The inverse of that is that an actual wavelength for 10/100G services can be contractually defined to a certain specific path at OSI layer 1 (with GIS vector shape files from the underlying carrier provided prior to signing a contract). Whereas a layer 2 transport service could also turn out to be unprotected, if it's a particularly low cost service.
Or it could be protected. And you might not have the ability to define its path between city A and city B to intentionally avoid being non-diverse from another route. The L2 lit service carrier could re-route it around the region however they want during the term of your service, if the contract isn't written to avoid that. In my experience actual wavelengths such as a carrier might use to transport an STM64 between two places on far sides of a state, even non-protected, will be considerably more expensive than buying lit L2 service. For small ISPs where their entire presence at an IX will fit in one or two 10Gbps circuits, and a 100Gbps circuit from $smalltown to $bigcity_ix_point would be cost prohibitive, it's often the best option. On Wed, Oct 14, 2020 at 1:08 PM Darin Steffl <darin.ste...@mnwifi.com> wrote: > The downside to waves are that they're typically not protected. So a cut > will take you down. If you have 10G Layer 2 ethernet, they often will have > redundant paths so the only single path that can fail is between you and > their first POP where they hopefully have redundancy. It can make a big > difference when you're transporting data hundreds or thousands of miles. > The longer the path, the less reliable the wave will be as each route mile > opens you up to more risk. > > On Wed, Oct 14, 2020 at 2:25 PM Mike Hammett <na...@ics-il.net> wrote: > >> I suppose it depends on your carrier and their capabilities. >> >> I much prefer waves to any kind of service that you can aggregate. Being >> able to aggregate just means they're going to oversubscribe you and at some >> point, you'll not get what you're paying for. Can't do that on a wave. >> >> >> >> ----- >> Mike Hammett >> Intelligent Computing Solutions <http://www.ics-il.com/> >> <https://www.facebook.com/ICSIL> >> <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> >> <https://www.linkedin.com/company/intelligent-computing-solutions> >> <https://twitter.com/ICSIL> >> Midwest Internet Exchange <http://www.midwest-ix.com/> >> <https://www.facebook.com/mdwestix> >> <https://www.linkedin.com/company/midwest-internet-exchange> >> <https://twitter.com/mdwestix> >> The Brothers WISP <http://www.thebrotherswisp.com/> >> <https://www.facebook.com/thebrotherswisp> >> <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> >> ------------------------------ >> *From: *"Eric Kuhnke" <eric.kuh...@gmail.com> >> *To: *"Forrest Christian (List Account)" <li...@packetflux.com> >> *Cc: *"nanog list" <nanog@nanog.org> >> *Sent: *Wednesday, October 14, 2020 2:25:46 AM >> *Subject: *Re: Hurricane Electric AS6939 >> >> For small ISPs looking at setting up their first ever presence at an IX >> point, you almost certainly would not be ordering an actual 'wave' (eg: a >> specific DWDM channel on a legacy 10G DWDM platform, handed off to you with >> 1310/LX interfaces at both ends), but lit layer 2 transport service between >> the carrier hotel and your service location. >> >> Pricing for the two types of service can be quite different when you >> request an actual 'wave' from a carrier sales person, vs just lit L2 >> transport capable of large MTUs, QinQ, etc. >> >> The ISP carrying it might take it between those two places as simply a >> vlan trunked through a larger 100G link, as a MPLS circuit, lots of >> possible things. >> >> Unless you happened to be in a happy conjunction of the right place at >> the right time, and an older DWDM system on exactly the same path you >> wanted happened to have an empty channel and ready to go interface cards at >> both ends. >> >> >> >> >> >> >> On Tue, Oct 13, 2020 at 11:12 PM Forrest Christian (List Account) < >> li...@packetflux.com> wrote: >> >>> Generally one would order a circuit (aka wave) between your location and >>> the IX fabric at the interchange if you're not at the site you're wanting >>> to peer at. >>> >>> For instance, the network I am the network engineer for has a circuit >>> which terminates into the Seattle IX (SIX) fabric. We don't have any >>> other presence in Seattle (or Washington for that matter) at this point - >>> our circuit connects directly to our port on the Exchange. We're >>> considering adding a similar link to another exchange point somewhere to >>> the east or southeast of us. I haven't looked at the graphs recently, but >>> it's not uncommon for >50% of our traffic to come from the exchange. And >>> yes, we're peered with Hurricane and others there. >>> >>> We're also looking at dropping 1U or so of equipment in so we can pick >>> up some transit as well, but that's a story for a different day about the >>> joys of providing internet in the less populated parts of the country. >>> >>> In your case, it also looks like there are also some peering options at >>> the datacenters you are currently at as well. You may want to do some >>> more research to determine how that might work in your situation. >>> PeeringDB is a good resource along with google searches for "peering 100 >>> Taylor" or "peering austin data foundry" >>> >>> >>> >>> On Tue, Oct 13, 2020 at 9:51 PM <aar...@gvtc.com> wrote: >>> >>>> Don’t you have to be there to join? >>>> >>>> >>>> >>>> I’m in Austin and San Antonio >>>> >>>> >>>> >>>> -Aaron >>>> >>>> >>>> >>>> *From:* Mike Hammett <na...@ics-il.net> >>>> *Sent:* Tuesday, October 13, 2020 7:20 PM >>>> *To:* Aaron Gould <aar...@gvtc.com> >>>> *Cc:* nanog@nanog.org >>>> *Subject:* Re: Hurricane Electric AS6939 >>>> >>>> >>>> >>>> https://bgp.he.net/AS16527 >>>> >>>> >>>> >>>> You don't appear to be on any IXes. Definitely join some IXes before >>>> buying another 100G of transit. >>>> >>>> >>>> >>>> DFW has a couple and there are some more that are starting up. >>>> >>>> >>>> >>>> >>>> >>>> ----- >>>> Mike Hammett >>>> Intelligent Computing Solutions <http://www.ics-il.com/> >>>> <https://www.facebook.com/ICSIL> >>>> <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> >>>> <https://www.linkedin.com/company/intelligent-computing-solutions> >>>> <https://twitter.com/ICSIL> >>>> Midwest Internet Exchange <http://www.midwest-ix.com/> >>>> <https://www.facebook.com/mdwestix> >>>> <https://www.linkedin.com/company/midwest-internet-exchange> >>>> <https://twitter.com/mdwestix> >>>> The Brothers WISP <http://www.thebrotherswisp.com/> >>>> <https://www.facebook.com/thebrotherswisp> >>>> <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> >>>> ------------------------------ >>>> >>>> *From: *"Aaron Gould" <aar...@gvtc.com> >>>> *To: *nanog@nanog.org >>>> *Sent: *Tuesday, October 13, 2020 6:29:55 PM >>>> *Subject: *Hurricane Electric AS6939 >>>> >>>> Do y’all like HE for Internet uplink? I’m thinking about using them >>>> for 100gig in Texas. It would be for my eyeballs ISP. We currently have >>>> Spectrum, Telia and Cogent. >>>> >>>> -Aaron >>>> >>>> >>>> >>> >>> >>> -- >>> - Forrest >>> >> >> > > -- > Darin Steffl > Minnesota WiFi > www.mnwifi.com > 507-634-WiFi > Like us on Facebook <http://www.facebook.com/minnesotawifi> >