Programmable Network Node: Applications
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MIB API Monitor device Management Information Base variables MIB RMON and RMON-II DiffServ Network API (JFWD) Interface to Filters set packet drop filters intercept packets carbon copy packets while forwarding at line-speed
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Programmable Network Node: Applications
- 1. Programmable Network Node: Applications Tal Lavian1 [email protected] Rob Jaeger1,2 [email protected] [email protected] 1 Technology Center, Enterprise Solutions, Nortel Networks 2 Department of Computer Science, University of Maryland Java-enable Network Devices 1
- 2. Accomplishments • JVM on a silicon-based L3 Routing Switch • ORE - Oplet Run-time Environment • Java-enabled Device Architecture • SNMP MIB API • Network Forwarding API • Active Networks applications: — dynamic control and modification of ASIC forwarding Java-enable Network Devices 2
- 3. NNoorrtteell JJaavvaa--EEnnaabblleedd DDeevviiccee AArrcchhiitteeccttuurree JNI ORE Service Device HW Oplet JVM Operating System Java-enable Network Devices 3 C/C++ API Java API Device Code Oplet Runtime Env Device Drivers JFWD API AN Packet Interception
- 4. Java-enable Network Devices 4 Tools • MIB API — Monitor device Management Information Base variables – MIB – RMON and RMON-II – DiffServ • Network API (JFWD) — Interface to Filters – set packet drop filters – intercept packets – carbon copy packets while forwarding at line-speed
- 5. Client API Abstract Variable Interface MIB Map Native Variable Interface Java-enable Network Devices 5 MIB API Java Virtual Machine SNMP PDU Layer Instrumentation & Annotation Layer Real Time Operating System Processor and other Hardware Client Bean •API uses a MIB Map to dispatch requests to variable access routines •Different parts of the MIB tree can be serviced by different mechanisms •Two main schemes: •An ad hoc interface to the SNMP instrumentation layer •A generic SNMP loopback
- 6. NNeettwwoorrkk AAPPII:: DDyynnaammiicc CCoonnffiigguurraattiioonn ooff FFoorrwwaarrddiinngg RRuulleess CPU Java-enable Network Devices 6 Forwarding Processor Forwarding Processor Forwarding Processor Forwarding Processor Forwarding Rules SW HW Forwarding Rules Forwarding Rules Forwarding Rules Java Services
- 7. Network API: Control-vs-Forwarding Plane Control Plane Java-enable Network Devices 7 CCeennttrraalliizzeedd,, CCPPUU--bbaasseedd RRoouutteerr FFoorrwwaarrddiinngg--PPrroocceessssoorrss bbaasseedd RRoouutteerr Routing SW CCoonnttrrooll ++ FFoorrwwaarrddiinngg FFuunnccttiioonnss ccoommbbiinneedd Control separated FFrroomm ffoorrwwaarrddiinngg CPU CPU Forwarding Processor Forwarding Processor Forwarding Processor Slow Wire Speed
- 8. NNeettwwoorrkk AAPPII:: PPaacckkeett CCaappttuurree CPU Java-enable Network Devices 8 Forwarding Processor Forwarding Processor Forwarding Processor Forwarding Processor AN Apps JFWD to Divert or Copy Wire Speed Packet
- 9. Applications • Active Network Management — Proactive Network Management — Diagnostic Agents • Dynamic DiffServ Classifier • Active Intrusion Detection • Multicast Caching • IP Accounting • Application-Layer Router-Server Collaboration • Pseudo Default Drop Capability Java-enable Network Devices 9
- 10. Active Network Management • Download Oplet Service to the device. • Monitor MIB variables No more polling Extensive access to internal resources Java-enable Network Devices 10 • Might be complex conditions • Trend analysis • DiffServ, RMON-II, etc… MIBs • Report “events” to NMS — drop rate, packets/second • Allow Service to take action • Download application • Adjust parameters based on direction from NMS Monitor Appropriate Application Download Download Complex Condition Exceeded NMS router
- 11. Proactive Network Management • Device-based Intelligence is Dynamic Java-enable Network Devices 11 —Static Management – SNMP set/get mechanisms – Telnet, User Interfaces (cli, web, etc…) —Dynamic Closed-loop Management at Network Node – capable of dealing with new and difficult situations – autonomous and rational properties. – dynamically system monitoring & modification – report status and trends —Monitor MIB to identify poor performance and notify NMS prior to failures —Downloaded service can instantiate new services
- 12. Java-enable Network Devices 12 Diagnostic Agents • Automatic traceroute from edge router where problem exists. —Each node reached generates a report to NMS —Traceroute code “moves” to next node in path —Mobile agents identify router health —Create logs for NMS
- 13. Dynamic DiffServ Classifier • Set router filters to sample packets from edge device host ports • Identify real-time traffic (RTP flows) • Set filter on port to adjust DS-byte value based on policy • Keep track of filters set • Remove filters no longer in use Java-enable Network Devices 13
- 14. DDyynnaammiicc DDiiffffSSeerrvv CCllaassssiiffiiccaattiioonn Control Plane Java-enable Network Devices 14 Forwarding Processor Forwarding Processor Policy Filters ORE Service Packet Packet Filte r Packet • Sample packets, set filters to modify DS-byte for Per-Hop-Behavior modification
- 15. Active Intrusion Detection • Intruder is identified by Intrusion Detection software • Intruder signature is identified • Mobile agent is dispatched in direction of intruder (based on physical port of entry) • Mobile agent “chases” intruder and terminates him (shuts down link, reboot host, notify NMS) Java-enable Network Devices 15
- 16. Multicast Caching • Reliable Multicasting • Distribute error control throughout multicast tree • Retransmission a local node keeps control close to lossy links • Balances processor load away from multicast source Java-enable Network Devices 16
- 17. Java-enable Network Devices 17 IP Accounting • Project ABCD (Active Bean Counter in Device) • Perform usage accounting at edge node • PreCorrelate/aggregate/reduce accounting record on-site • $1 rule for billing • Real-time billing can be realized • Customize billable resources
- 18. Application Layer Collaboration Among Routers and Servers • Server farm load balancing — server state monitored; rerouting based on congestion/load • Auctioning Applications • Bandwidth Broker Java-enable Network Devices 18
- 19. Server Collaboration • Supports distributed computing applications in which network devices participate Java-based Application — router to router — server to router • Supports Intelligent Agents • Supports Mobile Agents Java-based Application Java-based Application Java-enable Network Devices 19
- 20. Bandwidth Broker Collaboration • Routers Monitor RMON and DIFFSERV MIB • Report Per-IPAddress, Per Protocol statistic to resource broker • Adjust DS-byte and Per Hop Behavior based on Bandwidth Broker directions Java-enable Network Devices 20
- 21. RReeaall--ttiimmee ffoorrwwaarrddiinngg SSttaattss aanndd MMoonniittoorrss AN Apps CPU SW HW Forwarding Rules Forwarding Processor Statistics &Monitors Forwarding Rules Forwarding Processor Statistics &Monitors Java-enable Network Devices 21 Forwarding Rules Forwarding Processor Statistics &Monitors
- 22. DDyynnaammiicc -- OOnn tthhee FFllyy CCoonnffiigguurraattiioonn • From downloadable Java application, we can modify the behavior of the ASICs Java-enable Network Devices 22
- 23. MMiixxeedd TTooppoollooggyy ooff AANN ssyysstteemm - AN Node - None AN Node NO need to know the AN topology ahead of time Java-enable Network Devices 23
- 24. AAccttiivvee NNooddee TTooppoollooggyy DDiissccoovveerryy - AN Node - Non AN Node NO need to know the AN topology ahead of time Java-enable Network Devices 24
Editor's Notes
- #5: To introduce the new Open Networking Architecture that is based on Java-enabled Network Devices To enable easy 3rd party integration and leverage Nortel Networks’ competitive advantage
- #10: To introduce the new Open Networking Architecture that is based on Java-enabled Network Devices To enable easy 3rd party integration and leverage Nortel Networks’ competitive advantage
- #14: To introduce the new Open Networking Architecture that is based on Java-enabled Network Devices To enable easy 3rd party integration and leverage Nortel Networks’ competitive advantage
- #16: To introduce the new Open Networking Architecture that is based on Java-enabled Network Devices To enable easy 3rd party integration and leverage Nortel Networks’ competitive advantage
- #17: To introduce the new Open Networking Architecture that is based on Java-enabled Network Devices To enable easy 3rd party integration and leverage Nortel Networks’ competitive advantage
- #21: To introduce the new Open Networking Architecture that is based on Java-enabled Network Devices To enable easy 3rd party integration and leverage Nortel Networks’ competitive advantage