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Technical paper Packet over SO
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2010-07-14
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Packet over SONET/SDH (POS) was
first deployed in 1996 at 155 Mb/s, and
has since become a key protocol
standard for building large internet
protocol (IP) backbones. Networks
worldwide now carry POS traffic at
line rates of 622 Mb/s and 2.5 Gb/s to
accomodate the explosion in internet
traffic. This technology note examines
the key features of POS, focusing on
layers 1 and 2 where the hardware
processing takes place.
first deployed in 1996 at 155 Mb/s, and
has since become a key protocol
standard for building large internet
protocol (IP) backbones. Networks
worldwide now carry POS traffic at
line rates of 622 Mb/s and 2.5 Gb/s to
accomodate the explosion in internet
traffic. This technology note examines
the key features of POS, focusing on
layers 1 and 2 where the hardware
processing takes place.
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