Help Center

Manage LAN IP Addresses and DHCP Pools

Learn how to manage LAN IP addresses, change DHCP pools, and reserve static IP addresses on your gFiber router using the gFiber app or web portal.

You can manage your local IP base, subnet mask, and DHCP address pool in the gFiber app under Network > Network settings > Advanced network settings > Addresses, or via the gFiber web portal under Network > Edit Network Settings > Advanced Network Settings > Addresses.

LAN IPs, Subnet Masks, and DHCP Pools overview

Understanding how your gFiber router manages local traffic helps you optimize your home network layout:
  • Router WAN IP address: Your router's external public IPv4/IPv6 address assigned by gFiber to communicate with the internet. This address is read-only and cannot be manually modified.
  • Router LAN IP address: Your router's private internal address (typically 192.168.1.1). It serves as the default gateway for all connected hardware.
  • Subnet Mask: Defines the size allocation of your local network and controls which internal IP ranges can communicate with each other.
  • DHCP Dynamic Address Range: The starting and ending IP addresses your router uses to automatically assign local addresses to connected devices.
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These advanced IP settings are available on the gFiber Wi-Fi 6 Router, Wi-Fi 6E Router, Wi-Fi 7 Router, and Multi-Gig Router. If you use Google Wifi or Nest Wifi Pro hardware, manage your advanced IP settings in the Google Home app.
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Important Notice: The Network Box router has been retired and is no longer supported on gFiber service. If you still have a Network Box, upgrade to a modern gFiber router to manage your network settings. Learn more about the router upgrade for Network Box customers.

Find and configure network IP addresses

You can update your local gateway, subnet mask, and dynamic address range using either the gFiber mobile app or web portal.

Configure IP addresses in the gFiber app

  1. In the gFiber app, tap Network on the bottom menu.
  2. Tap Network settings, select Advanced network settings, and tap Addresses.
  3. In the text fields, enter your new LAN IPv4 address base, subnet mask, or dynamic DHCP range.
  4. Tap Save.
  5. Disconnect and reconnect your devices to your Wi-Fi network.

Your devices will reconnect and pull a fresh IP address from your updated dynamic pool.

Configure IP addresses in the gFiber web portal

  1. In the gFiber Web Portal, sign in to your account.
  2. In the upper-left corner of the dashboard, click Network.
  3. In the Network section, click Edit Network Settings, click Edit next to Advanced Network Settings, and select the Addresses tab.
  4. In the configurable fields, update your internal LAN gateway IP, subnet mask, or dynamic allocation range.
  5. Click Save.
  6. Disconnect and reconnect all connected hardware from your network.

Your active device leases refresh with new IP addresses matching the updated configuration.

Display Active DHCP assignments

To track connected hardware or troubleshoot local connectivity, review your active DHCP device log.
  1. In the gFiber web portal, sign in to your account.
  2. In the top-left corner, select Network.
  3. In the settings pane, click Advanced, then select the DHCP tab.
  4. In the data table, view active hardware assignments. You can click any column header to sort the entries.
    Expiry StatusDescription
    Time remainingDisplays the active lease countdown in days, hours, minutes, and seconds.
    ReservedIndicates the IP address is permanently locked to a specific device.
    ExpiredIndicates the lease cycle ended and the assignment is inactive.
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Tip: Click directly on any device name within the DHCP log to display advanced diagnostic details for that client.

Reserve a static local IP address

Reserving an IP address prevents your router from handing out that specific address to other devices. The address remains assigned to your designated client even when the hardware is powered off.
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Static local reservations only apply within your internal gFiber network and do not change the physical firmware settings of the device itself.

Reserve a local IP address

  1. Power on your device and connect it to your gFiber network.
  2. In the gFiber Web Portal, navigate to the Network section, click Devices, and select your target device to view its options screen.
  3. In the advanced settings section, toggle Reserved IP to On.
  4. In the IP Address field, enter the local IP address you want to assign to this device.
  5. Click Save.

The device entry on the DHCP tab will display its Expiry status as Reserved.

Cancel an IP address reservation

  1. In the gFiber Web Portal, navigate to the Network section, click Devices, and select your target device to view its options screen.
  2. Toggle Reserved IP to Off.
  3. Click Save.
The address will return to the general dynamic pool. On the DHCP tab, the Expiry status will change from Reserved back to an active countdown timer.