Am I missing something or the optical monitoring only works when the link is up? I am trying to troubleshoot some fiber connections which were unreliable / not coming up and when I use the `show optical-monitor x/y/z` command, I get nothing. Just comes back to the prompt.
If the same port with the same optical module has link, then I do get a proper readout of the optical monitor command (tx power / rx power / temps / current).
Being able to monitor a non-working link is a pretty basic thing to do to be honest and having access to DDM/DOM/optical monitoring of down links lets you figure out if you have, for example, a broken fiber in one direction, a mis-plugged rx/tx pair, etc.
Is there any way to monitor the DDM/optical parameters while the link is down?
Thanks in advance!