Transcript Application of GMPLS technology to traffic engineering

Internet2 Spring 2005 Member Meeting
Application of GMPLS Technology and All-Optical Signal Regeneration
Technology to Next-Generation Network (NGN)
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
Agenda
• Motivation
• GMPLS applications
• Traffic engineering scenario
– How does it work?
• Results and discussion
• Conclusion
Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics.
4/May/2005
Internet2 Spring 2005 Member Meeting
Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network
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.
Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics.
4/May/2005
Internet2 Spring 2005 Member Meeting
Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network
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.
Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics.
4/May/2005
Internet2 Spring 2005 Member Meeting
Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network
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
Traditional MPLS ( “PSC” in GMPLS )
Carrier layer
Eth
PPP/HDLC
ATM/FR
SONET / SDH / Optical
Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics.
4/May/2005
Internet2 Spring 2005 Member Meeting
Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network
Basic Idea of traffic engineering with dynamic topology
modification
Traffic packets
Congested
New GMPLS LSP (Label Switched Path)
GMPLS network
GMPLS LSP (= Carrier layer path) is presented as an available IP link to IP layer
Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics.
4/May/2005
Internet2 Spring 2005 Member Meeting
Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network
Testbed Network configuration
PS
Host A
R1,2
R3
SITE A
TE-controller
(Traffic
engineering
controller)
PS
PXC
Traffic monitor (Packet Shaper)
High-speed IP router (Cisco 124xx)
PC router (Linux base)
Photonic cross-connect
Calient DiamondWave 128
R3
R1
R2
PS
PXC
Host B
Control plane network
SITE B
Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics.
4/May/2005
Internet2 Spring 2005 Member Meeting
Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network
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.
Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics.
4/May/2005
Internet2 Spring 2005 Member Meeting
Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network
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.
Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics.
4/May/2005
Internet2 Spring 2005 Member Meeting
Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network
How does it work (1)
Host A
Initial state
PS
SITE A
R3
R1
R2
PS
PXC
TE-controller
No signal transmitted
(control plane network is not shown)
Host B
SITE B
Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics.
4/May/2005
Internet2 Spring 2005 Member Meeting
Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network
How does it work (2)
Host A
SITE A
Telnet from host A to host B
PS
telnet session
R3
R1
TE-controller
R2
PS
PXC
Host B
SITE B
Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics.
4/May/2005
Internet2 Spring 2005 Member Meeting
Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network
How does it work (3)
HostBad
A
Quality
Increase delay on R3
PS detects quality degradation of the telnet session
SITE A
PS
Congested (emulated by artificial packet delay)
R3
R1
TE-Controller
R2
PS
PXC
Host B
SITE B
Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics.
4/May/2005
Internet2 Spring 2005 Member Meeting
Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network
How does it work (4)
HostBad
A
Quality
SITE A
PS sends alarm to TE-controller
PS
Congested
R3
ALARM !
(SNMP Trap)
R1
TE-controller
R2
PS
PXC
Host B
SITE B
Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics.
4/May/2005
Internet2 Spring 2005 Member Meeting
Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network
How does it work (5)
HostBad
A
Quality
SITE A
Establish new GMPLS LSP (optical link)
PS
Congested
R3
R1
TE-controller
R2
PS
PXC
Host B
GMPLS LSP is set-up and becomes available as an IP link
SITE B
Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics.
4/May/2005
Internet2 Spring 2005 Member Meeting
Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network
How does it work (6)
Host A
Good Quality
SITE A
Change route of telnet traffic
PS
Congested
R3
R1
TE-controller
R2
PS
PXC
Host B
SITE B
Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics.
4/May/2005
Internet2 Spring 2005 Member Meeting
Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network
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.
Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics.
4/May/2005
Internet2 Spring 2005 Member Meeting
Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network
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.
Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics.
4/May/2005
Internet2 Spring 2005 Member Meeting
Application of GMPLS Technology and All-Optical signal Regeneration Technology to Next-Generation Network
Conclusion
• GMPLS application to traffic engineering
has been discussed.
• One example has been successfully
demonstrated.
Proprietary of Japan Telecom Co., Ltd, and National Institute of Informatics.
4/May/2005