proxmox/docs/04-configuration/UDM_PRO_DHCP_RESERVATIONS_GUIDE.md

UDM Pro DHCP Static IP Reservations Configuration Guide

Last Updated: 2025-01-20
VLAN: 11 (MGMT-LAN)
Status: Manual Configuration Required

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Overview

This guide provides step-by-step instructions for configuring static IP reservations (DHCP reservations) for the Management VLAN (VLAN 11) on the UDM Pro.

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Required Static IP Reservations

The following static IP reservations need to be configured for VLAN 11 (MGMT-LAN):

IP Address	Device/Hostname	MAC Address	Notes
192.168.11.1	UDM Pro (Gateway)	UDM Pro MAC	Gateway address
192.168.11.10	ML110 (Proxmox)	[ML110 MAC]	Proxmox host
192.168.11.11	R630-01	[R630-01 MAC]	R630 node 1
192.168.11.12	R630-02	[R630-02 MAC]	R630 node 2
192.168.11.13	R630-03	[R630-03 MAC]	R630 node 3
192.168.11.14	R630-04	[R630-04 MAC]	R630 node 4

Note: MAC addresses need to be obtained from the devices or UniFi Controller.

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Configuration Steps

Method 1: Via Network Settings (Recommended)

1. Access UniFi Network Web Interface:

   • Open browser: https://192.168.0.1
   • Log in with admin credentials

2. Navigate to Network Settings:

   • Go to Settings → Networks
   • Click on MGMT-LAN network (VLAN 11)

3. Configure DHCP Reservations:

   • Scroll to DHCP Settings section
   • Look for DHCP Reservations or Static Leases option
   • Click Add Reservation or Add Static Lease

4. Add Each Reservation:

   For each device:

   • IP Address: Enter the static IP (e.g., 192.168.11.10)
   • MAC Address: Enter the device MAC address
   • Hostname (optional): Enter device name (e.g., ML110, R630-01)
   • Click Save or Add

5. Verify Reservations:

   • Review the list of reservations
   • Ensure all 6 reservations are listed
   • Verify IP addresses and MAC addresses are correct

Method 2: Via Clients/Devices

1. Access Client List:

   • Go to Clients or Devices in the main menu
   • Find the device in the list

2. Configure Static IP:

   • Click on the device
   • Look for Network or IP Configuration settings
   • Select Use Fixed IP Address
   • Enter the static IP address
   • Select network: MGMT-LAN (VLAN 11)
   • Save changes

3. Repeat for Each Device:

   • Configure static IP for each device
   • Ensure they're all on VLAN 11 (MGMT-LAN)

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Obtaining MAC Addresses

From UniFi Controller

1. Via Clients List:

   • Go to Clients in UniFi Network
   • Find the device in the list
   • MAC address is displayed in device details

2. Via Devices List:

   • Go to Devices in UniFi Network
   • Select the device
   • MAC address is shown in device information

From Devices Themselves

Linux/Unix:

ip link show
# or
ifconfig

Windows:

ipconfig /all

Proxmox:

cat /sys/class/net/*/address
# or
ip link show

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Verification

After configuring static IP reservations:

1. Check DHCP Leases:

   • Go to Settings → Networks → MGMT-LAN
   • View Active Leases or DHCP Clients
   • Verify devices are using the reserved IP addresses

2. Test Connectivity:

   • Ping each static IP address
   • Verify devices respond on their reserved IPs
   • Test SSH/management access to each device

3. Check Device Configuration:

   • Ensure devices are set to use DHCP (not static IP configuration)
   • Devices should automatically receive their reserved IP addresses

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Troubleshooting

Device Not Getting Reserved IP

Possible Causes:

• MAC address mismatch
• Device not on VLAN 11
• DHCP reservation not saved/enabled
• Device configured with static IP instead of DHCP

Solutions:

1. Verify MAC address is correct
2. Check device is connected to MGMT-LAN network
3. Verify reservation is enabled in network settings
4. Ensure device is set to use DHCP (not static IP)

IP Address Already in Use

If IP address conflict:

• Check if another device is using the IP
• Verify no duplicate reservations
• Release DHCP lease for conflicting device
• Wait for DHCP lease to expire or manually release

Reservation Not Showing in Active Leases

• Wait a few minutes for DHCP lease renewal
• Disconnect and reconnect device
• Release and renew DHCP lease on device
• Check reservation is enabled and saved

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Alternative: Static IP Configuration on Devices

If DHCP reservations are not available or preferred, configure static IPs directly on devices:

Proxmox (ML110)

1. Via Web Interface:

   • Go to System → Network
   • Edit the network interface
   • Set IP address: 192.168.11.10/24
   • Set Gateway: 192.168.11.1
   • Set DNS: 8.8.8.8, 1.1.1.1

2. Via Command Line:

   # Edit network configuration
   nano /etc/network/interfaces
   # or for Netplan (Ubuntu)
   nano /etc/netplan/*.yaml
   

R630 Nodes

Configure static IP on each node:

• IP: 192.168.11.11 (R630-01), 192.168.11.12 (R630-02), etc.
• Netmask: 255.255.255.0 or /24
• Gateway: 192.168.11.1
• DNS: 8.8.8.8, 1.1.1.1

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Related Documentation

• UDM_PRO_STATUS.md - Configuration status
• UDM_PRO_CONFIGURATION_CHECKLIST.md - Complete configuration checklist

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Last Updated: 2025-01-20