IPPM measurements measurements, G , G- -WiN, 6WiN and GANT(2 WiN, - PowerPoint PPT Presentation

IPPM measurements measurements, G , G- -WiN, 6WiN and GÉANT(2 WiN, 6WiN and GÉANT(2 ) IPPM ) Stephan Kraft Stephan Kraft 14.12.2004 14.12.2004

Table of Contents Contents Table of ! DFN- DFN -Labor@RRZE Labor@RRZE – – who who are are we we? ? ! ! ! IPPM- IPPM -DFN Measurement System DFN Measurement System – – that´s that´s what what we we do do ! Examples: : ! Examples ! ! G- G -WiN WiN ! ! 6WiN 6WiN ! GÉANT(2) GÉANT(2) ! ! Contact ! Contact S. Kraft - 6QM-workshop 14.12.2004

DFN- -Labor@RRZE Labor@RRZE – – who who we we are are DFN ! RRZE ! RRZE ! Regional Computing Center Erlangen ! Regional Computing Center Erlangen ! IT service for the University Erlangen- -Nürnberg Nürnberg ! IT service for the University Erlangen ! DFN ! DFN ! ! German research network provider German research network provider ! DFN- -Labor@RRZE Labor@RRZE ! DFN Research project of the DFN at the RRZE ! ! Research project of the DFN at the RRZE Network hardware tests ! ! Network hardware tests Development and operation of an IP accounting system ! ! Development and operation of an IP accounting system Quality assurance for the G- -WiN SDH/WDM core network WiN SDH/WDM core network ! ! Quality assurance for the G Development and operation of an IPPM measurement system ! ! Development and operation of an IPPM measurement system S. Kraft - 6QM-workshop 14.12.2004

IPPM- -DFN Measurement System DFN Measurement System IPPM ! Intention of the measurements Intention of the measurements ! ! Academic interest to determine the IP Quality of Service ! Academic interest to determine the IP Quality of Service parameters parameters ! Verification of provider's network failure data ! Verification of provider's network failure data ! Early warning system for network failure ! Early warning system for network failure ! Correlation of QoS parameters with other network ! Correlation of QoS parameters with other network parameters parameters ! Throughput Throughput ! ! Visual quality of video conferencing Visual quality of video conferencing ! ! Passive delay measurement Passive delay measurement ! Analysis of customer's network performance ! ! Analysis of customer's network performance ! Collaboration with DFN video conferencing team Collaboration with DFN video conferencing team ! ! Mobile boxes Mobile boxes ! ! Second network interfaces Second network interfaces ! S. Kraft - 6QM-workshop 14.12.2004

IPPM- -DFN Measurement System DFN Measurement System IPPM ! ! Active measurement Active measurement UDP- -Packets with timestamp Packets with timestamp ! ! UDP ! Packets are sent in groups ! Packets are sent in groups ! Group median / maximum - -> (no) single outliers > (no) single outliers ! Group median / maximum ! Current configuration: ! Current configuration: ! One group every 30 s ! One group every 30 s ! 5 packets per group ! 5 packets per group ! Distance between packets: 20 ms ! Distance between packets: 20 ms ! ! Configurable: Configurable: ! ToS bits ! ToS bits ! Packet size ! Packet size ! Group size, interval ! Group size, interval ! ! Central configuration Central configuration S. Kraft - 6QM-workshop 14.12.2004

IPPM- -DFN Measurement System DFN Measurement System IPPM ! ! 1 sending and 1 receiving process for every measurement 1 sending and 1 receiving process for every measurement connection connection ! Time offset between processes at every measurement PC to ! Time offset between processes at every measurement PC to avoid collisions avoid collisions A B A B Sending offset: Sending offset: t1 t1 t2 t2 t3 t3 t4 t4 C D C D S. Kraft - 6QM-workshop 14.12.2004

IPPM- -DFN Measurement System DFN Measurement System IPPM One way delay plot One way delay plot Routing Routing delay delay Link intrinsic Link intrinsic delay delay S. Kraft - 6QM-workshop 14.12.2004

G- -WiN WiN G ! ! Current Current G G- -WiN WiN - - Topology Topology Global Upstream Upstream Global 2*2,5 Gbps 2*2,5 Gbps GÉANT GÉANT 10 Gbps 10 Gbps S. Kraft - 6QM-workshop 14.12.2004

G- -WiN WiN - - Measurement Measurement G ! G- -WiN: National backbone of DFN WiN: National backbone of DFN ! G 10 level 1 sites, 17 level 2 sites ! ! 10 level 1 sites, 17 level 2 sites 7 x 10 Gbps Gbps, 31 x 2.4 , 31 x 2.4 Gbps Gbps, 1 x 622 Mbps , 1 x 622 Mbps ! ! 7 x 10 ! Current measurements Current measurements ! ! 27 active Measurement Points ! 27 active Measurement Points ! > 1200 connections in total, running 24/7 “full meshed” ! > 1200 connections in total, running 24/7 “full meshed” ! Up to 100 connections per PC ! Up to 100 connections per PC ! Central data analysis station ! Central data analysis station ! Fetches raw data regularly ( ≈ ≈ 200 MB / d) 200 MB / d) ! Fetches raw data regularly ( ! Computes: ! Computes: ! Timestamps, delay, jitter, loss Timestamps, delay, jitter, loss ! ! Group minimum, median, maximum Group minimum, median, maximum ! ! Traceroutes Traceroutes ! ! Stores analyzed data ( Stores analyzed data ( ≈ ≈ 240 MB / d) 240 MB / d) ! S. Kraft - 6QM-workshop 14.12.2004

G-WiN - - Measurement Measurement G-WiN current delay overview along SDH-paths: S. Kraft - 6QM-workshop 14.12.2004

G- -WiN WiN - - Measurement Measurement G Measurement Point Selection: Measurement Point Selection: S. Kraft - 6QM-workshop 14.12.2004

G- -WiN WiN - - Measurement Measurement G Path Selection: Path Selection: S. Kraft - 6QM-workshop 14.12.2004

Measurement Examples G- -WiN WiN Measurement Examples G Route flapping Route flapping S. Kraft - 6QM-workshop 14.12.2004

Measurement Examples G- -WiN WiN Measurement Examples G Delay and network utilization Delay and network utilization Long- -time (15 min) average time (15 min) average Long network load vs. delay shows at network load vs. delay shows at different customers either: different customers either: ! Correlation Correlation ! ! High delay without high load High delay without high load ! ! High load without increased High load without increased ! delay delay Higher time resolution of Higher time resolution of network load (< 1 s) necessary network load (< 1 s) necessary Lab tests! Lab tests! S. Kraft - 6QM-workshop 14.12.2004

Measurement Examples G- -WiN WiN Measurement Examples G Increased delay due to network equipment failure Increased delay due to network equipment failure S. Kraft - 6QM-workshop 14.12.2004

6WiN 6WiN ! Native IPv6 backbone ! Native IPv6 backbone ! Utilization of ! Utilization of network during ftp network during ftp download from download from Münster to to Münster Erlangen Erlangen S. Kraft - 6QM-workshop 14.12.2004

Measurement Examples 6WiN Measurement Examples 6WiN Measurements between Erlangen Erlangen and and Münster Münster (Delay) (Delay) ! Measurements between ! S. Kraft - 6QM-workshop 14.12.2004

Measurement Examples 6WiN Measurement Examples 6WiN Measurements between Erlangen Erlangen and and Münster Münster (Delay Variation) (Delay Variation) ! Measurements between ! S. Kraft - 6QM-workshop 14.12.2004

GÉANT GÉANT ! Topology ! Topology S. Kraft - 6QM-workshop 14.12.2004

GÉANT GÉANT Current Activities Current Activities Currently, five Measurement Nodes installed and running Currently, five Measurement Nodes installed and running ● ● Paris, Frankfurt, Rome, Poznan, Tel Aviv Paris, Frankfurt, Rome, Poznan, Tel Aviv ● ● http://www.win- -labor.dfn.de/cgi labor.dfn.de/cgi- -bin/geant/auswahl.pl bin/geant/auswahl.pl http://www.win ● ● IPv4 measurements running IPv4 measurements running ● ● Currently: “part” of the G- Currently: “part” of the G -WiN measurement system WiN measurement system ● ● Ongoing development Ongoing development ● ● IPv6 IPv6 ● ● Make IPPM conform to one way delay protocol (OWDP) Make IPPM conform to one way delay protocol (OWDP) ● ● Traceroute Traceroute ● ● Throughput / bandwidth Throughput / bandwidth ● ● Interface to raw / analyzed data Interface to raw / analyzed data ● ● More user interaction More user interaction ● ● ToS ToS ● ● Mobile boxes Mobile boxes ● ● S. Kraft - 6QM-workshop 14.12.2004