While many cameras default to DHCP out of the box, that does not mean you should use it. This may seem basic for some, but those new to the industry may not know there are other options. In this note, we review:
- Dynamic addressing
- Static addressing
- Potential issues of each
- Public vs. private IP address impact
- IPVM recommendations
In summary, there are three key points to remember about addressing schemes:
- Do not use DHCP on surveillance equipment: There are few exceptions to this rule, but DHCP should generally only be used when staging cameras, not in the final installation.
- Do use static addresses: The potential headaches of dynamic addresses far outweigh the slight increase in configuration time required.
- DHCP address reservation: Provides the benefits of static addresses, but adds more configuration complexity. It should be used when IT policy dictates, and systems may not deviate. Reservations are also useful for the edge case devices that only support DHCP.
We review each of these items below, in more detail.