I just went back and reviewed the material from Cisco Live, and the stated goal of "reverse ingress shaping" (as Cisco calls it) is to protect critical UDP traffic (e.g. VoIP) from TCP congestion by creating effectively an inbound priority queue. You shape inbound TCP traffic to 85-95% of the link speed to protect VoIP calls at teleworker locations (or other sites where you don't have ISP-provided QoS).
At least from the data shown, this is effective at preventing latency/jitter in the UDP traffic. The presenter covered different tests at 85%, 90%, etc. and the effects on UDP traffic. I probably shouldn't share the PDF or audio of the session, but if you have Cisco Live Virtual account I would definitely recommend checking out "BRKRST-3500: Designing Multipoint WAN QoS" B* -- Brian C Landers http://www.packetslave.com/ CCIE #23115 (R&S + Security) _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
