DHCP Lease Time

[paradeedle]

Is it possible to change the DHCP Lease duration on Voxels 1.0.2.63SF firmware? I have been tracking down an issue with why my Nest Outdoor Cam drops around the same time every day and I’m wondering if it’s when the DHCP lease renews.

 

[kamoj]

I suggest you give the camera a reserved address to avoid DHCP lease problems.
In the Netgear Genie WEBGUI: Advanced: -> Setup: -> LAN Setup -> Address Reservation

# You can even set fixed ARP address for IP Camera, e.g.:
ip neigh replace 192.168.1.123 dev br0 lladdr 11:22:33:aa:bb:cc nud permanent

PS
The lease time is 3 hours (10800 seconds) :

root@R7800:/$ nvram show | grep lease
lan_lease=86400
wan_lease=86400
dhcpc_lease_time=10800
dhcpc_lease_obtain=103865

 

[paradeedle]

Right, but a DHCP Reservation is not the same as a static IP. The Nest camera is not capable of setting a static IP so the camera will still try to renew its lease and so I think I will still see a drop. I will test to see if that fixes the issue though.

 

[paradeedle]

So after a bunch of testing, it wasn't a DHCP issue after-all. My issue is apparently with 5GHz on the R7800. I disabled Smart Connect and started using 2 separate SSIDs for 2.5GHz and 5.0GHz. I still continued having the issue where the camera would drop once or twice daily when connected to 5GHz but is perfectly fine on 2.4GHz.

I have no idea what is causing the camera to only drop one or two times a day on 5GHz since it usually in the middle of the night when I would figure there would be less interference but it is working fine on 2.4GHz, so I am just going to leave it there.

 

[kamoj]

Actually I have noted the same thing for 2.4 GHz, the devices logs a "DHCP IP" issue about every 12 hours, with a small jitter of up to 20 minutes.

Only one of my devices (A web-camera) complains about this, but it's visible in the system log-file:
https://www.snbforums.com/threads/netgear-r7800-x4s-firmware-1-0-2-60.49434/page-2#post-442061

(The same issue with Netgear Stock FW)

PS
To supervise e.g. 192.168.1.106, you can add the following command to /etc/rc.local:

(sleep 60; tail -f -n1000 /tmp/log/messages | awk /"192.168.1.106"/ >>/DHCP106.txt) &

and then look at the file with e.g.:

cat /DHCP106.txt

So after a bunch of testing, it wasn't a DHCP issue after-all. My issue is apparently with 5GHz on the R7800. I disabled Smart Connect and started using 2 separate SSIDs for 2.5GHz and 5.0GHz. I still continued having the issue where the camera would drop once or twice daily when connected to 5GHz but is perfectly fine on 2.4GHz.

I have no idea what is causing the camera to only drop one or two times a day on 5GHz since it usually in the middle of the night when I would figure there would be less interference but it is working fine on 2.4GHz, so I am just going to leave it there.