The multi-interface priority-of-link-quality parameter command sets the delay accuracy and jitter accuracy when the intelligent uplink selection mode is load sharing based on link quality.
The undo multi-interface priority-of-link-quality parameter command restores the delay accuracy and jitter accuracy to the default values. The default values are both 1 ms.
multi-interface priority-of-link-quality parameter { delay accuracy delay-accuracy | jitter accuracy jitter-accuracy }
undo multi-interface priority-of-link-quality parameter { delay accuracy | jitter accuracy }
| Parameter | Description | Value |
|---|---|---|
| delay-accuracy | Indicates the delay accuracy. |
The value is an integer ranging from 1 to 5000, in ms. The default value is 1 ms. |
| jitter-accuracy | Indicates the jitter accuracy. |
The value is an integer ranging from 1 to 5000, in ms. The default value is 1 ms. |
When the intelligent uplink selection mode is load sharing based on link quality, if links have the same packet loss ratio but different delays and jitters, the bandwidth of outgoing interfaces is uneven. Interfaces with less bandwidth but better quality are easy to congest.
To resolve this problem, you can run the multi-interface priority-of-link-quality parameter { delay accuracy delay-accuracy | jitter accuracy jitter-accuracy } command to adjust the delay and jitter accuracy, so that the links with similar delay and jitter values are calculated with equal-cost quality results. In this manner, traffic can be distributed among the links based on the interface bandwidth proportion.
The FW adjusts the delay or jitter value based on the delay or jitter accuracy and then uses the adjusted delay or jitter to calculate link quality.
Adjusted delay = Actual delay - Actual delay%Delay accuracy; Adjusted jitter = Actual jitter - Actual jitter%Jitter accuracy (A%B indicating the remainder of dividing A by B)
For example, the delay accuracy is set to 10 ms, the delay of link A is 15 ms, and the delay of link B is 11 ms. When calculating link quality, the FW adjusts the delay of link A to 15 - 15%10 (10 ms) and adjusts the delay of link B to 11 - 11%10 (10 ms) based on the accuracy. The result is that the two links are of the same quality.