GN 4 3 WP 6 project incubator studies

GN 4 -3 WP 6 project incubator studies Performance Monitoring and Verification Pavle Vuletic, Uo. B/AMRES Marinos Dimolianis, NTUA Performance Management Workshop, Zagreb, 5 th March 2020 Public www. geant. org

Performance monitoring ten years ago • RIPE TTM (Test Traffic Measurements) project (till 2014) • • • PC boxes with GPS antenna Delay measurements Packet loss rates Delay variations (jitter). Bandwidth • GN 3 perf. SONAR (Toolkit v 3. 2) • Similar metrics • Similar footprint • 2 -3 weeks training • Vendors – proprietary protocols Cisco IP SLA, Juniper RPM • What if I want to make vendor agnostic solution to monitor my network (link by link)? What is the cost of that solution? 2 www. geant. org

During the last 10 years • SLA monitoring: delay, jitter, loss (throughput is not that important) • Initiatives to decrease the footprint (smallnodes - PMP, RIPE Atlas) – raspberry Pis, small computers • But is it convenient to maintain such a device in a remote rack? • Virtualization – can we do it on a virtual machine? • But can we expect to have servers in all Po. Ps/racks? • Service multiplexing (namespaces, etc. ) • Can we go to an even smaller footprint? (zero footprint monitoring – no VMs, no small devices)? 3 www. geant. org

Some things have changed in meantime • TWAMP implementation on Juniper devices • Virtual services on Cisco - can install Linux on spare CPU cycles and on that Linux e. g. perf. SONAR • Is it interoperable with Linux implementation? • Can it be used for detailed network performance monitoring? (end-to-end and per segment) • Also new databases, UIs (influx. DB, ELK, Grafana, …) – more about the integration, less software development 4 www. geant. org

Our previous studies • GN 4 -2 – Net. Mon, a system for scalable multiplexed network service monitoring • Per segment multidomain performance verification • VMs in intermediate nodes • Packet capturing to analyze performance • Modified OWAMP packets 5 Published in: https: //doi. org/10. 1016/j. comnet. 2019. 107050 www. geant. org

Two-Way Active Measurement Protocol (TWAMP) • Host to Host (twping – perfsonar/owamp) • Host to Router (twping – TWAMP server) • Router to Router (TWAMP server – client) • Host to virtual service on a router (twping - twping) VM VMX VM VSubuntu CSR 1000 v VM VM Servers 6 www. geant. org

Network Measurements • Juniper Routers (SNMP) • • 7 Round Trip Time (RTT) RTT Jitter RTT Inter-arrival Jitter Egress Inter-arrival Jitter Ingress Inter-arrival Jitter • Linux Hosts • • • Round Trip Time (RTT) Send Time Reflect Time Two Way Jitter Send Jitter Reflect Jitter www. geant. org

Network Measurements • Juniper Routers (SNMP) • • 8 Round Trip Time (RTT) RTT Jitter RTT Inter-arrival Jitter Egress Inter-arrival Jitter Ingress Inter-arrival Jitter Min, Max, Average, Std. Dev • Linux Hosts • • • Round Trip Time (RTT) Send Time Reflect Time Two Way Jitter Send Jitter Reflect Jitter Min, Max, Median www. geant. org

Testbed (1/4) 9 www. geant. org

Testbed (2/4) Jun. OS 19. 3 - v. MX - Twamp Server - Twamp Client 10 Cisco IOS XE – CSR V 1000 - Twamp Server www. geant. org

M ea su re m en ts Testbed (3/4) 11 • Host to Host Reported by Sender • Host to Router Reported by Sender • Router to Router SNMP collection & report www. geant. org

Testbed (4/4) Experiments 12 www. geant. org

Experiments (RTT) TWAMP Sessions • vmx 2 -vmx 4 (Router to Router) • h 10 – h 8 (host to host) • h 10 – vmx 4 (host to router) 13 www. geant. org

Experiments (Jitter) TWAMP Sessions • vmx 2 -vmx 4 (Router to Router) • h 10 – h 8 (host to host) • h 10 – vmx 4 (host to router) 14 www. geant. org

Future Plans • Investigate Streaming Telemetry Capabilities • In-Band Network Telemetry (Service Monitoring) 15 www. geant. org

Thank you Any questions? www. geant. org © GÉANT Association on behalf of the GN 4 Phase 3 project (GN 4 -3). The research leading to these results has received funding from the European Union’s Horizon 2020 research and innovation programme under Grant Agreement No. 856726 (GN 4 -3).