No, it's not a fibre cable toast.
No, it's not a fibre cable toast.
using undersized conduit isn’t about cost alone—it’s about performance and reliability. the cables you mentioned work fine at lower speeds, but they limit your future upgrades. fiber costs a lot more than regular cables, and replacing it now avoids bigger problems later. it’s better to invest in quality for long-term efficiency.
If replacing 3.5m of fiber and labor turns out costly and your process relies on this connection, you might try a patch and see if it keeps working. However, I’m confident the manufacturer can’t guarantee performance under the current cable condition. What you have now could last five years instead of ten, depending on usage. Fiber transmits data using light, and even small imperfections in the housing can alter its path. Although the status shows 10Gbps, actual performance won’t be clear until you experience data errors at that speed. If the Discord team had warned you but you ignored them, then the risk falls entirely on you.
The pipe is 3.5 meters and cannot be swapped. The cable is 30 meters and needs to be fully pulled from the top. This house was constructed in the 1960s, and the most recent upgrade to a larger conduit happened 20 years ago.
I’m going to challenge a lot of the opinions in this discussion. The fiber might actually be fine. The best way to confirm would be to connect your transceivers and check if a connection forms. As you noted, it functions properly. Contemporary fiber is remarkably resistant to bends, twists, and various forms of stress. What you should focus on preventing is a kink in the fiber during regular use, which is tough to achieve with modern OM3/OM4. You don’t want to compare fiber to Ethernet in this context. With fiber, performance is either fully achieved or not at all. Performance issues only arise if the cable is severely bent, causing enough signal loss that the transceivers can’t recover. I’ve seen cables damaged in a similar manner to OP, yet they continue working well today. Recently, I pulled an SMF through a busy 1-inch conduit and it bent in half, but the fiber itself remained untouched.
It functioned properly for roughly a week until an unrelated task forced us to act, causing damage. We swapped it out and it now operates smoothly. The photo didn't show the cable being broken at first; it only failed later.