Can I create a distributed ethernet using just 1 x core of a single mode fiber ring ?
Update (Sep 2022):
The following is what we've implemented and works great. It's one of the options discussed in extended chat with @zac67
Essentially there were two requirements for what I needed to do:
- A Bi-Directional technology such as 1000BASE-X allowing the use of the single core.
- A Switch that has 2 x SFP slots to allow daisy chaining.
Original Post (Dec 2021)
This is an existing installation, I can't change the following constants:
- I have approx 100 locations (nodes) in a ring.
- Each node is between 100m and 5km apart.
- The total ring is around 25km.
- Each node has 2 x single mode fibre cores, each terminated to an SC connector. One comes from the previous node, and one goes out to the next node. (The point I'm trying to make here is that from node to node is a single core, not duplex)
- I want an ethernet outlet at each node so I can connect to all the nodes from a central control room.
- I don't have any need for Layer 3 features
I've been researching this on and off for the last 6 months, I've spoken to fibre techs I meet on site, and tried consulting with every supplier of media converters for a solution, all of them claim it's either impossible or that they don't know how to do it.
Eventually I just decided to start buying gear and trying it in a lab.
This is my small scale setup, which I quickly discovered doesn't work as I'd like.
I've been exploring WDM converters, but that I assume would require 2x at each location with an ethernet bridge ?
I'd appreciate some advice on this.