1. Application of GMPLS technology to traffic engineering Shinya Tanaka, Hirokazu Ishimatsu, Takeshi Hashimoto, Shiro Ryu (1), and Shoichiro Asano (2) 1: Laboratories, Japan Telecom Co., Ltd. 2: National Institute of Informatics May 4, 2005 Internet2 Spring 2005 Member Meeting Application of GMPLS Technology and All-Optical Signal Regeneration Technology to Next-Generation Network (NGN)

2. Internet2 Spring 2005 Member Meeting Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics. 4/May/2005 Agenda Motivation GMPLS applications Traffic engineering scenario –How does it work? Results and discussion Conclusion

3. Internet2 Spring 2005 Member Meeting Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics. 4/May/2005 Motivation GMPLS enables dynamic topology reconfiguration in “layer 2/1” network. –Establish new physical connection, change route, change destination, … Many application ideas have been proposed but few applications have been demonstrated. Application of GMPLS technology to traffic engineering.

4. Internet2 Spring 2005 Member Meeting Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics. 4/May/2005 GMPLS applications … for whom? For users –On-demand private line (wire). Not “pseudo wire” (PWE; Pseudo Wire Emulation), but real wire. –User originated signaling. For service network providers –Decrease of network turn-up time. –Fault recovery considering layer integration. !Traffic engineering with dynamic topology modification.

5. Internet2 Spring 2005 Member Meeting Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics. 4/May/2005 Dynamic topology modification Modify the topology of the carrier layer (the network layer carrying IP). Current network … carrier layer topology is STATIC (configured by human) In GMPLS network … carrier layer topology is DYNAMIC. IP layer can control carrier layer topology. i.e. IP layer can modify carrier layer topology as IP layer wants. IP EthPPP/HDLCATM/FR Traditional MPLS ( “PSC” in GMPLS ) Carrier layer SONET / SDH / Optical

6. Internet2 Spring 2005 Member Meeting Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics. 4/May/2005 Basic Idea of traffic engineering with dynamic topology modification Congested GMPLS network New GMPLS LSP (Label Switched Path) GMPLS LSP (= Carrier layer path) is presented as an available IP link to IP layer Traffic packets

7. Internet2 Spring 2005 Member Meeting Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics. 4/May/2005 Testbed Network configuration R3 R2 R1 PS TE-controller (Traffic engineering controller) SITE A SITE B PS Traffic monitor (Packet Shaper) R1,2 High-speed IP router (Cisco 124xx) PXC Photonic cross-connect Calient DiamondWave 128 R3 PC router (Linux base) Host A Host B Control plane network PXC

8. Internet2 Spring 2005 Member Meeting Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics. 4/May/2005 Equipments High-speed IP routers. PXCs –All optical cross-connect. Ability to switch optical link independently from signal type (GbE, SONET, SDH, …) PC routers: Linux based PC routers –GMPLS protocol software installed. Traffic monitors: Packeteer “Packet Shaper” (PS) –for traffic quality monitoring. –PS can measure application level response. –In this experiment, telnet session response time is measured. Traffic engineering controller (TE-controller) –A laptop PC running the scenario driver program written in Java.

9. Internet2 Spring 2005 Member Meeting Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics. 4/May/2005 Scenario 1.Telnet from Host A to Host B. 2.Add delay at R3 to emulate network congestion (by “netem”; network emulator.) http://developer.osdl.org/shemminger/netem 3.Packet Shaper detects quality degradation of the telnet session. Quality means response time in this context. Send a SNMP trap to TE-controller as an alarm 4.TE-controller will … Establish new GMPLS LSP (optical link) Update routing policy Modify routing table as only telnet (tcp port 21) packets are transported over the LSP. 5.Then the quality of the telnet session will recover.

10. Internet2 Spring 2005 Member Meeting Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics. 4/May/2005 How does it work (1) R3 R2 R1 PS TE-controller SITE A SITE B Host A Host B PXC (control plane network is not shown) Initial state No signal transmitted

11. Internet2 Spring 2005 Member Meeting Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics. 4/May/2005 How does it work (2) R3 PXC R2 R1 PS TE-controller SITE A SITE B Host A Host B Telnet from host A to host B telnet session

12. Internet2 Spring 2005 Member Meeting Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics. 4/May/2005 How does it work (3) R3 PXC R2 R1 PS TE-Controller SITE A SITE B Host A Host B Increase delay on R3 Bad Quality PS detects quality degradation of the telnet session Congested (emulated by artificial packet delay)

13. Internet2 Spring 2005 Member Meeting Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics. 4/May/2005 How does it work (4) R3 PXC R2 R1 PS TE-controller SITE A SITE B Host A Host B PS sends alarm to TE-controller Congested ALARM ! (SNMP Trap) Bad Quality

14. Internet2 Spring 2005 Member Meeting Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics. 4/May/2005 How does it work (5) R3 PXC R2 R1 PS TE-controller SITE A SITE B Host A Host B Congested GMPLS LSP is set-up and becomes available as an IP link Bad Quality Establish new GMPLS LSP (optical link)

15. Internet2 Spring 2005 Member Meeting Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics. 4/May/2005 How does it work (6) R3 PXC R2 R1 PS TE-controller SITE A SITE B Host A Host B Congested Good Quality Change route of telnet traffic

16. Internet2 Spring 2005 Member Meeting Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics. 4/May/2005 Results The system worked successfully. Quality of the telnet session has been recovered. Telnet traffic has been bypassed to a new optical path. Traffic of other services (ping, ftp, …) remains in bad quality. i.e. in large latency. LSP set-up was completed within one second, but about ten seconds were necessary for the telnet session quality to recover.

17. Internet2 Spring 2005 Member Meeting Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics. 4/May/2005 Discussion GMPLS will be useful when carrier layer resource sharing is planned. –e.g. Extra-traffic in SONET/SDH. Coordination between a (GMPLS) control plane and resource management system is essential. –Resource measurement seems to be a core task of service provider.

18. Internet2 Spring 2005 Member Meeting Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics. 4/May/2005 Conclusion GMPLS application to traffic engineering has been discussed. One example has been successfully demonstrated.