How can I create a Fixed Lease (DHCP Reservation)?

Overview

A Fixed Lease (DHCP Reservation) is created to ensure a unit is always accessible with the same IP. When a vm is decommissioned, it is the unit owner's responsibility to Delete a Fixed Lease IP.  Timely cleanup of these records  helps prevent IP exhaustion and keeps EIP DNS data accurate. Always verify cleanup is complete. Incomplete cleanup of old entries may lead to DNS issues in the future.

Table of Contents

• Creating a Fixed Lease (DHCP Reservatoin)
• Deleting a Fixed Lease (DHCP Reservation) 

Creating a Fixed Lease (DHCP Reservation)

1. Navigate to eip4.cc.uic.edu and log in using your NetID and password.
   
   NOTE:  You will need to be on campus, or connect to a UIC network using VPN to access this page.
    
2. Select "IPAM."
   
   
    
3.  Select "Networks."
   
   
    
4. Select the appropriate address space.
   
   NOTE:  You can type a partial CIDR IP range in the "Address + Prefix" field to easily locate the desired address space.
   
   
    
5. Once you've selected the appropriate address space, select the "+" icon.
   
   
    
6. On the "Pool List" pop-up, select "Next."
   
   
    
7. On the IP Address Class pop-up, select "Next."
   
   
    
8. Enter the desired information.
   
   IP Address:  The IP Address you would like the device to have.
   MAC Address: The MAC address of the device you're creating a fixed IP for.
   
   
    
9. Select the icon next to the words "Add a DHCP Static."
   
   
    
10. On the next screen, select the dropdown menu next to "Inheritance Property", change it to "Set", and then select "OK."
    
    
    
     
11. Next, check the box next to "Add a DHCP Static."
    
    NOTE:  If necessary, repeat steps 9 and 10 to be able to check the box next to "Update DNS."
    
    
12. Check mark the box next to "Use IPAM name instead of DHCP client name". NOTE:  If necessary, repeat steps 9 and 10 to be able to check the box.
    
     
13. Enter the IP address name and select "Next."

     14. On the "Aliases Configuration" screen, simply select "OK."

Deleting a Fixed Lease (DHCP Reservation)

1. Navigate to eip4.cc.uic.edu and log in using your NetID and password.

NOTE:  You will need to be on campus, or connect to a UIC network using VPN to access this page.

2. Enter the IP address in the Global Search.

3. Click on the properties icon on the right of the A record under "DNS A & AAAA RR".

3. The DNS A record appears in the All RRs view behind the Results window. Click the x on the Results window to close it.

4. The DNS A record appears in the All RRs view. Check mark the box for the A record entry and click the Delete icon.

5. Enter the IP address for the records deleted in step4 in the Global Search. Confirm that the following fields no longer appear: IP address, DHCP Lease, DNS A & AAAA RR, and DNS RR for reverse zones. If they appear, repeat steps 3-5 for each properties icon that remains. Once the records are properly deleted the Results window displays without: IP address, DHCP Lease, DNS A & AAAA RR, and DNS RR for reverse zones.