I have a workaround in place. I don't help solving this problem. I was
more curious whether it's typical/possible/expected to have unreported
errors on an SFP port.
In this case, one side is a CCR1009, the other is a Signamax industrial
switch. They both certainly have error counters on these interfaces
(CRC's etc), but they're all zeroes.
On 5/6/2020 3:21 PM, Josh Luthman wrote:
Light levels? What kind of switch, is it counting anything besides
packet count/size/frame size?
Link up/down?
Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373
On Wed, May 6, 2020 at 2:22 PM Adam Moffett <[email protected]
<mailto:[email protected]>> wrote:
Each event is 8-10 spurts of packet loss precisely 2 seconds
apart. From one of these events to the next it can be anywhere
from a few minutes to over an hour.
I've changed the SFP on one end, but the other end is 100m up a
tower. I'll certainly get this fixed one way or another, but I'm
stunned that neither switch reports any problem.
On 5/6/2020 2:04 PM, Josh Luthman wrote:
Anything is possible. Anything.
Are your light levels OK? Can you just swap the SFP and see if
that changes it? How often are the errors?
Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373
On Wed, May 6, 2020 at 11:47 AM Adam Moffett <[email protected]
<mailto:[email protected]>> wrote:
I'm trying to track down little spurts of packet loss on a
100 meter MM
fiber connection. I know the loss doesn't occur before this
point but
does occur after it, so I know where it's happening but neither
interface reports any errors. It's just frustrating because
I don't
understand one of these Ethernet devices is dropping packets
without
reporting any sort of error at all.
Is it possible a switch passes a frame to an SFP and the SFP
has some
internal error causing a dropped frame, but that the switch
is now
oblivious to the error because it happened in the electronics
of the
SFP? These are 8+ years old Maxxwave SFP's.
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