Transcript - TERENA

SEEREN
A regional MPLS-based network in SE Europe
www.seeren.org
Jorge-A. Sanchez-P., Constantinos Kotsokalis - GRNET
Konstantinos Anagnopoulos, Panagiota Bosdogianni - ISTF
The SEEREN initiative is co-funded by the European Commission under the FP5 contract IST-2001-38830
Introduction
SEEREN: South-Eastern European
Research and Education Network
Built in 2003, operates through 2004
Funded by the E.C. under IST programme
Consortium includes: GRNET,
HUNGARNET/NIIF, RoEduNet, INIMA,
BIHARNET, ISTF (formerly ICTDA),
MARNET, AMREJ, DANTE, TERENA
http://www.seeren.org
TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004
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Objective
Ease the digital divide
Connect beneficiaries to GEANT
Create an infrastructure for e-Science applications
Support the advance of technical know-how in the area
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Topology
Beneficiaries
INIMA (Albania)
MARNET (FYR of Macedonia)
BIHARNET (Bosnia – Herzegovina)
AMREJ (Serbia – Montenegro)
ISTF (formerly ICTDA, Bulgaria)
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Physical Topology
Capacities
INIMA: 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 only
Equipment donation by Cisco (worth €120.000)
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Physical Topology (2)
Backbone provided by OTEGlobe after tender
Based on OTEGlobe’s MultiServices Platform (MSP)
MPLS-based
22 POPs world-wide
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Physical Topology (3)
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Logical Topology
2 VPNs
Intra-NREN traffic & traffic towards GEANT
Backup to RoEduNet
Used only when GRNET links to GEANT fail
Any-to-any eBGP sessions between the connected parties
Integrate with the MSP to create logical network
MSP functions as a “black-box”
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Logical Topology (2)
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Architecture
Carrier supporting Carrier – CsC
A way for service providers to allocate VPNs for other service providers
Sub-carrier’s customer traffic encapsulated in MPLS labels, thus eliminating
management complexity  LSPs extended to CEs
Labels exchanged not only within the MSP but also between PEs and CEs
(LDP or BGP+labels)
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Architecture (2)
Carrier supporting Carrier – CsC (cont’d)
Routes of the edge service provider or its clients are not propagated to the
core network
Removes 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
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Acceptance tests
Rude / Crude used (open-source software)
Client & server connected on the CEs when possible
Benchmarked 50%, 100%, 110% and 120% of each link’s capacity
Packet sizes varied in accordance to RFC-2544
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Acceptance tests (2)
Rude does not take into account (OSI) Layers 2-4 overhead
Calculations to generate all correct combinations required
Rude performs rounding!
Cross-checking generator and collector logs explains minor packet loss near
full capacity
Strange results (throughput slightly larger than theoretical) also explained by
rounding
TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004
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Acceptance tests (3)
Capacity Pkt size Pkts recvd Pkts OoS Pkts Lost Total bytes Throughput
50%
64
1071429
0
0
31071441
517844
50%
128
530892
0
82
49372956
822866
50%
256
264318
0
0
58414278
973527
100%
64
1798769
0
344088
52164301
863443
100%
128
1071418
0
10
99641874
1672000
100%
256
530974
0
0
117345254
1955820
(Mbps)
4,142752
6,582928
7,788216
6,907544
13,376
15,64656
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6
Real
4
Expected
64
128
256
Throughput (Mbps)
Throughput (Mbps)
10
0
(Mbps)
4,07812
6,539056
7,769528
8,156248
13,07812
15,539056
Real/Expected
102%
101%
100%
85%
102%
101%
Utilization: 100%
Utilization: 50%
2
Expected
509765
817382
971191
1019531
1634765
1942382
20
15
Real
10
Expected
5
0
512 1024 1280 1500
Packet size (Octets)
TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004
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128
256
512 1024 1280 1500
Packet size (Octets)
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Production stage
SEEREN performing very well
SLA 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!
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Conclusion
SEEREN extends GEANT to the Balkans
Is built on OTEGlobe’s MPLS-based MSP
Carrier supporting Carrier used
Multihop eBGP integrates with the MSP to create a mesh (logical
network)
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Credits
Technical work carried out by:
NREN APMs & colleagues
AMREJ: Slavko Gajin, Djordje Vulovic
BIHARNET: Edin Silajdzic
GRNET: Andreas Polyrakis
INIMA: Neki Frasheri, Dashamir Hoxha
ISTF: Vedrin Jeliazkov, Hristo Turlakov
MARNET: Goran Muratovski
RoEduNet: Octavian Rusu, George Bulescu, Cristian Orban
OTEGlobe
Kostas Anagnopoulos
Panagiota Bosdogianni
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http://www.seeren.org
Thank you for your attention!
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