[c-nsp] Weird Transceiver failure after upgraded to 6509-E chassis

[Nick Hilliard]

On 15/12/2013 15:24, Matthew Huff wrote:
> Has anyone run into this ever before with no error message or any
> indication of the problem? They interfaces show the optics, the ER DOM
> shows low receive levels (varies between -28 and -37), but just won't
> come up.

Sounds like a layer 1 problem to me.  Best thing to do here would be to run
a light test using calibrated light source at one end and meter at the
other.  Obviously, you'll need to make sure that the actual patch cables in
use are tested inline.  This will categorically rule out any L1 issues.

Nick