weight 1 dwr queue 3 weight 1 dwr queue 4 weight 1 dwr queue 5 weight 1 strict queue 6 max-bandwidth 300000 strict queue 7 exit apply qos schedule-profile 8QDwrwStrict
- Dqos schedule-profile 8QDwrwStrict dwr queue 0 weight 1 dwr queue 1 weight 1 dwr queue 2 weight 1 dwr queue 3 weight 1 dwr queue 4 weight 1 dwr queue 5 weight 1 strict queue 6 max-bandwidth 500000 dwr queue 7 weight 1 apply qos schedule-profile 8QDwrwStrict
How the community answered
(51 responses)- A59% (30)
- B24% (12)
- C6% (3)
- D12% (6)
Explanation
The policy already classifies VoIP traffic (DSCP EF) and sets local-priority 6. To ensure reliable forwarding during congestion, that traffic must be mapped into a strict priority queue on the uplink (LAG1). Script A configures queue 7 as a strict priority queue with a bandwidth limit, and applies the schedule profile to LAG1, ensuring voice traffic is dequeued before other traffic. This guarantees low latency and jitter for VoIP.
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