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Traffic Shaping & Quotas w/Cisco's SCE Presenters: Chris White – Oregon State University Karl Vollmer – Oregon State University Chris Giem – Oregon State University • • • • • Background & History Implementation & Configuration Network Architecture Future Plans Questions Oregon State University Corvallis, Oregon • 19,500 total students • 15,900 undergrads • 3,700 on-campus residents supported by ResNet • OSU Public Wireless network for all student, staff, & faculty Shaping History • Problems: network saturation, bandwidth abuse, copyright infringement • Packeteer Packetshaper 6500 was the perfect solution for ResNet • Enabled ResNet to implement bandwidth shaping, quotas, & block hard-coded IPs • Thinking ahead: more speed, what will our problems be, how to solve them Our Savior • Found Cisco SCE 2000 (service control engine) • • • • • (2) 1Gb/s Subscriber interfaces (2) 1Gb/s Network interfaces No hard drives to fail, configuration separated from device Zero downtime for policy & firmware updates Less expensive then comparable Packeteer PS Whahh!? The Cisco box is less expensive?! Packeeter Hardware Configuration Network Devices • Packeeter 6500 – (1) 100Mb/s Subscriber Interface – (1) 100Mb/s Network Interface – Web Interface, Data collection (HDD) Servers • Collection Manager – Integrated into Network Device • Subscription Manager – N/A • Quota Manager – N/A SCE Hardware Configuration Network Devices • SCE 2000 – (2) 1Gb/s Subscriber interfaces – (2) 1Gb/s Network interfaces – (2) 100Mb/s management interfaces Servers • Collection Manager – Redhat Enterprise server (MySQL) • Subscription Manager – Redhat Enterprise server (SM service) • Quota Manager – Redhat Enterprise server (QM service) SCE Policy Hierarchy SCE Policy Hierarchy ResNet Policy Configuration Global Rules • • • • 62.5 Mb/s Total Commodity 5Mb/s (in) 2.5Mb/s (out) Bittorrent 1Mb/s P2P 1Mb/s Newsgroups Subscriber Rules • • • • Highest Priority Gaming Lowest Priority P2P, Bittorrent, Newsgroups 400Kb/s Bittorrent 92Kb/s VOIP User & Quota Tracking Packeeter 6500 • (2) Servers – Traffic monitoring of 2300 IP’s per server – In house Python script for user quota and tracking – Update of rate limited, blocked users once per min SCE 2000 • (1) Server [ Currently not in Production] – Subscription manager & Quota Manager managing ~10,000 IP’s – In house C++ application leveraging Cisco API for subscriber to IP mappings – Update of rate limited users once every ~15 seconds SCE Graphs of Shaped Traffic Switch Interface Statistics Future Development Plans Subscription Manager • Web Interface – Manual Addition of subscribers – Bulk Modification of current subscribers – Reporting Tools and Statistical Information Quota Manager • Web Interface – Manual Reset of subscriber quota – Bulk Modification of subscriber quota – Reporting Tools and Statistical Information Cisco SCE 2000 http://cisco.com/en/US/products/ps6151/ Cisco SCE 1000 http://cisco.com/en/US/products/ps6150/ Presentation Evaluations http://resnetsymposium.org/resnet2007/