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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical RE: RE: long distance gigabit ethernet
Good point. We operate 2 long haul native Gbe networks - one 350km the other 1500km Tinming and jitter means that we have to do 3R regen with ethernet switches after every 3 hops I suspect with native 10Gbe you will run into a lot of dispersion problems on long haul. Bill ----------------------------- Bill St. Arnaud Senior Director Network Projects CANARIE Inc www.canarie.ca/~bstarn > -----Original Message----- > From: [email protected] [mailto:[email protected]]On Behalf Of > Frank Coluccio > Sent: Friday, March 22, 2002 11:37 AM > To: [email protected] > Cc: [email protected]; [email protected] > Subject: Re: RE: long distance gigabit ethernet > > > > > > > Forget it [Gbe] with today's technology. All long haul > > systems use SONET framing. But with the 10Gbe standard > > WAN PHY you can directly connect into a SONET > > transponder and your ethernet will be carried transparently. > > > > Agreed, for the most part, especially when one is solely dependent on the > incumbent carriers. I should point out, however, that some > commercial enterprises > are leasing their own lambdas from dark fiber providers who are > running native > GbE on their regional routes, both linear and ring-based, and > those nets are > becoming rather expansive. One such network that I am intimately > familiar with > now encompasses six northeastern states, and counting, adding > segment after > segment. Jitter on the larger ring circumferences? Yes, you > betcha. Compensated > for by either 3R regen or Layer 2 switching techniques or some > other opaque- > inducing means. > > When such routes are actually available and justifiable, the > business problem > then centers on risk assessment. I.e., will those fiber carriers > continue to be > viable for the foreseeable future? And so it goes... > > FAC > > > > > ----------------------------- > > Bill St. Arnaud > > Senior Director Network Projects > > CANARIE Inc > > www.canarie.ca/~bstarn > > > > > -----Original Message----- > > > From: [email protected] [mailto:[email protected]]On Behalf Of > > > Greg Pendergrass > > > Sent: Friday, March 22, 2002 10:36 AM > > > To: '[email protected] Edu' > > > Subject: long distance gigabit ethernet > > > > > > > > > > > > I'm looking at long-haul gigabit ethernet as a possible > solution versus > > > traditional SONET and I'm a little bit wary as promises made > on web pages > > > and white papers aren't *always* completely accurate. I'd > > > appreciate it if > > > you all would share your experiences with it. By long-haul I > mean in the > > > hundreds or thousands of miles. I need to know: > > > > > > a. Does it work properly? > > > > > > b. Who offers it in the continental US? > > > > > > Please contact me off-list. Any information is greatly appreciated. > > > > > > Thanks in advance, > > > > > > Greg Pendergrass > > > > > > > > > > > > >
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