SD-WAN QOS
Queues
SD-WAN has 8 queues.
Queue 0
- Cannot be disabled
- LLQ
- Control Traffic
- OMP, BFD
Queue 2
The default queue.
If QoS is not configured, all user traffic will take Queue 2.
Queue example
policy
class-map
class CL_REAL_TIME queue 0
class CL_CRITICAL_DATA queue 1
class CL_BEST_EFFORT queue 2
Tables
Example Class List to Queues
| Class | Queue | Method |
|---|---|---|
| LLQ (Voice) | 0 | LLQ |
| CRTICAL_DATA | 1 | WRR |
| BULK | 2 | WRR |
| CLASS_DEFAULT | 3 | WRR |
| INTERACTIVE_VIDEO | 4 | WRR |
| CONTROL SIGNALING | 5 | WRR |
| Unused | 6 | WRR |
| Unused | 7 | WRR |
Example Bandwidth and Buffer Values
| Queue | Bandwidth | Buffer | Drops |
|---|---|---|---|
| 0 | 10 | 10 | Tail Drop |
| 1 | 30 | 30 | Random Early (RED) |
| 2 | 10 | 10 | Random Early (RED) |
| 3 | 20 | 20 | Random Early (RED) |
| 4 | 20 | 20 | Random Early (RED) |
References
Cisco - Forwarding and QoS Configuration Guide for vEdge Routers, Cisco SD-WAN Release 20