gr net greek research & technology network grnet.gr/index_en.html

GRNET March 2001

GRNETGreek Research & Technology

Network http://www.grnet.gr/index_en.htmlTryfon K. Chiotis

[email protected] Dimitrios K. Kalogeras [email protected] Fotis Karayannis [email protected] Yiannis Skopoulis [email protected]

GRNET March 2001

GRNET• NRN: Greek Research Network General Secretariat of Research &

Technology (Ministry of Development)

• Interconnects: 55 Institutions (Universities, Research Centers, Technological Institutions) with 150.000 Internet users

• Operates Athens Internet Exchange - AIX

GRNET March 2001

International Collaboration• TEN-155 / GEANT

Athens PoP 2x155 Mbps

• MEDNET Regional R&E - 12 Non-EU Members Mediterranean Countries

• Internet2 International Member

• Balkan Regional Network (Bulgaria, FYROM, Rumania, Albania, Serbia)

GRNET March 2001

National Initiatives• Real time services• IPv6 support• MPLS• Multicast• Directory service – LDAP• ATM MBS (Managed Bandwidth

Service)• Monitoring tools (http://netmon.grnet.gr)

GRNET March 2001

TF-NGN Synergy• MPLS test-bed• Over-provisioned network

performance analysis• Optical networking• Diffserv Service definition proposal

for transantlantik links• Multicast• Flow monitoring

(http://nfa.grnet.gr/graphs/overview)

GRNET March 2001

Upcoming services• Large scale conference

• Directories for access to GRNET2

• PKI

• IP QoS

• High-school integration

• GRID platform (e.g. Interconnection of High Energy Physics PC farms)

• More IPv6 services (dns, www, etc)

GRNET March 2001

GRNET2 Upgrade Study• Extensive market and NRN deployment

research• Design principles definition

– Native IP Qos support– Native MPLS (VPN, TE, GB –TE)– Native IPv6 support

• Optical DWDM upgrade (GigE MAN, Partial Mesh WAN)– N x 2.5 Gbps speeds– Gigapop in three cities– DWDM international connections

GRNET March 2001

Service Oriented• Multicast (Native, PIM-SM anycast RP)

– 1 Line TV station and 4 Live radios

• Infrastructure for digital content distribution (e.g. Digital Libraries)

• Videoconferencing, H.323, MCUs – Distance Learning – Gigaconference - participant

• VoD (Media base, etc)

• IPv6 tunneled backbone (pTLA, sTLA assigned) 7 intl. Peering (NTT, 3Com, Sprint, BT, Switch, etc), Online automatic pTLA connectivity diagram)

• Academic Directory service

GRNET March 2001

WAN layout

N x 2 .5 G bps P oSN x 622 M bps / 2 .5G bps P oSN x 622 M bps / 2 .5G bps P oS (backup)

Athens

Crete

ThessalonikiXanthi

Ioannina

Larissa

Patra

GRNET March 2001

GRNET2 progress• Baseline Network Design for Athens, Crete

and Thessaloniki GigaPoP and other PoPs• Baseline Connectivity Requirements for

WAN • Contract signed at the end of 2000 with

Greek Incumbent Network Operator (Hellenic Telecommunications Organization-OTE S.A.) for λ service provisioning in Athens GigaPoP

• Currently under negotiation with OTE for λ service provisioning in other MANs and WAN

• Tender preparation for Athens GigaPoP IP equipment

GRNET March 2001

GRNET MAN Requirements (1)

• Mandatory/Desirable requirements• Fiber infrastructure

– >= G.652 (Dispersion Un-shifted Fiber)– Testing tools for optical parameters’

measurement– 2 optical paths for each access node– avoid Single Points of Failure– Access node distance from WDM core

< 10 km– Support for 15 Access Nodes

GRNET March 2001


• WDM Networking equipment – Frame+bit-rate independent all-optical λ

service– Co-location of GRNET IP equipment with WDM– 2,5 Gbps physical ring upgradable to 10 Gbps– Wavelength Adaptation capable (via

transponders)– Spare λ for testing purposes– Embedded system upgradeable– Multiple frames in a single wavelength (D)– Optical switching/conversion (D)– Support of “Digital Wrapper” (D)

GRNET March 2001


• WDM Management System – EML and NML functionality– Access to the Management System (read-

only for production services, full access for testing/trials)

– Standard northbound interfaces (EML, NML) –SNMP (M), IDL, Q3

– GUI for read-only and/or write access– Configuration: provisioning, end-to-end path

management– Fault: Alarm logging, reporting, filtering,

localisation (D), correlation (D)– Performance: monitoring, logging, threshold

crossing alarm reporting

GRNET March 2001

Athens MAN WDM network (1)

λ Service Provider building/ WDM equipment

GRNET IPEquipment

GRNET Customers’ Equipment (Universities, Research Institutes)

GRNET March 2001


• Core WDM Network composed of a ring of re-configurable OADMs– 80 km optical ring with 10 OADMs (no

regeneration)– 2,5 Gbps ports (upgradeable to 10Gbps)– 1-32 λ per node– 100 Ghz spacing– Add/drop up to

• 160 Gbs (upgradeable to 640 Gbps)• 25%,50%,100%

– Tx/Rx Line - up to• 80 Gbps East (upgradeable to 320 Gbs East)• 80 Gbs West (upgradeable to 320 Gbs East)

GRNET March 2001


– Multi rate (up to 2,5 Gbps) 3R Transponders supporting Gigabit Ethernet, SDH frames, ATM etc. including 24 Transponder Shelf

– Offers OCh SNC protection – will not be used by GRNET

– Network Management System – Access to the NMS is negotiable

• Configuration Management– End-to-end OCh SNC provisioning

• Fault Management– Alarm Reporting/Filtering

• Performance Management– Client layer monitoring– Future upgrade will support Digital Wrapper

• To be delivered October 2001

GRNET March 2001

Athens GRNET GigaPoP(1)

Physical λ Provider Ring

Unprotected VPNsfor GRNETcustomersProtected access forGRNET Customers

GRNET CoreNodes

GRNET CustomerAccess Node

GRNET LogicalRing

GRNET March 2001

Athens GRNET GigaPoP(2)• Access Network

– Gigabit Ethernet for GRNET Customers’ Access

– Protected Access (e.g. IEEE 802.1d spanning – tree)

• Core Network - 2,5 Gbps– 2 x 1 Gigabit Ethernet– DPT/SRP 2,5 Gbps– PoS 2,5 Gbps

• Customers’ VPNs– Gigabit Ethernet– ATM– Other

GRNET March 2001

Athens GRNET GigaPoP(3)GRNET GRNET

GRNET

GRNET

GRNET

GRNET

GRNET

GRNET

Athens GigaPoP

AccessRouter

Core Router

GigE Switch

GRNET March 2001

Internet2 collaboration• Videoconference

– H.323, Megaconference

• Middleware – DEN -> access Gigabit Infrastructure– PKI for High Schools and Universities

• Engineering – QoS service definition, Multicast, IPv6

• Advanced Application– Digital Libraries, Voice over IP, Dig. Video– Health science knowledge diffusion– Grid

GRNET March 2001

Thank You!

GRNET March 2001

GRNET2 specs.• λ dimensioning (supporting multiple

framing)

• Metro DWDM– Optical VPNs– MPλS– No framing - No regeneration– No protection (MPLS & OSPF)

• Long haul DWDM– SDH framing & regeneration– No protection (MPLS & OSPF)

GRNET March 2001

Gigapop general overview

Custom erNetw ork

G igabit E thernet Sw itchC ustom er N etwork

Access R outer(M PLS C E)

GigaPoP

G igabit E thernet AccessSw itch

G igabit R outer(M PLS P)ΑΤ Μ Access

Sw itch

W AN / M AN

W D MAD M

W D M AD M

W D MAD M

Backbone

G R -N et AccessR outer (M PLS PE)

W AN / M AN

W ave leng th

W ave leng thW ave leng thW ave leng th

G igab it E the rne tΑ ΤΜ 155 M bps

P oS 2 .5 G bps

GRNET March 2001

Distributed Gigapop (MAN)

G R -N et accessrou ter (M P LS PE )

G igab it R outer (M P LSP )

D W D MA D M

Gig

abit

Eth

erne

tsw

itch

G R -N et accessrou ter (M P LSP E )

W A NG R -N et

C ustom er networkaccess router

O ther networks 'adm in istra tivedom ains

O TEadm in istra tivedom ain

GRNET March 2001

Conventional Pop

Othernetwork


O ther networkaccess router (M PLS

C E)

ConventionalPoP


ΑΤ Μ AccessSw itch

W D MAD M

W D M AD M

W D MAD M

Backbone

G R -N et AccessR outer (M PLS PE)

W ave leng th

W ave leng thW ave leng thW ave leng th

G igab it E the rne tΑ ΤΜ 155 M bps

P oS 622 M bps /2 .5 G bps

GRNET March 2001

Balkan Regional Network

INIMA

MARNET

UNICOM-B

RoEduNet/

RNC

GEANT

2 M bps10 M bps34 M bps

155M bps

GRNET

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