Hey All,

The configuration below is to show how to use an Omada Switch as a DHCP Server with DHCP Pools, and DHCP Reservation to support Omada Layer 3 Switch Configuration. I have detailed the steps as much as I can, but if you see any errors, do let me know. I also added a video guide link to the bottom of the post in case you prefer the video guide.

 

Problem Statement:

When using Omada Console to configure SVI and DHCP Server, the Console can not reserve DHCP IP for VLANs that are not defined as Gateway VLAN Interface.

 

Work Around:
Enable DHCP Relay within the Omada Console for each SVI and use TP Link Omada Switch's DHCP Server capability to reserve IP in Stand Alone Mode.

 

Devices:

• ER605 - 192.168.0.1
• SG2008 - 192.168.0.50 (MAC AA-BB-CC-DD-EE-AA)
• SG3428X - 192.168.0.100 (MAC AA-BB-CC-DD-EE-BB)
• OC200 - 192.168.0.10 (MAC AA-BB-CC-DD-EE-CC)
• Workstation PC MAC: AA-BB-CC-DD-EE-FF

 

VLAN Configuration:

• VLAN 1 - 192.168.0.0 - Default VLAN (Gateway)
• VLAN 10 - 192.168.10.0 - Layer 2 VLAN (Switch Only)

 

Assumption:

• VLAN 1 and VLAN 10 already exists and configured
• No ACL

 

Wiring / Connection:

• ER605 [LAN1] <> [LAN1] SG2008 [LAN2] <> [LAN1] OC200
• ER605 [LAN1] <> [LAN1] SG2008 [LAN8] <> [LAN1] SG3428X

 

Goal/Tasks:

• Set Up Layer 3 Switch in Controller Mode
• Set Up DHCP Relay in Controller Mode
• Set Up DHCP Server in Stand Alone Mode
• Reserve 192.168.10.25 IP to WorkStation PC

 

Part 1: Configure L3 Switch in SG3428X in Omada Console

1. Configure SG3428X SVI, and DHCP Relay:
   Devices > SG3428X Switch > Config > VLAN Interface > Edit VLAN 10 > IP Address Mode: Static > IP Addess: 192.168.10.1 > Subnet Mask: 255.255.255.0 > DHCP Mode: DHCP Relay > Server Address > 192.168.0.50 > Apply > Apply

 

Part 2: Configure ER605 in Omada Console

1. Enable ER605 Gateway Static Routing
   Transmission > Routing > Static Route > Create New Route > Name: Route10 > Status: Enable > Destination IP/Subnet:  192.168.10.0/24 > Route Type: Next Hop > Next Hop: 192.168.0.100 > Apply
2. Reserve IP to SG2008
   Services > DHCP Reservation > Create New DHCP Reservation > Network : VLAN 1 > MAC Address: AA-BB-CC-DD-EE-AA > 192.168.0.50 > Status > Enable > Apply
3. Reserve IP to SG2428X
   Services > DHCP Reservation > Create New DHCP Reservation > Network : VLAN 1 > MAC Address: AA-BB-CC-DD-EE-BB > 192.168.0.100 > Status > Enable > Apply
4. Reserve IP to OC200
   Services > DHCP Reservation > Create New DHCP Reservation > Network : VLAN 1 > MAC Address: AA-BB-CC-DD-EE-CC > 192.168.0.10 > Status > Enable > Apply

 

Part 3: Configure SG2008 DHCP Server in Stand Alone Mode

1. Enable DHCP Server
   L3 Features > DHCP Service > DHCP Server > DHCP Server > DHCP Server: Enable > Apply
2. Add IP Pool for VLAN 10
   L3 Features > DHCP Service > DHCP Server > Pool Settings > Add > Pool Name: Pool 10 > Network Address: 192.168.10.0 > Subnet Mask: 255.255.255.0 > Default Gateway: 192.168.10.1 > DNS Server: 192.168.0.1 > Create
3. Reserve IP to WorkStation PC
   L3 Features > DHCP Service > DHCP Server > Manual Binding > Add > Pool Name: Pool 10 > IP Address: 192.168.10.25 > Binding Mode: Hardware Address > Hardware Addess: AA-BB-CC-DD-EE-FF > Hardware Type: Ethernet > Create
4. Save the settings
   Save

 

Part 4: Testing

1. Configure VLAN 10 Access Port
   Devices > SG3428X Switch > Ports > Port 2: Edit > Profile: VLAN 10 > Apply
2. Connect WorkStation PC to SG3428X [Port 2]
3. Observe IP, it should get 192.168.10.25. 

 

Part 5: Verification:

1. Check the IP leased to WorkStation PC in SG2008
   L3 Features > DHCP Service > DHCP Client List > Type: Manual > Left Lease Time(s): Infinite
2. Check the IP leased to WorkStation PC in Omada Console
   Clients > Workstation PC > IP Address

 

If you would like to see the video guide for a more complex set up, you can refer to the logical diagram below and then check this out: