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Workshop: Delivering IP over Glass
Getting the Most out of Glass
Dr.
Norman Swenson
VP, Research and Development
Kestrel Solutions
Description:
IP on glass networks can be architected in a variety of ways depending on
demands, traffic flow, and available infrastructure. Placing large IP routers at every
node to aggregate traffic can be a workable option if every node has very large demands.
However, in most cases (especially in the metropolitan market), many nodes will require
only a small fraction of the overall demand. For those cases, a smaller router at each
node with a large central router can be a better option.
Once the decision has been made that smaller routers are the best option, the problem of transporting IP traffic between nodes and from the nodes back to the central routing location becomes one of getting the most out of your glass. Several options for transporting the traffic exist, and each has benefits and shortcomings. Multiple fibers can be deployed to carry the traffic, SONET multiplexers can be used to TDM aggregate the data streams together, DWDM can be used to put each data stream on a wavelength, or Optical FDM can be used to transparently multiplex the signals onto a single wavelength.
In this presentation, the benefits and shortcomings of each strategy will be analyzed and presented, with factors ranging from port density to reconfigurability to bandwidth efficiency considered.