1. Circuit Monitoring 2010-01-31, perfSONAR-PS Developers Meeting Aaron Brown, Ezra Kissel

2. Problems – Difficult to add new metrics to E2EMon – E2EMon model is heavily dependent on naming conventions – A single missing MA can render the end-to-end circuit incomprehensible – The schema does not allow for tying circuits to underlying infrastructure Goal – Make it easy to add new monitored metrics without changing the model – Remove need to use of circuit naming convention for defining circuit characteristics – Allow interested clients to dive down into the physical makeup of the circuit, if allowed. – Allow for model to expand to support future circuit properties like asymmetric routes, failover paths, etc. 2 – 3/12/2016, © 2009 Internet2 Circuit Monitoring

3. Up/Down Status – End-to-end, Per-domain, Per-link (if available) Ethernet – Utilization End-to-end, Per-domain (minimum: edge points), Per-link (if available) – Errors End-to-end, Per-domain (minimum: edge points), Per-link (if available) SONET – Errored seconds, light levels IP – Achievable bandwidth end-to-end, per-domain or link if possible – Latency end-to-end, per-domain or link if possible – Loss end-to-end, per-domain or link if possible Others? 3 – 3/12/2016, © 2009 Internet2 Relevant Metrics

4. 4 – 01/31/10, © 2009 Internet2 Additional Considerations End-site monitoring – Hosts providing services and applications – snmpd – web100 for connection-specific statistics Metric composition – A number of disparate metrics are collected – Options: Keep technology-specific statistics Attempt to compose and normalize Others? – Factors include archival and display requirements

5. 5 – 3/12/2016, © 2009 Internet2 Circuit Architecture Circuit Descriptor Segment Descriptor

6. Topology Service – Holds the circuit and segment descriptors Lookup Service – Allows clients to discover the location of the circuit and segment descriptors as well as measurement data Circuit Creation Service Monitoring Service(s) – Holds measurement data about the circuit Domain Circuit Monitoring Agent – Constructs the circuit and segment descriptor – Kicks off monitoring as needed 6 – 3/12/2016, © 2009 Internet2 Circuit Architecture - Components

7. 7 – 3/12/2016, © 2009 Internet2 Circuit Architecture – Data Query Topology Service Lookup Service Client Monitoring Service Monitoring Service Circuit Creation Service switch Circuit Monitoring Agent Circuit Monitoring Agent

8. 8 – 3/12/2016, © 2009 Internet2 Circuit Architecture – Data Query Topology Service Lookup Service Client Monitoring Service Monitoring Service Circuit Creation Service switch Circuit Monitoring Agent Circuit Monitoring Agent

9. 9 – 3/12/2016, © 2009 Internet2 Circuit Architecture – Data Query Topology Service Lookup Service Client Monitoring Service Monitoring Service Circuit Creation Service switch Circuit Monitoring Agent Circuit Monitoring Agent

10. 10 – 3/12/2016, © 2009 Internet2 Circuit Architecture – Data Query Topology Service Lookup Service Client Monitoring Service Monitoring Service Circuit Creation Service switch Circuit Monitoring Agent Circuit Monitoring Agent

11. 11 – 3/12/2016, © 2009 Internet2 Circuit Architecture – Data Query Topology Service Lookup Service Client Monitoring Service Monitoring Service Circuit Creation Service switch Circuit Monitoring Agent Circuit Monitoring Agent

12. 12 – 3/12/2016, © 2009 Internet2 Circuit Architecture – Data Query Topology Service Lookup Service Client Monitoring Service Monitoring Service Circuit Creation Service switch Circuit Monitoring Agent Circuit Monitoring Agent

13. 13 – 3/12/2016, © 2009 Internet2 Circuit Architecture – Data Query Topology Service Lookup Service Client Monitoring Service Monitoring Service Circuit Creation Service switch Circuit Monitoring Agent Circuit Monitoring Agent

14. 14 – 3/12/2016, © 2009 Internet2 Circuit Architecture – Data Query Topology Service Lookup Service Client Monitoring Service Monitoring Service Circuit Creation Service switch Circuit Monitoring Agent Circuit Monitoring Agent

15. 15 – 3/12/2016, © 2009 Internet2 Circuit Architecture – Data Query Topology Service Lookup Service Client Monitoring Service Monitoring Service Circuit Creation Service switch Circuit Monitoring Agent Circuit Monitoring Agent

16. Circuit Monitoring 2010-01-31, perfSONAR-PS Developers Meeting Aaron Brown, Ezra Kissel For more information, visit www.internet2.edu 16 – 3/12/2016, © 2009 Internet2