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DHCP with static IP addresses management solution

leblanc
leblanc asked
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I have DHCP implemented in my network but my partners and I also statically assign IP addresses (within the DHCP scope) to our devices for testing purposes. As we don't keep track of our statically assigned IP addresses, we ran into IP addresses conflict all the time. We are looking for a solution that can automate this process for us.  Is there a solution out there that can track statically assigned IP addresses within the DHCP scope? I was looking at Solarwinds IPAM. But I am not familiar with it. Can IPAM Windows server accomplish this? Thanks
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Top Expert 2014

Commented:
Instead of setting up the hosts with static IP addresses why not let them use DHCP and then use DHCP reservations to "statically" assign based on MAC address.


"IPAM" is a generic term, is there a specific product you were looking at using?
leblancAccounting

Author

Commented:
I can do exclude from DHCP scope. For ex., I can exclude 1-50 from the 51-254 DHCP scope. But then there are 5 of us, so I have to manually assign 1-10 for Mr A, 11-20 for Mr B, and so on. I'd like to get a software where I can see the conflict when somebody statically assigned the same IP address. As I mention, I saw Solarwinds IPAM and Windows Server with IPAM feature. But I am not sure if they can automate the process.
Top Expert 2014
Commented:
I know with Solarwinds you can have it "discover" IP addresses that are in use.  It uses ping, so the hosts have to be configured to allow ping.

What are you using as your DHCP server?
leblancAccounting

Author

Commented:
Windows Server 2012
Top Expert 2005
Commented:
Spreadsheets are your friends!

We have a spreadsheet with the entire scope of addresses listed.  We excluded the upper range of the subnet and use the spreadsheet to enter in details of the static assignments.  Store the spreadsheet in your admin share and flog anyone that fails to use it.

You can use a "ping sweep" tool to determine what is already assigned and populate the sheet with that information.

Short of buying an IP management tool, this works well when you and your coworkers use it.
leblancAccounting

Author

Commented:
I have at least 3000 IP addresses on my network. I am not sure if the spreadsheet can help me out there. It also unfortunate but most of my subnets are /16. So ping sweep can be very painful. Thx
Top Expert 2005
Commented:
Surely the number of static entries is not excessive.  That's really all you need the speadsheet for, only the static range because the rest is in DHCP.
leblancAccounting

Author

Commented:
Oh... I see what you are saying. The spreadsheet is for the static IP addresses.
Top Expert 2005

Commented:
Yes.  It's old school, but if used properly by all admins then it's effective.
Top Expert 2014

Commented:
Two key words in Netman66's last post "properly" and "all".

We have use excel for a couple of decades and the only time we have a problem is when somebody does NOT use it because "they can remember."