GMPLS interoperability testin Super SINET

Shoichiro Asano

The National Institute of Informatics

Hirokazu Ishimatsu

Japan Telecom Co., Ltd.

Super SINET

• Ultrahigh-speed network intended to develop and promote Japanese academic researchers by strengthening collaboration among leading research institutes.

• Operated by The National Institute Informatics (NII) which is an independent administrative corporation.

• Besides the academic network, there is the research project studying the next generation optical networks.

Super SINET composition figure

Research project

• Focus on optical technologies– Physical layer

• 40G bit/s transmission• Dispersion compensation• Optical regeneration

– Control plane• GMPLS interoperability• GMPLS LSP recovery

Testbed

• Cisco 12400 series routers

• Calient 3D-MEMS-based PXCs

• Mitsubishi bascule-type PXC

• NEC DWDM systems

• 30-km-long Installed fiber

Photograph of testbed

Control Plane(Ethernet Hub)Control Plane(Ethernet Hub)

3D-MEMS PXCs(Calient DiamondWave)

3D-MEMS PXCs(Calient DiamondWave)

Bascule type PXC(Mitsubishi PXC)

Bascule type PXC(Mitsubishi PXC)

Routers(Cisco 12400)

Routers(Cisco 12400)

DWDM(NEC SpectralWave,

backside of these machenes)

DWDM(NEC SpectralWave,

backside of these machenes)

Bascule type optical switch

0 2 4 6 8 10 12 14 16 18 20Time [ms]

Opt

ical

pow

er[a

rbitr

ary

unit]

B allP in

P iezoac tuator

S pring

P olymerwaveguide film

T ransmission

A ir gap

Reflec tion

Polymer waveguide filmInput1

Input2

光 出 力

Output2

Output1

Fiber

•16x16 switching matrix•0.3 ms switching speed

What we have achieved

• All-optical end-to-end path rerouting• PXC, WDM, and IP router integration• Full set of generalized multi-protocol label

switching (GMPLS) protocol suite– RSVP-TE, OSPF-TE, LMP and LMP-WDM

• Two types of PXCs– 3D-MEMS, bascule type optical switch

• Installed cable as one of data links• Four vendor interoperability

Test configuration

Site B

WD

M_B

Control plane network

PXC_A PXC_B

PXC_C

Control plane network (Fast Ethernet)Data plane network (OC-48 POS, 1310nm)

99:1 coupler

Optical power monitor

Router_A Router_B

PXC_A, PXC_B: Calient DiamondwavePXC_C: Mitsubishi PXCRouter_A, Router_B: Cisco GSR 12400WDM_A, WDM_B: NEC SpectralWave

WDM_ASite A variable attenuator

Installed cable (30km)

3D-MEMS

Bascule optical switch

Path setup

Site B

WD

M_B

PXC_A PXC_B

PXC_C

Router_A Router_B

WDM_ASite A variable attenuator

Signaling for setup (RSVP-TE)Signaling for setup (RSVP-TE)

Fault detection, localization

Site B

WD

M_B

PXC_A PXC_B

PXC_C

Router_A Router_B

WDM_ASite A variable attenuator

Path error(RSVP-TE)Path error(RSVP-TE)

Link error(LMP-WDM)Link error(LMP-WDM)

Link error(LMP-WDM)Link error(LMP-WDM)

Signaling for deletion (RSVP-TE)Signaling for deletion (RSVP-TE)

Find alternative route, restoration

Site B

WD

M_B

PXC_A PXC_B

PXC_C

Router_A Router_B

WDM_ASite A variable attenuator

Topology discovery

Find alternative route

Signaling for setup (RSVP-TE)Signaling for setup (RSVP-TE)

××

Message sequence

ChannelStatus: SF

ChannelStatus: SF

PathTear PathTearPathError

0

39

79 PathTear

Path3675

4158

Path Path Path

Resv

ResvResvResv4187

3782

PXC_A PXC_BRouter_A Router_BPXC_CWDM

Path deletion

Fault localization

Topology discovery,Rerouting calculation

Alternative LSP setup

Time [ms]

Probably be able to shorten by router software improvement

Probably be able to shorten by router software improvement

Pre resource allocation (i.e. protection) may improve this Pre resource allocation (i.e.

protection) may improve this

Measured optical power during restoration process(three PXCs test)

-55

-50

-45

-40

-35

-30

0 1 2 3 4 5 6 7 8 9 10 11 12Time [sec]

Opt

ical

pow

er [dB

m]

Conclusion

• Interoperability of PXCs, WDMs and IP routers has been successfully demonstrated using an installed fiber.– Two types of PXCs; bascule type optical switch,

3D-MEMS • Four major GMPLS protocols have been

interoperated.– RSVP-TE, OSPF-TE, LMP, and LMP-WDM

• Successful rerouting of all-optical path has been performed by the signaling via out-of-band control plane network.

Backup slides

Network configuration(two PXCs test)

Site B

WD

M_B

Control plane network (Ethernet LAN)

PXC_A PXC_B

Control plane network (Fast Ethernet)Data plane network (OC-48 POS, 1310nm)

99:1 coupler

Optical power monitor

Router_A Router_B

PXC_A, PXC_B: Calient DiamondwaveRouter_A, Router_B: Cisco GSR 12400WDM_A, WDM_B: NEC SpectralWave

WDM_ASite A variable attenuator

Installed cable (30km)

3D-MEMS

Restoration procedure- Path setup -

Site B

WD

M_B

PXC_A PXC_BRouter_A(Initiator)

Router_B(Terminator)

WDM_ASite A variable attenuator

Signaling for setup (RSVP-TE)

Restoration procedure- Fault detection, localization -

Site B

WD

M_B

PXC_A PXC_BRouter_A(Initiator)

Router_B(Terminator)

WDM_ASite A variable attenuator

Path error(RSVP-TE)

Link error(LMP-WDM)

Link error(LMP-WDM)

Signaling for deletion (RSVP-TE)

Restoration procedure- Find alternative route, restoration -

Site B

WD

M_B

PXC_A PXC_BRouter_A(Initiator)

Router_B(Terminator)

WDM_ASite A variable attenuator

Topology discovery(OSPF-TE)

Find alternative route

Signaling for setup (RSVP-TE)

××

Message sequence(two PXCs test)

ChannelStatus: SD

ChannelStatus: SF

PathTear

PathTearPathError

0

1350

2072PathTear

Path6354 Path PathResvResvResv

6775

PXC_A PXC_BRouter_A(Initiator)

Router_B(Terminator)WDM

PathError

PathTear

Path Path PathResv

ResvTearResvResvTearResv

ResvTear PathTearPathTear

ChannelStatus: SF

3045

4573

49

Fault localization

Path deletion

Topology discovery

Rerouting calculation

Alternative path setup

Time[ms]

Probably be able to shorten by router software improvement

Probably be able to shorten by router software improvement

Pre resource allocation (i.e. protection) may improve this Pre resource allocation (i.e.

protection) may improve this

Measured optical power during restoration process(two PXCs test)

-55

-50

-45

-40

-35

-30

0 1 2 3 4 5 6 7 8 9 10 11 12

Time [sec]

Opt

ical

pow

er [

dBm

]