Tom DeReggi wrote:
Anyone that can afford name brand high capacity unlicensed PTPs can
afford 60Ghz.
You can go 1/2 mile for under $10,000 with Proxim. Financed over 3
years will allow it to be paid for with the first T1 customer.
The problem is back hauling it :-) Not all WISPs will be in the
position to do that. Also take note that the metrix on shortest hop
routing may no longer be applicable. A 5 hop GB network at 2miles
each may be faster path than the 10 miles 10mbps backhaul. But what
happens the .5% of the time when the GB gets marginal? and the backup
slower 10 mile links perform better? And what happens when the link is
only as fast as the weakest link in a 5 hop path? It very well may
take smarter routing to handle the job than just OSPF, depending on
the SLA one needs to deliver. Because capacity and packet loss are the
metrix that need to be considered most.
If you define an LSP that matches your SLA then MPLS will select any
combination of layer 3 routes to encapsulate your customer's traffic.
This has the advantage of routing not based on distance metrics, but
instead using SLA driven metrics like latency, jitter, and packet loss.
-Matt
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