The ip route prefix-priority-scheduler command sets the scheduling ratio of IPv4 routes by priority.
The undo ip route prefix-priority-scheduler command restores the scheduling ratio of IPv4 routes by priority to the default value.
By default, the scheduling ratio of IPv4 routes by priority is 8:4:2:1.
ip route prefix-priority-scheduler critical-weight high-weight medium-weight low-weight
undo ip route prefix-priority-scheduler
| Parameter | Description | Value |
|---|---|---|
| critical-weight | Specifies the scheduling weight value of a critical queue. | The value is an integer ranging from 1 to 10. |
| high-weight | Specifies the scheduling weight value of a high queue. | The value is an integer ranging from 1 to 10. |
| medium-weight | Specifies the scheduling weight value of a medium queue. | The value is an integer ranging from 1 to 10. |
| low-weight | Specifies the scheduling weight value of a low queue. | The value is an integer ranging from 1 to 10. |
Usage Scenario
With the integration of networks, it is strongly required that services be differentiated. Some routes may be used to guide the forwarding of key services such as Voice over IP (VoIP) services, video conference services, and multicast services. Carriers require the routes for key services to be converged more quickly than other routes. Therefore, the system needs to converge routes based on their convergence priorities to improve network reliability.
Different routes can be set with different convergence priorities, which can be critical, high, medium, and low listed in descending order. Critical is the highest convergence priority; low is the lowest convergence priority. The system converges routes based on the scheduling weights of convergence priorities proportionally to guide service forwarding.
To prevent network performance from being affected in case low-preference routes are not processed for a long time when a large number of high-preference routes are being processed, the ip route prefix-priority-scheduler command can be used to set the scheduling ratio of IPv4 routes by priority.