Chrysostomos Tziouvaras

1
GRNET3 update

• Chrysostomos Tziouvaras
• Broadband Infrastructures Development Manager
• Greek Research and Technology Network
• CEF Workshop
• Prague, 29 May 2006

2
Migrating from GRNET2 to GRNET3

• The GRNET network at its current state (GRNET2)
  is built on leased DWDM lambdas for connecting IP
  routers
• The next generation GRNET network (GRNET3) will
  be built on owned (long term IRUs) DF links

3
Tenders for dark fibre

• A tender for acquiring 15-year IRUs was issued at
  February 2005
• For three regional links (blue lines)
• Budget 4,07MEuros
• Status contracts signed with OTE
• Another tender for acquiring 15-year IRUs was
  issued at February 2006
• For covering major Greek cities (green lines)
• Budget13,1MEuros
• Status contracts are to be signed within June
  2006

4
Specifications

• Single-mode fiber pair
• Availability 99
• Monitoring and failure reporting
• Failure recovery
• 3 days for repairing terrestrial links
• 20 days for repairing submarine links
• Maintenance downtime cannot exceed 6
  hours/year/link
• SLA for the optical characteristics of the DF
  links (attenuation, CD, PMD)
• Collocation services at terminal and intermediate
  sites
• Optionally
• G.655 fiber
• Automatic failure notification

5
Results

• Tender published at 2005 932 km of DF
• Optical transmission equipment deployment is
  underway
• Tender published at 2006 2157 km of DF
• To be delivered within 6 months after contracts
  will have been signed

Attenuation 0.32 dB/Km , 0.25 dB/Km
(submarine) CD G.652 -gt 16.5 ps/nm/km
(at 1550 nm) G.653 -gt 0 ps/nm/km
(at 1550 nm) PMD 0.050 ps/(Km)1/2
6
Equipment tenders

• A tender for acquiring optical transmission
  equipment for lighting the three regional DF
  links was published at September 2005
• Budget 375KEuros (including 3 years support)
• Status contract signed with Adva (Siemens
  Hellas)

7
Technical offer I

• FSP2000 with DWDM lambdas
• Passive components
• 4 lambda mux/demux _at_C-band
• Upgrade up to 32 lambdas in steps of 4
• Multirate Transponders
• 3R
• Support all data rates from 100Mbps to 2,5Gbps
• Transparent interfaces
• Can be used as regenerator
• Ability to create loops (local and line sides)
  through NMS
• ALS support

8
Technical offer II

• Network Element Management Interface (NEMI)
• Manages all active components
• Optical Supervisory Channel (OSC)
• Path for communicating management traffic between
  FSP2000 nodes and the NMS
• Extra lambda at 1630nm
• Full duplex 100Mbps Ethernet
• Optical input power measurement
• Fiber degradation monitoring at 1630nm
• Fixed Gain C-band EDFAs
• All lambdas get the same amplification

9
Technical offer III

• The Athens-Chania case submarine link featuring
  2 spans of about 170km

10
RFI for optical switching equipment

• In order to prepare forthcoming tender for
  lighting DF links covering the rest Greek cities,
  an RFI was published
• Focusing on
• products and architectures that could enable
  automatic L1/2 circuit provisioning to selected
  GRNET clients (e.g. Grid nodes)
• 13 manufacturers responded to this RFI

11
RFI results I

• Types of boxes that could be used for automatic
  L1/2 circuit provisioning
• NG-SDH switches typical SDH switches (VC-x based
  switching fabric) with data (1/10GbE)
  capabilities.
• ROADM. Switch (OOO or OEO) based on lambda
  without sub-lambda processing
• Hybrid. Use linecards with VC-x grooming and
  include ROADM card

12
RFI results II

• NG-SDH switches highlights
• Nx1GbE client signals aggregation is supported in
  two ways
• Each 1GbE client signal is mapped to an
  appropriately sized VCG (full line rate)
• 1GbE client signals are aggregated through a line
  card featuring L2 capabilities and are mapped to
  smaller size VCGs. Mapping can be based on MPLS,
  802.1Q.
• Most manufacturers support both options
• Relevant standards (GFP/VCAT/LCAS) are followed
• Jumbo frames support

13
RFI results III

• Currently, most manufacturers do not support a
  control plane for automating circuit provisioning
• Roadmaps include control plane support
  (especially GMPLS) by early 2007

14
Future plans

• Further extension of the DF backbone (tender to
  be published within 2006)
• Enable GRNET clients access to the DF cloud
  through
• Acquiring IRUs for clients located in Athens and
  Thessaloniki (tender to be published within 2006)
• Utilising Municipal Fibre Networks (MFNs) that
  are currently built in most Greek cities
  expected to be available by mid 2007
• CBF interconnection

15

• Thanks!!!