Realsense D555 PoE Connectivity Issues
I am representing an international automation company that utilizes IoT and Camera-based hardware from vendors all over the world for AI-driven insights.
We recently procured 8 RealSense D555 PoE cameras from the US store for some of our modules. For the setup to work, we had already acquired a Windows PC, a Linux PC, a 5-Port Gigabit PoE Switch (TP-Link TL-SG1005P), and a TP-Link Archer AX1800 Wi-Fi router.
Using the User setup guide (https://realsenseai.com/wp-content/uploads/2025/12/D555_PoESetupGuide-Rev001.pdf) as reference, we followed every instruction for setting up the D555 camera.
We configured the Wi-Fi router to an IP address of 192.168.11.249, the host machine's IP address to 192.168.11.70 (as referenced in the user guide), downloaded the SDK file, even built the SDK from source using CMAKE with the required flags, disabled the firewall completely, and ran all the commands (as referenced in the user guide).
When we ran the sanity check, the default IP address of the depth camera 192.168.11.55 responded, but its stream could not be accessed by any means. We even tried capturing the stream with pyrealsense2 library with python with no luck. At this point, we are all out of options.
Can the support team kindly respond with a solution for this issue?
It will be much appreciated.
We had considered purchasing more D555 PoE units for our additional modules, but given the setup constraints, we are inclined to reconsider this option.
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Hi Raafe Asad Configuration guidance for Linux and Windows is provided at the links below.
LINUX
https://github.com/realsenseai/librealsense/issues/14284#issuecomment-3349204762
WINDOWS
https://github.com/realsenseai/librealsense/issues/14293#issuecomment-3304919513
Looking through your configuration details above, some other key details to bear in mind are:
- When using Linux, set the MTU value to 9000. On Windows, it should be set to 9014
- The switch that you are using must support Jumbo Frames so that an MTU higher than the common switch default value of 1500 can be set.
- The subnet mask should be set to 255.255.255.0
- The ethernet cabling needs to be CAT6 or higher, not the older CAT5.
- The camera's ethernet cable should be plugged into the Out port on the switch. The cable between the computer and switch should be plugged into the In port.
- If you have a USB cable attached to the camera, make sure it is disconnected before using the camera in PoE mode or PoE will not work.
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