Home Hub 4000 Internet DHCP lease time or reserved IP address?

[paradoxpenguin]

I have Bell Fibe 1GB service with a Home Hub 4000 modem. I work from home and access servers that have an IP whitelist for external access. Every time my WAN side DHCP lease renews I get a new IP address and get blocked out of work until I am re-whitelisted. Is there a way to extend the modem's external DHCP lease time or better yet have it assign a reserved IP address? I can live with the issue if I have to re-whitelist every few months rather than every few days.

[ZaneP]

@Wolfy what is the error message you get, when you select the option to reserve the IP address? I have the HH4000 and have no problem reserving the IP address for an already-connected device.

[Bol]

How can we reserving IP adress for already-connected device? For exemple, a PS5?

[ZaneP]

Hi @Bol 

To reserve a device that's already connected to your LAN:

1. Log into your Bell modem (Giga; HomeHub)
2. Click on My Devices
3. Click on Advanced ( this will show you the IP address of all the devices)
4. Choose a device (like your PS5), and click on Settings
5. Change its IP Type from Dynamic to Reserved

The device now has a static IP address.

[Wolfy]

I got a pop up with this message : The settings were not saved. Please try again.
But un the background, I have this message : Reserved IP Address is already in use
I tried to use an other ip address which is not already reserved, but same message.

[Wolfy]

Hi @ZaneP 
I did exactly this, and it doesn't work, error message  Reserved IP Address is already in use

[ZaneP]

Hi @Wolfy 

Yes, you will get that message for a device for which you have already reserved an IP address. On my LAN I have already reserved an IP address for one device, so it now has a static address. 

Just so we're understanding each other: The router's DHCP server assigns a dynamic address to every device that connects to the router. All we are doing is changing the status of that assigned address from dynamic to static. We aren't assigning the device a new IP address. 

I don't know why you're getting that pop-up message.

[Wolfy]

Yes, that's what I'm trying to do. Changing the status ot the assigned address from dynamic to static.
No intention to change the lease to 365 days. It seems I've got the last modem Firmware, so don't know what to do

[Vanadiel]

I am not near my home hub, but if I am not mistaken it "remembers" all devices that were ever connected. The ones that are not connected are greyed out, but the device and associated MAC will be listed together with an IP.

There's an option to clear the list to only show currently active clients, and that also clears up the table of previously used IP's. I forgot what it's exactly called, but it's pretty straight forward and a pop-up will come up explaining you are clearing the pool data.

It basically clears the ARP cache for all devices except those that are connected and considered active.

Try that, and then try to reserve the IP for an active device.

[ZaneP]

Yes, in My Devices you can show, hide, or "forget" connected/disconnected devices. When you choose to forget a disconnected device there's a pop-up, but it's pointing out that you'll lose its alias and icon. Nevertheless, when you continue, the device is now removed.

[iMax]

Hi, 

I am unable to set an IP address as reserved, no matter the IP address I choose the error is always "Reserved IP address is already in use"

[iMax]

I have tried this and restarted after with no luck. It's still tell Me “Reserved IP is in use“

[SyxyS]

Hello iMax,

I ran in the same problem 2 weeks ago.  The problem started when I begin to add address reservation for the virtual machine and test web site I have on my LAN.  When I tried to add the 17th reservation, I got the "reserved IP is in use" no matter what address it was.  I tried to erase some reservation but it also fail.  To only thing that worked, was a reset using the reset button on the side of the device.  You hold it as long as it does not reboot.  This is going to reset somes settings but not all.  Among the settings not reset, is your wifi setting and password.  What was reset is the connection to the fiber WAN.  You will need your client ID (something like b1...) and the password the Bell technician use to connect you.  It might have not given it to you, so you need to call tech support.  After the reset I experienced some wifi LAN connexion problems which were solved by another call to tech support who adjusted some parameters and voilà no more Reserved IP issue.  Now I need a way to replace the DHCP server from the Gigahub 4000 with an external one and still be able to keep the invitee segment and home segment.  I have not solve this problem yet.  Maybe Bell will issue an update to fix their DHCP server but I do not hold my breath.  Hope it help someone.    

[Vanadiel]

The reserved IP is more than likely because the MAC address associated with that device is connected to one of the LAN ports.

If you disconnect the LAN side it should stop the reservation. I am thinking this is likely a bug in the DHCP reservation list. Could also possible be a bug failing it to clear the ARP cache.