ASR border RPL policy marks DSCP on ISP ingress (IOS-XR) — authoritative classification point at campus edge. Procera appliance deployed as L2 bump-in-the-wire at security/distribution boundary: DSCP reader, not marker; provided per-ISP inbound utilization telemetry not otherwise visible at that boundary (retired 2023 during 100G deployment, Procera not rated for line rate). Telemetry fed manual BGP advertisement strategy across multihomed ISP peers: /16 split into subnet advertisement ratios per ISP to bias inbound load distribution without policy routing on the forwarding plane.