interface TeGig, xfp remains upward with low DBm Rx

Hi, does anyone know why the interface remains upwards, when receives a lower than expected power. If we can avoid this? How?

SPA-1X10GE-L-V2 with XFP-10GLR-OC192SR

The sensitivity of the receiver (maximum) is SR-1 10GLR:-12.6 dBm

We receive-20 but the interface remains upward.

I think that its normal, repeatedly observed in the laboratory during re-ceates, photodiode stop detection beyond its penetrating recevier but light is sufficient to show the port and no problems with frames/traffic.

but we can observe errors after a while.

example:

many NSO-XFPs penetrating release (tunable full) is of approximately - 26dBm, but they remain upward with low optical power close to-29,-30, sometimes 40 - illustrates power (doesn't mean no optical power) by the system.

so its normal.

Tags: Cisco Network

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