Okay so back in the stone age days we use to loopback a oc3/ds3/t1 interface to itself and run ping tests to the ip address on the interface. We would keep moving the loop closer to us until the problem stopped(no more dropped packets). This would point us to where the problem is. So fast forward to now (the age of gigabit ethernet). How do i run this same test. it seems like it works when it's physical loopbacked (same light going in and out).
But when i have the carrier loopback the remote end i don't see the same packet input as the same packet output. i've been researching this all weekend, and it looks like ethernet oam/cfm is the way i should go about this. Thats fine if it's the only way but just trying to make sure i can't do a simple ping test with the equipment already in place.
TLDR: can i loop back a fiber gigabit ethernet circuit at ANY point along the path and test with consumer** equipment.
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