DHCP Not Assigning IP Addresses on WiFi VLAN40 with MikroTik Router

DHCP Not Assigning IP Addresses to WiFi Network on MikroTik Router VLAN40

In this article, we will discuss how to configure VLAN (VLAN40) on a MikroTik router that includes Ethernet ports (ether3, ether4) and a WiFi network. We will cover the key concepts related to this topic and provide a detailed guide on how to resolve the issue of devices not receiving IP addresses from the DHCP server.

What is VLAN?

A Virtual Local Area Network (VLAN) is a network technology that allows network administrators to partition a physical network into isolated logical networks. VLANs can be used to improve network security, simplify network management, and reduce broadcast traffic.

Configuring VLAN on MikroTik Router

To configure VLAN on a MikroTik router, follow these steps:

1. Log in to the MikroTik router's web interface.
2. Go to the /interface vlan menu.
3. Click the Add New button.
4. Enter a name for the VLAN, such as VLAN40.
5. Select the parent interface, which is the physical interface that the VLAN will be associated with, such as ether3 or ether4.
6. Enter a VLAN ID, such as 40.
7. Click the Apply button to save the changes.

Configuring WiFi Network on MikroTik Router

To configure a WiFi network on a MikroTik router, follow these steps:

1. Go to the /interface wireless menu.
2. Click the Add New button.
3. Enter a name for the WiFi network, such as MyWiFiNetwork.
4. Select the mode of the WiFi network, such as ap-bridge or station-bridge.
5. Enter the SSID of the WiFi network, such as MyWiFiNetwork.
6. Configure the WiFi network's security settings, such as WPA2-PSK.
7. Click the Apply button to save the changes.
8. Go to the /interface bridge menu.
9. Click the Add New button.
10. Enter a name for the bridge, such as MyBridge.
11. Add the VLAN interface and the WiFi interface to the bridge.
12. Click the Apply button to save the changes.

Configuring DHCP Server on MikroTik Router

To configure the DHCP server on a MikroTik router, follow these steps:

1. Go to the /ip dhcp server menu.
2. Click the Add New button.
3. Select the interface on which the DHCP server will be enabled, such as the bridge interface MyBridge.
4. Configure the DHCP server's settings, such as the range of IP addresses that will be assigned to clients.
5. Click the Apply button to save the changes.

Troubleshooting DHCP Issues

If devices are not receiving IP addresses from the DHCP server, check the following:

1. Make sure that the DHCP server is enabled.
2. Make sure that the DHCP server's settings match the network configuration, such as the subnet mask and default gateway.
3. Check the DHCP lease database to see if any leases have been assigned to the devices.
4. Check the firewall rules to make sure that DHCP traffic is not being blocked.

• VLAN is a network technology that enables network administrators to partition a physical network into isolated logical networks.
• Configuring VLAN on a MikroTik router involves creating a VLAN interface and associating it with a physical interface.
• Configuring a WiFi network on a MikroTik router involves creating a WiFi interface and adding it to a bridge interface.
• Configuring the DHCP server on a MikroTik router involves enabling the DHCP server on the desired interface and setting the range of IP addresses that will be assigned to clients.
• If devices are not receiving IP addresses from the DHCP server, check the DHCP server's settings and the firewall rules to make sure that DHCP traffic is not being blocked.

References

• MikroTik, "VLAN Configuration," https://wiki.mikrotik.com/wiki/Manual:Interface/VLAN
• MikroTik, "Wireless Setup," https://wiki.mikrotik.com/wiki/Manual:Wireless
• MikroTik, "DHCP Server," https://wiki.mikrotik.com/wiki/Manual:IP/DHCP_Server