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Thoughts about Equipment. Ken Goodwin Pittsburgh Supercomputing Center Quilt Fiber Workshop Aug 21-23, 2004. This talk…. Anything I can tell you about any particular piece of gear is probably outdated by the time you get home. So this will be some general observations…. Remember.

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Thoughts about Equipment

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Thoughts about equipment l.jpg

Thoughts about Equipment

Ken Goodwin

Pittsburgh Supercomputing Center

Quilt Fiber Workshop

Aug 21-23, 2004


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This talk….

  • Anything I can tell you about any particular piece of gear is probably outdated by the time you get home.

  • So this will be some general observations….


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Remember

  • Optical Networking is very similar to analog circuits.

    • It is not simple as ones and zeroes

    • Amplification(loss), dispersion

  • Life is getting easier with VOAs, tunable filters, better simulators, etc.

    • But it is not plug-n-play.


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Lot’s of work before the PO

  • What do you want – OADM sites, speeds, channels, distances

  • Ask, demand, insist on getting complete fiber characteristics…..distance, loss, dispersion, etc

  • Get these to your vendor for final analysis.

    • Especially important if you are nearing the edge of “the zone.”


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Before the PO (cont.)

  • DWDM vendors use configurators/simulators to generate a BOM.

    • Garbage in->Garbage out, Good information in-> Light out

    • Vendors starting to release these tools to customers.


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Equipment

  • Part number soup

  • Don’t assume that normal management interfaces exist.

    • Equipment is from the Telco arena… TL1 interface is much more developed than SNMP.

    • Use the GUI. Command line is minimal.

  • Installation is extra. Might be worth the cost.


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Due Diligence

  • Get in writing

    • Current design and future growth.

    • What is included or more importantly what is NOT. (cables, power lugs, etc.)

    • Configuration (cabling and params)

  • Lab trial (if necessary) or preproduction

    • Disaster recovery as well as config and operation


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Install

  • REMEMBER! Telco DC power is positive ground.

  • If installing into a Telco PoP, buy the tech lunch, after-work beer, sports cars, etc. -- You will need him to like you…… a lot.

  • QA the install yourself in addition to any other checks.


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Install/Post-install

  • High speed transponders, pre-amps, etc don’t grow on trees….. Getting replacement parts may be a problem.

  • Monitor system for degradation. This can be the canary…..


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