CPR and GAMMON Deployment Experiences. Warren Matthews Georgia Institute of Technology.

Office of Information Technology 2 Georgia Tech Campus –Backbone group maintain 180 buildings, 1700 switches, ports. Southern Crossroads gigapop (SOX) –Provides connectivity for 20+ Universities throughout the South East –10Gbps link to Abilene backbone.

Office of Information Technology 3Motivation Measurement Infrastructure typically means WAN monitoring –But problems are LAN and host based Network Operations –Single point of view –Catastrophic failure is easier to detect –Little quantitative data to troubleshoot performance problems

Office of Information Technology 4CPR Campus-wide Network Performance Monitoring and Recovery 50+ hosts on Campus –Collocated with switches in data closets –Multiple views of the network –Especially the users view Regular tests across campus network

Office of Information Technology 5 Gateway Routers NISI Rich DMSmith Lyman Skiles ET Servernet EDIGLC SSC Ajax Mason FrenchOHR Core Routers FABOKeefeKingGCATT SOX LAWN IBB Howey Admin SavannahGTL MRDC Rich2 OHR SEB Neely MiRC Cherry-Emerson Couch ES&T MARC Habersham Lib-class French-class Sc-class Arch Daniel Savant44 Savant Weber Boggs GTRI YamacrawClass TechSq Classroom Lyman 505 Rich133Deployment

Office of Information Technology 6GAMMON Georgia Measurement and Monitoring –State-wide initiative Distance Learning and Professional Education (DLPE) Valdosta State University, Armstrong Atlantic State University, Barrow County School System.

Office of Information Technology 7 Other Deployments Local ISPs –Major providers (Level3, Qwest, Charter) –Residential (SpeedFactory, BellSouth, Charter, Cox) Global collaborations –International focus in strategic plan –Metz, Shanghai –Leverage Global PMP Infrastructure and communicate using emerging standards

Office of Information Technology 8 Deployment Experience On the whole, very smooth Control of Network –Firewall –Physical access –Control of satellite server, DNS Warmly welcomed –Help is on the way –Pass the buck

Office of Information Technology 9 Deployment Experience Donated hardware –Cheap –Flakey –Scavenging of parts before donation GAMMON/International deployment faces more of the traditional challenges

Office of Information Technology 10Toolset No in-house development of measurement tools. Original plan also didn’t include much visualization. –Inconvenient to click through numerous graphs

Office of Information Technology 11Measurements Currently –Smokeping - roundtrip time and graphs. –Nagios - Services. –Security - nessus and nmap. Also available –Iperf (bwctl) - TCP throughput only. –Pathchar, traceroute Coming soon –NDT (central, distributed) –Test bed for tools under development

Office of Information Technology 12 Measurement Experiences Passive Monitoring of border traffic –Bwctl.sox is outside GT. OWAMP –NTP Alleged network problems are often issues with applications –Added application monitoring using Nagios Information Security –CPR as a platform for other groups, research

Office of Information Technology 13Analysis Analysis –Create base-lines for historical comparison –Use multiple view to detect location –Middleware Alarm system –Plateau detector (AMP), RIPE-TT –How should we react to alarms? –Troubleshooting guide

Office of Information Technology 14 Analysis Experience Initial design was active monitoring –Integrate with passive tools –Wireless tools, NETI –Provide a platform for localized netflow reports Initial design was to avoid looking at graphs –Auto detect and alarms –MyCPR

Office of Information Technology 15MyCPR Configurable alarms and graphs

Office of Information Technology 16 Case Studies CPR has helped solve numerous issues –Firewall –Network slowness for file sharing –Dropped sessions Not everything is a network issue

Office of Information Technology 17Experiences Don’t assume anything –If you don’t measure, you don’t know. Don’t expect people to do what they should When one door closes, another one opens.

Office of Information Technology 18 This is the end Contact Project WebSite –