I would use single fiber CWDM muxing and OADM, then you can get it down to 7-8 switches per fiber. CWDM single fiber has a max of 9 channels and the optics are typically less expensive.
Erich Kaiser The Fusion Network er...@gotfusion.net On Wed, Feb 26, 2020 at 7:43 AM Mike Hammett <na...@ics-il.net> wrote: > DWDM can be done fairly cheap. Some combination of MUXes and OADM modules > along the way. One possible solution is: > > First floor: https://www.fs.com/products/35887.html > Every floor between: https://www.fs.com/products/70427.html > Top floor: https://www.fs.com/products/35887.html > > Every floor gets 10G to aggregation switches on the top floor and bottom > floor. The aggregation switches directly connect via the second pair. > > > > ----- > 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: *"Ryan Hamel" <r...@rkhtech.org> > *To: *"Bradley Burch" <brad...@wifastnetworks.com> > *Cc: *nanog@nanog.org > *Sent: *Tuesday, February 25, 2020 10:45:05 PM > *Subject: *Re: Hi-Rise Building Fiber Suggestions > > How would that work to solve Norman's problem? That sounds like a lot of > money spending, and setup time, for nothing. > > Ryan > > On Feb 25 2020, at 8:21 pm, Bradley Burch <brad...@wifastnetworks.com> > wrote: > > > Should consider DWDM or GPON and in those look at passive optical > technologies that can benefit the project. > > On Feb 25, 2020, at 9:33 PM, Norman Jester <n...@jester.mx> wrote: > > I’m in the process of choosing hardware > for a 30 story building. If anyone has experience with this I’d appreciate > any tips. > > There are two fiber pairs running up the building riser. I need to put a > POE switch on each floor using this fiber. > > The idea is to cut the fiber at each floor and insert a switch and daisy > chain the switches together using one pair, and using the other pair as the > failover side of the ring going back to the source so if one device fails > it doesn’t take the whole string down. > > The problem here is how many switches can be strung together and I would > not try more than 3 to 5. This is not something I typically do (stacking > switches). I have fears of STP and/or RSTP issue stacking past Ethernet > switch to switch limits (if they still exist??) > > Is there a device with a similar protocol as the old 3com (now HP IDF) > stacking capability via fiber? > > I’d like to use something inexpensive as its to power ubiquiti wifi on > each floor. Ideally if you know something I don’t about ubiquiti switches > that can do this I’d appreciate knowing. > > Norman > > >