Hi there. Have a single ethernet line going to an outbuilding where I have an R720. As this is the closest I have to "offsite" this is where I want to put my critical data backup NAS. However, when plugged into the spare ethernet port in the R720, the NAS is not discoverable on my network. The PoE switch powering the R720 has plenty of power budget so this isn't the issue.
Just wondering if I need to change a setting that I am unaware of in my ZD1200 to enable a wired client on my R720.
Can you confirm that your R720 is being powered with 802.3at PoE power (upto 30w)?
If your switch is only sending 802.3af (15w) power, then the R720's second ethernet port will be disabled.
It should be easy to diagnose on the AP itself as the port LEDs won't be lit once you've connected your NAS.
If you have checked the above and your AP is getting enough power, then it might be a MDI/MDIX issue. I experienced this recently with an iMac plugging directly into an AP's second port. It may be possible to configure this on your NAS or you may need to use a crossover Ethernet cable.
Great to hear you have the ICX7150 too. However just because your switch has plenty of power budget (124W) - it doesn't guarantee the port is automatically providing the correct PoE power. This will depend on the firmware version and whether you're running LLDP, etc.
The ICX switch will provide 30 watts 802.3at power with no issue for upto 100 metres on CAT5e.
You should be able to connect as you want but it looks like you might need a tweak to the config on the switch or your NAS.