How to set a (IP) reservation for a MAC-address within DHCP

[Hinti]

Hello together,

as the title says:
How to set a (IP) reservation for a MAC-address within DHCP?

I'm using a TS-253 Pro QNAP
(newest Firmware-Version 4.2.4 Build 20170313)

[AlastairStevenson]

I don't think this is a NAS question - assuming it's a router/gateway/DHCP server question.
You need to first of all find the MAC address for the NAS (Control panel | System Status | Network Status)
Then log in to the web GUI of your router/DHCP server, and use the DHCP configuration menus to create the IP reservation.

[dolbyman]

unless op is talking about the builtin dhcp server of the qnap

[MinLever]

Reviving this question.

I want to use the QNAP's DHCP server, but do not want it to fling IP around. Some machines are needed to have a specific IP, but can not have a static IP as they sometimes are connected to other networks.

I find no (GUI) way of doing this. Is there a settings file somewhere that can be modified?


TIA,
ML.

[Prometeion]

The sequence is not fully intuitive:
First set-up the DHCP server with the basic settings, and activate
Then under "Actions" select "Check the client table" (magnifying glass)
In the popup select "Add Reserved IP"

[riker1@gmx.net]

Hi

could you please post a screenshot where you find the client table?

Which actions do you refer to ?

I do not find it ...sorry

Thanks T

[OneCD]

I've just tried this via remote access to vQTS 4.4.1.1086 running on QNAP's demo site.

There appears to be a UI bug. After creating a new DHCP server, the magnifying glass icon in the 'Actions' column is not enabled:



I had to close the 'Network & Virtual Switch' app, then load it again. The magnifying glass icon then worked as expected. A client table was displayed, and a button was shown titled "Add Reserved IP" which permitted me to add device information to reserve IP addresses.

edit: I've also created a support ticket with QNAP for this bug.

[OneCD]

edit: I've also created a support ticket with QNAP for this bug.

Following-up with the outcome of this ticket.

After some back-and-forth with QNAP tech support, it looks like the magnifying glass icon does work - if you give it a few seconds to 'activate'. If you click it while it's in an inactive state (immediately after creating a new DHCP server), nothing happens. Wait about 10-20 seconds, then click it - it works fine.

Note: there is no visual difference between 'inactive' and 'active'.

As I was only able to demonstrate this to QNAP via one of their vQTS sessions, they attribute the slow response to it being a VM. Which gave me a chance to complain about the slowness of the demo site sessions.

I've advised them it seems to be happening on "real" QTS sessions too, so they have asked that anyone experiencing this problem should create a support ticket.

Until then, they won't be making any changes to fix this display bug.

[spammenot66]

is there a way to manually set this in a file by ssh into the server and modifying some sort of file? The gui seems to have rules around ip range that you're able to reserve, but and its pretty difficult to use.