Re: DHCP - Difference between IPV4 Fixed Address and IPV4 Reservation Address
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09-21-2017 10:10 AM - edited 09-21-2017 10:11 AM
Hello Mayur,
Greetings to you too!
Unlike a Microsoft Reservation, Reservation in Infoblox means an IP or Range (scope) which is reserved for future use. When you save an IP address as a reservation in Infoblox DHCP, its MAC address is autocreated as 00:00:00:00:00:00 so that it may not be offered to any clients.
A Fixed address in Infoblox however does similar job as a reservation on Microsoft. You can create a fixed address by tying it to a specific clients MAC address, DHCP Client Identifier (option 61) or relay agent info such as Circuit ID or Remote ID.
In short:
Fixed address: An address dedicated for a specific client
Reservation: An IP/range reserved for future use
Additionally, Fixed address lease info is not captured by default. So you would want to navigate to "Grid DHCP Properties-->General tab-->Advanced section-->Enable "Capture hostname and lease time when assigning fixed addresses". Do not forget to restart DHCP service as prompted for the changes to take effect.
Best Regards,
Bibin Thomas