nanog mailing list archives
Re: Hi-Rise Building Fiber Suggestions
From: Joel Jaeggli <joelja () bogus com>
Date: Tue, 25 Feb 2020 20:45:47 -0800
Sent from my iPhone
On Feb 25, 2020, at 18:34, Norman Jester <nj () 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.
In my experience with retrofitting existing structures, if you have access to the riser at each floor as it sounds like you do, you would typically drop in a new duct, blow micro duct through it with a branch for each floor, have an MDF or two In a utility spaces and them you have the ability to reconfigure the fiber as necessary to meet your present and future needs. You didn’t specify if the existing fiber is single or multi-mode however it is unlikely that the was enough slack built into two fiber runs to make 30 additional splices so that approach seems dubious as a premise. As you correctly surmise daisy chaining 30 switches is not an advisable network design practice.
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
Current thread:
- Hi-Rise Building Fiber Suggestions Norman Jester (Feb 25)
- Re: Hi-Rise Building Fiber Suggestions Bradley Burch (Feb 25)
- Re: Hi-Rise Building Fiber Suggestions Tim Požár (Feb 25)
- Re: Hi-Rise Building Fiber Suggestions Ryan Hamel (Feb 25)
- Re: Hi-Rise Building Fiber Suggestions Mike Hammett (Feb 26)
- Re: [EXT] Re: Hi-Rise Building Fiber Suggestions Chuck Anderson (Feb 26)
- Re: Hi-Rise Building Fiber Suggestions Kaiser, Erich (Feb 26)
- Re: Hi-Rise Building Fiber Suggestions Bradley Burch (Feb 25)
- Re: Hi-Rise Building Fiber Suggestions Ryan Hamel (Feb 25)
- Re: Hi-Rise Building Fiber Suggestions Joel Jaeggli (Feb 25)
- RE: Hi-Rise Building Fiber Suggestions adamv0025 (Feb 26)
- RE: Hi-Rise Building Fiber Suggestions adamv0025 (Feb 26)
- Re: Hi-Rise Building Fiber Suggestions Mike Hammett (Feb 26)
- Re: Hi-Rise Building Fiber Suggestions Baldur Norddahl (Feb 26)
- Re: Hi-Rise Building Fiber Suggestions Mark Tinka (Feb 26)
- Re: Hi-Rise Building Fiber Suggestions Randy Bush (Feb 26)
- Re: Hi-Rise Building Fiber Suggestions Coy Hile (Feb 26)
- Re: Hi-Rise Building Fiber Suggestions Warren Kumari (Feb 26)
- Re: Hi-Rise Building Fiber Suggestions Filip Hruska (Feb 26)
- Re: Hi-Rise Building Fiber Suggestions Brandon Martin (Feb 26)