I have currently configured priority queuing with high,medium,low and normal criteria matching accesslist on my serial interface connecting a remote site.
The current bandwidth on the serial LL is 1 Mbps, i would like to reduce the same to 512 Kbps.
In order to test that i would like to configure the interface with rate-limit.
If i apply rate-limit on the Serial interface for 512 Kbps whether priority queing will be effected after the traffic reaches 512 Kbps.
You should actually use a nested policy map, wherein the overall bandwidth is policed or shaped as per your needs
priority percent 20
shape average 512000 ---- you can also police
This would ensure your overall CAR still respecting priority for LLQ
HTH, rate if it does