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DHCP - Difference between IPV4 Fixed Address and IPV4 Reservation Address

mayurntms
Techie
Posts: 2
8303     0

Hello All,

 

Greetings!

 

I am new to Infoblox and exploring various options in Infoblox. 

 

I've one query regarding difference between IPV4 Fixed Address and IPV4 Reservation Address. 

 

Observed that if Fixed IP assigned to client doesn't get listed in the "Current Leases" tab. However, Reserved IP which gets assigned to client is visible in "Current Leases" tab. 

 

Appreciate your inputs on above query. Thank you.

 

Mayur

 

Re: DHCP - Difference between IPV4 Fixed Address and IPV4 Reservation Address

[ Edited ]
Adviser
Posts: 125
8304     0

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

Re: DHCP - Difference between IPV4 Fixed Address and IPV4 Reservation Address

mayurntms
Techie
Posts: 2
8304     0

Hello Bibin, 

 

Thank you so much for your response! This is exactly what i wanted. It's of great help for me. Appreciate it. 

 

Regards

Mayur

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