Subscriber Services: ANCP agents for SDSL, VDSL & VDSL2 subscriber lines

You can configure the Access Node Control Protocol (ANCP) agent to provide two independent, adjusted values to CoS for downstream subscriber traffic on frame mode DSL types (SDSL, VDSL, and VDSL2), enabling CoS to more accurately adjust the effective shaping rate for the downstream subscriber traffic. You can specify a percentage value that is applied to the actual, unadjusted data rate received in ANCP Port Up messages. You can also specify a number of bytes that is added to or subtracted from the frame overhead for the traffic.

To adjust the received values, first include the qos-adjust statement at the [edit protocols ancp] hierarchy level to enable the ANCP agent to report values to CoS. Then include one or more of the following statements at the [edit protocols ancp qos-adjust] hierarchy level to specify a percentage adjustment value: sdsl-overhead-adjust, vdsl-overhead-adjust, or vdsl2-overhead-adjust. To adjust the frame overhead, include one or more of the following statements at the same hierarchy level: sdsl-bytes, vdsl-bytes, or vdsl2-bytes. Use the show ancp cos command to view the adjustment configuration and the last updated values sent to CoS. The show class-of-service interface interface-name command displays the adjusted rate and overhead values CoS has received from the ANCP agent.