[FS#883] ER-X-SFP link-state enabled on SFP port eth5 (led = lit) but swconfig reports link:down

[LEDE Bugs]

The following task has a new comment added:

FS#883 - ER-X-SFP link-state enabled on SFP port eth5 (led = lit) but swconfig reports link:down
User who did this - Routing Route (rrt)

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Maybe check if this is also due to a failing vlan configuration FS#1341
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=883#comment4294