© Ciena

What can You do with an

Error-Free 100G Pipe?

Kim Roberts November 2011

2 © Ciena

A Big Pipe, Anywhere You Want

100G coherent is now ubiquitous.

Transoceanic 100G, and regional 400G

end 2012 / early 2013

Wavelength Selective Switching

3 © Ciena

Zero Packet Loss

Forward Error Correction (FEC)

Does not require retransmission

5 to 40 ms FEC delay at 100G

Predicted bit error rate <10-20

Can expect random packet loss rates ~ 10-14

Memory faults, RAID errors, etc are more probable.

Packets can still be lost due to equipment failure or fiber cuts

Switch availability of 99.9999%

Typical fiber route has 2 cuts per year per 1000 km

Fix the calculation if you lose one packet!

4 © Ciena

Minimum and Constant Latency

Minimum physical path length

no satellite connections, a direct fiber route.

no dispersion compensating fiber coils, at 50 ms per coil.

Minimum Buffering

Layer 1 connection, with no packet queues.

FEC rather than ARQ, so no ARQ buffer delays

Zero Jitter

Physical layer jitter is minimal

No queuing jitter

5 © Ciena

Eliminate the Remaining Bottlenecks

Network Interface Card?

TCP Obsolete!

Create protocols designed for these pipes

Zero random packet loss, jitter, out-of-order packets

Very large number of packets in flight

500 MBytes in one round trip time

Handle line faults and storage faults

What can you accomplish with full 100Gb/s transfers?

1 PB/day for your application!