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Transcript of Www.seeren.org SEEREN The SEEREN initiative is co-funded by the European Commission under the FP5...
The SEEREN initiative is co-funded by the European Commission under the FP5 contract IST-2001-38830
www.seeren.org
SEEREN
A regional MPLS-based network in SE Europe
Jorge-A. Sanchez-P., Constantinos Kotsokalis - GRNETKonstantinos Anagnopoulos, Panagiota Bosdogianni - ISTF
TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 2
Introduction
SEEREN: South-Eastern European Research and Education Network
Built in 2003, operates through 2004Funded by the E.C. under IST programmeConsortium includes: GRNET, HUNGARNET/NIIF, RoEduNet, INIMA, BIHARNET, ISTF (formerly ICTDA), MARNET, AMREJ, DANTE, TERENAhttp://www.seeren.org
TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 3
Objective
Ease the digital divideConnect beneficiaries to GEANTCreate an infrastructure for e-Science applicationsSupport the advance of technical know-how in the area
TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 4
Topology
BeneficiariesINIMA (Albania)MARNET (FYR of Macedonia)BIHARNET (Bosnia – Herzegovina)AMREJ (Serbia – Montenegro)ISTF (formerly ICTDA, Bulgaria)
TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 5
Physical Topology
CapacitiesINIMA: 2 Mbps (1xE1)MARNET: 4 Mbps (2xE1)BIHARNET: 2 Mbps (1xE1)AMREJ: 34 Mbps (1xE3)ISTF: 18-34 Mbps (ATM, shaped, 24 Mbps median throughout the project)RoEduNet (backup link): 34 Mbps (ATM, shaped)
Terrestrial links onlyEquipment donation by Cisco (worth €120.000)
TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 6
Physical Topology (2)
Backbone provided by OTEGlobe after tenderBased on OTEGlobe’s MultiServices Platform (MSP)
MPLS-based22 POPs world-wide
TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 7
Physical Topology (3)
TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 8
Logical Topology
2 VPNsIntra-NREN traffic & traffic towards GEANTBackup to RoEduNet
Used only when GRNET links to GEANT fail
Any-to-any eBGP sessions between the connected partiesIntegrate with the MSP to create logical network
MSP functions as a “black-box”
TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 9
Logical Topology (2)
TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 10
Architecture
Carrier supporting Carrier – CsCA way for service providers to allocate VPNs for other service providersSub-carrier’s customer traffic encapsulated in MPLS labels, thus eliminating management complexity LSPs extended to CEsLabels exchanged not only within the MSP but also between PEs and CEs (LDP or BGP+labels)
TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 11
Architecture (2)
Carrier supporting Carrier – CsC (cont’d)Routes of the edge service provider or its clients are not propagated to the core networkRemoves from the clients the burden of configuring, operating and maintaining their backbone’s connection to the core network
TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 12
Acceptance tests
Rude / Crude used (open-source software)Client & server connected on the CEs when possibleBenchmarked 50%, 100%, 110% and 120% of each link’s capacity Packet sizes varied in accordance to RFC-2544
TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 13
Acceptance tests (2)
Rude does not take into account (OSI) Layers 2-4 overheadCalculations to generate all correct combinations required
Rude performs rounding!Cross-checking generator and collector logs explains minor packet loss near full capacityStrange results (throughput slightly larger than theoretical) also explained by rounding
TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 14
Acceptance tests (3)
Capacity Pkt size Pkts recvd Pkts OoS Pkts Lost Total bytes Throughput (Mbps) Expected (Mbps) Real/Expected50% 64 1071429 0 0 31071441 517844 4,142752 509765 4,07812 102%50% 128 530892 0 82 49372956 822866 6,582928 817382 6,539056 101%50% 256 264318 0 0 58414278 973527 7,788216 971191 7,769528 100%100% 64 1798769 0 344088 52164301 863443 6,907544 1019531 8,156248 85%100% 128 1071418 0 10 99641874 1672000 13,376 1634765 13,07812 102%100% 256 530974 0 0 117345254 1955820 15,64656 1942382 15,539056 101%
Utilization: 50%
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64 128 256 512 1024 1280 1500
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Utilization: 100%
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Packet size (Octets)
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TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 15
Production stage
SEEREN performing very wellSLA reports: 100% availability for all links for the last 3 months
CsC not hindered by heterogeneity of CEs (7500, GSR, Cat6500 w/ MFC2, others)Collaborative management
Stay tuned for Octavian Rusu’s (RoEduNet) presentation!
TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 16
Conclusion
SEEREN extends GEANT to the BalkansIs built on OTEGlobe’s MPLS-based MSPCarrier supporting Carrier usedMultihop eBGP integrates with the MSP to create a mesh (logical network)
TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 17
Credits
Technical work carried out by:NREN APMs & colleagues
AMREJ: Slavko Gajin, Djordje VulovicBIHARNET: Edin SilajdzicGRNET: Andreas PolyrakisINIMA: Neki Frasheri, Dashamir HoxhaISTF: Vedrin Jeliazkov, Hristo TurlakovMARNET: Goran MuratovskiRoEduNet: Octavian Rusu, George Bulescu, Cristian Orban
OTEGlobeKostas AnagnopoulosPanagiota Bosdogianni
TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 18
http://www.seeren.org
Thank you for your attention!