1 / 40

Optical Networks: Technical and Financial Issues

Optical Networks: Technical and Financial Issues. AREON Planning Meeting November 1, 2005 Little Rock, Arkansas David Merrifield University of Arkansas. Agenda. Optical network components Building an optical network Connecting to an optical network Campus network infrastructure Costs.

suchin
Download Presentation

Optical Networks: Technical and Financial Issues

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Optical Networks:Technical and Financial Issues AREON Planning Meeting November 1, 2005 Little Rock, Arkansas David Merrifield University of Arkansas

  2. Agenda • Optical network components • Building an optical network • Connecting to an optical network • Campus network infrastructure • Costs

  3. Optical Network Components Fiber optic cable

  4. Optical Network Components Transmitter Optronics to “light the fiber” Receiver

  5. Optical Network Components Transmitter Receiver Fiber pair required for bi-directional communications Receiver Transmitter

  6. Optical Network Components • Light amplification is required over long distances • influenced by fiber type, light loss, and optronics • 80-120km (50-75mi) spacing typical EDFA Erbium-Doped Fiber Amplifier Transmitter Receiver

  7. Optical Network Components O-E-O Optical-Electrical-Optical RCVR E L E C X M T R Transmitter Receiver • Signal regeneration is required over very long distances • influenced by fiber type, light loss, and optronics • 600km (375mi) spacing typical

  8. Wave Division Multiplexing Laser Rcvr • Single signal transmitted on a single fiber is relatively simple.

  9. Wave Division Multiplexing • Technique of placing multiple signals via different wavelengths onto a single fiber using FDM-Frequency Division Multiplexing Laser Rcvr Mux Mux Laser Rcvr Laser Rcvr

  10. Dense Wave Division Multiplexing (DWDM) Transmitter A ITU Ch. 1 l1 Receiver A l1 l2 Transmitter B ITU Ch. 2 l2 Receiver B 4-Ch. DWDM Mux 4-Ch. DWDM Demux l3 EDFA l3 Transmitter C ITU Ch. 3 Receiver C l4 l4 Transmitter D ITU Ch. 4 Receiver D A lambda (l) is a single wavelength.

  11. Optical Add/Drop Mux OADM OADM Single Fiber Filament Transmitter Receiver

  12. Optical Add/Drop Mux Transmitter A ITU Ch. 1 l1 Receiver A l1 l2 Transmitter B ITU Ch. 2 l2 Receiver B OADM OADM OADM l3 l4 Transmitter C ITU Ch. 3 Receiver D l4 l3 Transmitter D ITU Ch. 4 Receiver C OADMs provide means for creating “optical circuits.”

  13. Building a Regional Optical Network • Preliminary network design issues • Determine connecting sites • Determine route redundancy requirements • Anticipate future needs

  14. LOTA Ring

  15. AREON Backbone Conceptual

  16. AREON Backbone TULSA UARK ASU ATU UAFS UCA MEMPHIS UAMS UALR UAPB HSU UAM DALLAS SAU MONROE

  17. Building a Regional Optical Network • Research fiber availability and type • Obtain fiber IRUs (if possible) • Do fiber characterization • Identify lambdas necessary for applications • Engineer for Layer 1 & Layer 3 • Acquire and install equipment • Connect participant networks

  18. Building a Regional Optical Network • Contract with National LambdaRail members in neighboring states (LOTA) • Contract for commodity Internet through Quilt • Contract for Internet2/Abilene Network access

  19. Connecting to a Regional Optical Network • Local loop • Layer 1 and Layer 3 • Lambdas • Alternatives

  20. Connecting to a Regional Optical Network • Local loop • Backbone fiber provider already terminates at your PoP • Use a different fiber provider to reach the backbone • Fiber provider builds a lateral fiber to your PoP (or nearby) • Bury your own fiber to the backbone

  21. Connecting to a Regional Optical Network • Local loop Carrier Hotel Fiber Hand Hole Fiber Hut

  22. Connecting to a Regional Optical Network • Local loop • Costs can be significant • Right of way • Buried vs. aerial • Cable • Labor • $3 - $50 per foot 3 miles CAMPUS PoP 2 miles Fiber Hut

  23. Connecting to a Regional Optical Network • Layer 1 and Layer 3 AREON Backbone OADM AREON Backbone Fiber Local Loop Optical Research Lab Campus Optical Infrastructure

  24. Connecting to a Regional Optical Network • Layer 1 and Layer 3 AREON Backbone OADM AREON Backbone Fiber Local Loop Gigabit Ethernet Campus IP Network Campus Border Router

  25. Connecting to a Regional Optical Network • Lambdas • Identify locations that your campus network needs to communicate with • Determine bandwidth needs

  26. Connecting to a Regional Optical Network • Lambdas 10G 8xGE 2.7G 2xGE 2.7G OC-12

  27. Connecting to a Regional Optical Network • Is optical network connect what you need? • High entry cost • High maintenance costs • Realistic bandwidth expectations • Alternatives do exist • Leased ‘lit’ services (lambdas) • Standard carrier options (DS3, OC-3, …) • State network & SEGP

  28. Campus Network Infrastructure • Upgrades may be necessary to support high bandwidth • Determine core network needs • Determine border needs • Consider security needs as well • Plan for the future • Budget for maintenance and operations expenses

  29. Campus Network Infrastructure Firewall Force10 E300 Juniper T320 Building LANs

  30. Costs • Cost categories include: • State backbone buildout • Campus connection to backbone • Shared and dedicated lambdas • Campus network infrastructure upgrades • State backbone maintenance • Network operations • Organizational costs • SEGP membership • Internet and Internet2 bandwidth

  31. Costs • State backbone buildout • Backbone includes: • Tulsa to Fayetteville to Fort Smith to Little Rock • Little Rock to Pine Bluff to Monroe, LA • Additional fiber acquired: • Little Rock to Memphis • Memphis to Jonesboro • Little Rock to Texarkana to Dallas • Estimated cost: $7.75M (thru Dec 2007)

  32. Costs • Campus connection to backbone • Cost of fiber connection to nearest state backbone OADM site • varies substantially from site to site • requires engineering to determine full cost • Cost of optronics in OADM • Possible colocation costs

  33. Costs • Shared and dedicated lambdas

  34. Costs • Campus network infrastructure upgrades • Varies substantially from campus to campus • Recommend concentrating on two areas: • Gigabit ethernet in the core • Upgrading border router to support gigabit ethernet

  35. Costs • State backbone maintenance

  36. Costs • Network operations • Salaries & benefits of engineers • Equipment • Software • Training • Travel • Cost of doing business (office space, furniture, phones, etc.)

  37. Costs • Organizational costs • Salaries & benefits • Legal & auditing expenses • Consulting fees • Cost of doing business (office, furniture, equipment, phones, etc.)

  38. Costs • SEGP membership • Requires an Internet2 member sponsor • Access to Internet2/Abilene network is through member sponsor • SEGP annual fee • $30,000 + ($2,000 x no. of seats in House) = $38,000 for Arkansas

  39. Costs • Internet bandwidth • Quilt membership • Discounted Commodity Internet • Cost estimated under $50 / Mbps / month • e.g., 10 megabit = 10 x $50 x 12 = $6,000 annually • Internet2 bandwidth • UARK, UALR, UAMS share 45 Mbps today • ASU has separate OC-3

  40. Contact • David MerrifieldAssociate DirectorUniversity of ArkansasComputing Services155 Razorback RoadFayetteville, AR 72701dlm@uark.edu

More Related