1

CHEETAH's use of DRAGON

DRAGON software (current usage) RSVP-TE for an end-host client

VLSR for a CVLSR to support immediate-request calls

DRAGON network (proposed work) Run web caches on DRAGON PoP hosts

Interconnect CHEETAH to DRAGON network via IP routers

Malathi VeeraraghavanUniversity of Virginia

August 23, 2006

2

CHEETAH network

Raleigh PoP (MCNC)

Controlcard

GbE/10GbEcard

ORNL PoP

Controlcard

GbE/10GbEcard

SN16000

Controlcard

OC192card

OC-192

GbE/10GbEcard

End hosts

Atlanta PoP (SOX/SLR)

SN16000 SN16000

GaTech

End hosts

End hosts

ORNL

OC192card

NCSUOC192card

OC-192 (via NLR/SLR/NCREN)

via NCREN

UVa

CUNY Via Nysernet/HOPI Via Vortex/HOPI

3. Sycamore GMPLS implementation

2. Circuit-requestor code implements RSVP-TE

4. Immediate-request calls dynamically setup/released - distributed bandwidth management

1. Build a scalable GMPLS network

5. Applications: eScience + commercial: web caching, video & storage

6. Web caching: Breaks up long TCP connection into two short TCP connections + one wide-area CHEETAH circuit

1Gb/s circuit

3

Circuit/Virtual-Circuit technologies

eScience networks

Commercial networks

Raison d'etre

High-throughput connectivity between a few facilities

Moderate-throughput connectivity between millions of users

Key goal

QoS-guaranteedconnectivity

Bandwidth sharing(different style from TCP based sharing)

Call duration

Long-held Short-duration

Reach End-to-end Partial (HOV lanes)

4

My interest in moderate-BW applications/IR mode: SCALABILITY; Metcalfe's law re. value of networks

Mean waiting time is proportional to mean call holding time Can afford to have a queueing based solution if calls are short

Large m Moderate throughput Small m

Short calls Long callsBank teller Doctor's office

High throughput

immediate-requestwith call blocking + retries("call queueing")(video, gaming)

immediate-requestwith delayed-start times(file transfers)

book-ahead

m is the link capacityexpressed in channelse.g., if 1Gbps circuitsare assigned on a 10Gbps link,m = 10

Bandwidth sharing modes

5

Proposed DRAGON use for web caching

Would like to run squid web caching software on DRAGON and HOPI PoP hosts

First step: Preconfigure VLANs and test web caching

Next step: Run CVLSR or VLSR + CSPF PCE in hop-by-hop mode

for short-lived, moderate-BW VLANs across DRAGON Call setup delay with SNMP: 149ms; CLI adds 80ms

(open SecureCRT) CUNY report Demo/test:

Use circuits between web caches through just the DRAGON network

6

CHEETAH evolution: add IP routers with channelized OCxx cards to support sub-Gb/s circuits

Raleigh PoP

Controlcard

OC192card

ORNL PoP

Controlcard

OC192card

SN16000

Controlcard

OC192card

OC-192

End hosts

Atlanta PoP

SN16000 SN16000

GaTech

End hosts

End hosts

ORNL

OC192card

NCSUOC192card

OC-192 (via NLR/SLR/NCREN)

UVa

CUNY

OC192card

GbE

GbE

GbE

GbE

GbE

GbE

GbE

GbE

7

Proposed interconnection of CHEETAH to DRAGON & HOPI - via IP routers

McLean, VA

10GbE

CHEETAH

HOPI network: courtesy, Rick SummerhillDRAGON: courtesy, Jerry Sobieski

NC

GATN

Webcache

Webcache

Webcache

Webcache

Webcache

Webcache

Webcache

Webcache

VLAN

MPLS

SONET

MCLN

DCGW

ARLG

DCNE

UMD

ISI East

CLPKWeb

cache

Webcache

VLAN

DRAGON

8

Opportunity missed if the whole optical testbed community only experiments with BA

What opportunity? Enable the creation of large-scale circuit/VC

networks with moderate-rate circuits that can support a brand new class of applications economic value for the telcom industry

A "reservations-oriented" mode of networking to complement today's connectionless Internet ala airlines that complement roadways

Could prove useful to FIND, GENI, net-neutrality Alternative pricing models for bandwidth

9

What "brand new class of applications?"

Video, video, video: Video-telephony, conferencing, elearning,

entertainment, surveillance

Gaming Remote software access + Sync.

storage Async storage Multimedia (large) files in web sites