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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Sonet protection usage
I might point out that Global Crossing does lay out their paths as rings including under sea cables. http://www.globalcrossing.com/net_ac1.htm for us to europe http://www.globalcrossing.com/net_pc1.htm for US to japan. SOnet circuits for the most part, are set up as protected rings with full redundancy. Specing APS does not cost the carrier the same as two circuits since each of the SONET circuits are speced with a full protection path. Two circuits would end up with two working and two protect paths using up twice as much SONET capacity. The request for APS usually only effects the connection from the SONET MUX to the router. NOTE the above only applies to SONET circuits not to DWDM lambdas. -jonp On Wed, 26 Jul 2000 07:10:52 -0400, William Allen Simpson <[email protected]> wrote: > >> Well-engineered trans-oceanic links are laid such that there are at least >> two conduits running parallel >> some large distance apart. >> >And which are those? I was unaware that any were laid that way. My >information is dated on that topic, tho'. (The only one I ever viewed >was pre-optical.) > > >> Or you can run 1+1 IP Bonded interfaces and achieve the same effect ;-) >> >Unless it has vastly improved since I last tried it, bonding does not >work well over diverse paths, due to timing differences. > >[email protected] > Key fingerprint = 17 40 5E 67 15 6F 31 26 DD 0D B9 9B 6A 15 2C 32 > > -- Jonathon N. Plonka VP IP Engineering,Global Crossing [email protected]
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