The Challenge of Changing Camera IP Addresses

By default, home routers assign temporary IP addresses to connected devices via DHCP (Dynamic Host Configuration Protocol). This means every time your router reboots or a security camera briefly loses power, its local IP address (e.g., 192.168.1.45) might change to a new one (e.g., 192.168.1.189).

When this happens, your RTSP connections in local NVR software or OpticLink will instantly break. To build a solid, bulletproof surveillance station, you must perform two simple steps: Discover your cameras on the local network and Lock their IP addresses in place.

Step 1: Discovering IP Cameras on Your Network

Finding camera IP addresses is simple when using the correct utilities. Try these primary methods:

  • OpticLink ONVIF Scan: Open the OpticLink desktop client, navigate to the Add Camera wizard, and select "Scan Local Network". OpticLink will broadcast a standard ONVIF WS-Discovery probe, instantly listing every ONVIF-compatible camera (such as VIGI, Reolink, Dahua, or Hikvision) along with their IP addresses.
  • IP Scanner Tools: If your camera has ONVIF disabled by default (such as TP-Link Tapo), download a lightweight local IP scanner (e.g., Advanced IP Scanner) and filter the scan by manufacturer keywords to quickly locate their IP addresses.

Step 2: Securing Static IPs (DHCP Reservation)

Never configure a static IP manually inside the camera's internal firmware menu if you can avoid it—this can lead to IP conflicts if your router re-assigns that same address. The professional standard is configuring a DHCP Reservation on your router:

  1. Log into your home router's admin panel (typically 192.168.1.1 or 192.168.0.1).
  2. Navigate to DHCP Server, Static Leases, or DHCP Reservation settings.
  3. Locate your camera's unique MAC address (found on the camera sticker or in the discovery tool) and its current IP.
  4. Click Add/Reserve to bind that MAC address permanently to that IP. Save and apply.

Technical Specification Comparison

Why DHCP Static Reservation is superior to manual camera-side IP assignments:

Operational Metric Camera-Side Static IP Router-Side DHCP Reservation The Advantage
IP Conflict Risk High (Router may double-assign address) Zero (Router manages and locks IP pool) Completely prevents network drops
Device Re-location Requires firmware reset if network changes Adapts automatically to new routers Easier network migrations
Central Management Decentralized (Must log into each camera) Centralized (One router settings page) Streamlined hardware maintenance