Multicast Monitoring System for Access Grid 18 th APAN Meeting - - - PowerPoint PPT Presentation
Supercomputing Center Supercomputing Center Supercomputing Center Korea Institute of Science and Technology Information Korea Institute of Science and Technology Information Korea Institute of Science and Technology Information Multicast
Supercomputing Center Supercomputing Center Supercomputing Center
Korea Institute of Science and Technology Information Korea Institute of Science and Technology Information Korea Institute of Science and Technology Information
18th APAN Meeting - Cairns - Jul. 2004
Jinyong Jo High Performance Research Networking Dept. jiny92@kisti.re.kr
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Venues Client, Rat/Vic
Audio/Video, Text and etc.
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Increased Sense
Build Integrated Grid Service Arch. Use Affordable IP-based A/V. Enable Group Interaction
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KOREA KOREA (4) (4)
USA (141) USA (141) Japan(4) Japan(4) Germany (7) Germany (7) Italy (1) Italy (1) Brazil (3) Brazil (3) United Kingdom (32) United Kingdom (32) The Netherlands (2) The Netherlands (2) Australia (14) Australia (14) China (6) China (6) Canada (9) Canada (9)
STAR LIGHT
Taiwan (4) Taiwan (4) Russia (1) Russia (1) Ireland (2) Ireland (2) Thailand (3) Thailand (3)
Asia Asia-
Australia area : over 30 nodes
http://www-fp.mcs.anl.gov/fl/accessgrid/ag-nodes.htm Http://accessgrid.or.kr http://accessgrid-org.kr
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Venue Server Bridge Server HQ Display
Multicast Tuning System & Toolkit Upgrading
AG Tutorial Distribution Technical Support
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Low Bitrate Video
H.261 Video Stream
H.261 Video Stream
Low Bitrate Audio
16KHz Audio Stream
16KHz Audio Stream
Other Apps. RTP/RTCP RTP/RTCP RTP/RTCP
Video Conference Video Conference
Remote Presentation Entertainment 3D Visualization
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High Quality Video High Quality Video
High Quality Audio
Video Conference
3D Visualization
Tactile (Haptic) Other Apps.
Remote Presentation Online Games TeleMedicine TeleMedicine Interactive Interactive e e-
Learning Entertainment Entertainment
RTP/RTCP RTP/RTCP RTP/RTCP
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– Higher Quality Visual Images and Sound – Seamless Collaboration (e.g., app sharing, …)
– Authenticated Access and Encrypted Media Transport
– Automate Operation at Node – No Operators! – Auto Diagnose Problems
– Last-One-Mile (Access) Network – Guarantee Reliable Transport
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Access Network & System Issues
: Mis-configuration in Multicast Routers : No Outstanding Reliable Transport Protocol : Complexity in Multicast Routing Protocols (DVMRP, PIM-SM, PIM-DM and etc)
Operational Issues
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Multicast Monitoring System for Access Grid
Diagnose Problems in Multicast Environment.
Supercomputing Center, KISTI.
Objective
: Provide User-Oriented Monitoring Toolkit Pursuing
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Episode I Routing Loop
Episode II Private IP Mis-Configuration DHCP with Private IP
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Multicast Beacon
MUVI (Multicast Visualization Tool)
– NLANR/DAST – AG and General Multicast Group – Written in Perl/Java – Client/Server Architecture – Active Monitoring with Streaming RTP – “Can You See the Beacon Now?” – POZNAN Supercomputing & Networking Center – General Multicast Group – Written in Java – SNMP-based Toolkit – Administrative Domain Tool
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MRM (Multicast Reachability Reachability Monitor) Monitor)
MHealth
–Needs Infrastructure to Assist in the Detection and Isolation for Multicast Traffics – Partial Implementation of Relevant Features like RTP – UCSB – Exploit mtrace and RTCP – Written in Java Apps – User Domain Tool and No Structural Requirements
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– Reachability Trace with mtrace – Receiver Statistics from RTCP analysis
– Session Listener with SAP/SDP (RFC 2973/2327) – Beacon-Style QoS Matrix – Multicast Diagnoses (Future Extensions)
– Porting mHealth to WindowsTM System – Ease of Use – Graphical User Interfaces – Others.
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Management
Packet Analyzer Manager
Interface
SAP Listen Topology Map QoS Matrix Statistic Charter Graphic User Interface Path Analyzer SAP SDP RTP RTCP Capture mrinfo mtrace Trace
INTERNET
Passive Active
– Measure or Listen Session Information via Capturing SAP/SDP, RTCP packets – Session Listener – Build QoS Matrix – Measure Multicast Reachability with mtrace – Diagnose First-hop Router – Build Topology Map
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– Written in JavaTM – Ported mtrace to the WindowsTM Platform : K. Almeroth, University of Oregon – Java Media Framework (JMF) for RTP Library – For Chart and Graph : JFreeChartTM
client client client Monitoring System
Passive Monitoring with SAP/SDP and RTP/RTCP Active Monitoring with mtrace and mrinfo
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– – Session Listener Session Listener Session Name Transport Protocol Media Type Session Address Port Number
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– – QoS QoS Matrix Matrix Session Address # of Participants Src/Des. Addr. Loss Fraction Loss Jitter
No Loss Loss <= 1% 1%< loss <= 15% Problems in Receiving
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– – QoS QoS Statistics of a pair Statistics of a pair Issue Mouse Event & Choose the “tracing” Option
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– – Topology Map Topology Map
Client Router/No Loss Router/Ambiguous Router/Loss Client Router/No Loss Router/Ambiguous Router/Loss
Session Address Rx Address Router Address Multicast Protocol Loss/Input
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– – First First-
Hop Diagnoses Router Address IOS version Supporting Protocols and etc.
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– Stabilize Current Toolkit
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– End-to-End Reachability – Possible Host-System Problems or Performance
– Network Diagnostic Tools (ANL), Advisor (NCSA), E2E PiPes (Internet2), Performance Diagnostic Tools (KISTI)
– Enhance Session Directory Service
Venue Servers to Retrieve Multicast Session Information
Supercomputing Center Supercomputing Center Supercomputing Center
Korea Institute of Science and Technology Information Korea Institute of Science and Technology Information Korea Institute of Science and Technology Information