Experimental Demonstration of OpenFlow Control of

Packet & Circuit Switches

Vinesh Gudla, Saurav Das, Anujit Shastri,Guru Parulkar, Nick McKeown, Leonid Kazovsky

Stanford University

Shinji YamashitaFujitsu Laboratories, Japan

http://www.openflowswitch.org/wk/index.php/PAC.C

http://openflowswitch.org

2

Controller

OpenFlow Switch

FlowTableFlowTable

SecureChannelSecureChannel

OpenFlow

Protocol

SSL

hw

sw

OpenFlow Switching

• Add/delete flow entry• Encapsulated packets• Controller discovery

A Flow is any combination of above fields described in the Rule

ControllerFlow Example

OpenFlowProtocol

Rule Action Statistics

Rule Action Statistics Rule Action Statistics

A Flow is the fundamentalunit of manipulation within a switch

Routing

Video Clients Video Server

OpenFlow Testbed

192.168.3.12192.168.3.10λ1 1553.3 nm

λ2 1554.1 nm

192.168.3.15

OpenFlowController

OpenFlow Protocol

GE to DWDM SFP convertor

GE

O-E

NF2

GE

E-O

NetFPGA based OpenFlow packet switch NF1

25 km SMF

to OSA

to OSA

AWG

WSS based OpenFlow circuit switch

1X9 Wavelength Selective Switch (WSS)

An Open Platform for Gigabit-Rate Network Switching and Routing. A complete network hardware platform implemented with FPGA logicwww.netfpga.org

6

Grating Lens

FiberCollimatorArray

IN

OUT

MEMS Mirror Array

OUT2

IN

OUT1

IN

Switching outputport by tilting MEMS mirror

Output

Input 2

5

63

41

DEMUX MUXSW1

2

3

7

7

2

5

6

3

4

1

7

Control

WSS

Openflow Circuit Switch

25 km SMF

OpenFlow packet switch OpenFlow packet switch

GE-Optical

GE-Optical

Mux/Demux

Lab Setup

Video Clients Video Server

OpenFlow Testbed

192.168.3.12192.168.3.10λ1 1553.3 nm

λ2 1554.1 nm

192.168.3.15

OpenFlowController

OpenFlow Protocol

GE to DWDM SFP convertor

GE

O-E

NF2

GE

E-O

NetFPGA based OpenFlow packet switch NF1

25 km SMF

to OSA

to OSA

AWG

WSS based OpenFlow circuit switch

1X9 Wavelength Selective Switch (WSS)

Measurements

/* Description of a physical port */struct ofp_phy_port {

uint16_t port_no;uint8_t hw_addr[OFP_ETH_ALEN]; /* 00:00:00:00:00:00 if not an Ethernet port */uint8_t name[OFP_MAX_PORT_NAME_LEN]; /* Null-terminated*/

uint32_t config; /* Bitmap of OFPPC_* flags */uint32_t state; /* Bitmap of OFPPS_* flags */

/* Bitmaps of OFPPF_* that describe features. All bits zeroed if * unsupported or unavailable. */

uint32_t curr; /* Current features. */uint32_t advertised; /* Features being advertised by the port. */uint32_t supported; /* Features supported by the port. */uint32_t peer; /* Features advertised by peer. */

 uint16_t supp_swtype; /* Bitmap of switching type OFPST_* flags */unit16_t peer_swtype; /* Bitmap of peer’s switching type */uint32_t supp_sw_tdm_gran; /* TDM switching granularity OFPTSG_* flags uint32_t peer_sw_tdm_gran; /* Bitmap of peer’s switching granularity */unit64_t bandwidth1; /* Bitmap of the OFPCBL_* or OFPCBT_* flags */uint64_t bandwidth2; /* Same type as supp_bandwidth1 */

};OFP_ASSERT(sizeof ( struct ofp_phy_cport) == 80);

Wavelength Switch Port

SONET/SDH Switch Port (OC-768 line rate)

ITU grid Frequencies supported

ITU grid Frequencies currently being used

/*Description of a cross-connection*/struct ofp_connect{

uint16_t wildcards; /* identifies which two ports to use below */uint16_t num_components; /* identifies number of cross-connect to be made uint8_t pad[4]; /*– ie. num array elems*/

 uint16_t in_port[0]; /* OFPP_* ports – real or virtual */uint16_t out_port[0]; /* OFPP_* ports – real or virtual */

 struct ofp_tdm_port in_tport[0]; /* description of TDM channel */ struct ofp_tdm_port out_tport[0];

 struct ofp_wave_port in_wport[0]; /* description of lambda channel */struct ofp_wave_port out_wport[0];

};OFP_ASSERT(sizeof(struct ofp_connect) == 8 );

/* Description of a TDM port */struct ofp_tdm_port {

uint16_t tport;uint16_t tstart; uint32_t tsignal;

};

/*Description of a wavelength port */struct ofp_wave_port {

uint16_t wport;uint8_t pad[6];uint64_t wavelength

};

TrafficEngineering

Example Application

TrafficEngineering

Example Application

..via Dynamic Automated Optical Bypass

Controller

OpenFlowprotocol

AWGWSS(1×9)

AWG Fujitsu WSS basedOF circuit switch

Ethernet

Hosts

NOX

WSS(1×9)

NetFPGA basedOF packet switch

More Applications• Integrated network recovery

• Service classification and Quality-of-service- Identify aggregated packet flows & classify them- some take all packet paths, all circuit paths, or mix of circuit/packet paths- some allocated different levels of bandwidths, some unallocated

• In - Datacenter – variable bandwidth between clusters

• Unified slicing of network resources – both packet & circuit

• Integrated routing

Summary• OpenFlow is a large clean-slate program with many motivations and goals

• convergence of packet & circuit networks is one such goal

• OpenFlow simplifies and unifies across layers and technologies

• packet and circuit infrastructures• electronics and photonics

• and enables new capabilities in converged networks• with real circuits or virtual circuits

• Next Demos• larger demo of QoS capabilities enabled in converged networks• business models for ISPs and TSPs enabled by unified virtualization