So for the packet loss with no obvious cause, do I blame the cheap
optics or the cheap switch? Sounds like we're thinking switch.
The most recent issue (which prompted these questions) was 1/10th second
of packet loss every 2 seconds. It was between two CRS 2xx switches
with $10 Fiberstore SFP's. I feel like one end or the other should have
been accumulating thousands of errors, but nope. No errors; nothing to
see here. And btw Rx power was around -12 on each end vs a sensitivity
of -23. OTDR trace showed nothing weird.
On 7/2/2020 11:30 AM, Trey Scarborough wrote:
The switch/router should report the error. The SFP is just a blinky
light for the most part, until you get into 100g coherent optics. Some
things that may not report errors would be interface drops, but would
be reported as a link down. I would really like it if mikrotik would
implement a hold time/ port flap protection. Also reading more SFP
detail would be nice so it would now alarm levels for the RX signal.
On 7/1/2020 10:53 AM, Adam Moffett wrote:
n something is clearly wrong, why aren't errors reported? Is it:
1) Mikrotik interfaces never report errors to begin with?
2) My cheapo SFP's don't report an error to the host switch/router?
3) An error at the SFP is invisible to the host switch/router?
......and I'm not talking about optical problems because those are
detectable with an OTDR pretty much 100% of the time. Talking
specifically about issues with switches and SFP's.
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