topic Re: DHCP reservation issues in Broadband

DHCP reservation issues

mikegostev — Sat, 28 May 2022 16:25:52 GMT

I have issues with DHCP reservation. Whenever I add the new reservation the router rejects it because some my existing reservations "already in use". It looks like a UI/FW bug. Any ideas?

Re: DHCP reservation issues

Anonymous — Mon, 30 May 2022 07:33:59 GMT

Hello,

Which router are you using? (make and model)

Thanks

Re: DHCP reservation issues

mikegostev — Mon, 30 May 2022 17:05:20 GMT

Hi.

It is Sagemcom FAST 5364-3.T8

Regards

Re: DHCP reservation issues

Debbie-TalkTalk — Tue, 31 May 2022 06:10:16 GMT

Hi mikegostev

Thank you.

@KeithFrench is this an issue you have reported?

Re: DHCP reservation issues

KeithFrench — Tue, 31 May 2022 09:48:12 GMT

Hi @mikegostev @Debbie-TalkTalk

What firmware is your Sagemcom running, you have only quoted the hardware revision?

To reuse a previously reserved IP address, the device that used that address previously must not have tried to connect to the router for more than 24 hours (default DHCP Lease time is 1 day). Once this timer has expired, the IP address should be available again. If you do not want to wait that long, reboot the router.

Re: DHCP reservation issues

mikegostev — Tue, 31 May 2022 21:06:18 GMT

Serial NumberHardware VersionSoftware VersionGUI Version

N7191784N002270

FAST5364 3.00

SG4K100136

5.6.1

I don't reuse IP. I add the new reservation, but the UI shows a error on one of the previously existing reservations. It says "IP already in use". Of course it is but I don't change it I just add something new.

Re: DHCP reservation issues

KeithFrench — Tue, 31 May 2022 21:11:12 GMT

What happens if you reserve the IP address the device already has, via the device listed in the initial Advanced mode section? I can't say I have noticed any problems, but a screenshot of what you are trying to do would make it easier for me to see if I can replicate your problem.