Dualog Network Control - DHCP Server configuration

INTRODUCTION

The Dynamic Host Configuration Protocol (DHCP) is a protocol that is used to automatically assign IP addresses to computers, networked equipment (printers, disk drives), and handheld devices.

This article explains how to configure the Dualog server onboard as a DHCP server and lease IP addresses to client devices on a network.

STEPS

1. Login to Dualog Portal with either Owner or Member access type account.
2. Expand the menu located on the top-left corner > Connection Suite > Network Control
3. Click on "Configure Network Control" > Select a vessel
4.  Under DHCP Leases tab > click on "Create DHCP Server"
5. Fill in all values within the DHCP Server Information
6. Add the respective DHCP options
7. Save and close

DHCP SERVER INFORMATION

1. DHCP SERVER
   • This field must match the adapter IP address of the Dualog server's designated physical network card. In other words, an identical IP address must be configured as follows:
      

   • If this address is obtained automatically, avoid configuring another DHCP server on the same network.

   • Ensure that this service is enabled and running.
      

2. RANGE START->END

   • This range defines the pool of IP addresses assigned to devices on the network.

   • A single range can support up to 255 addresses. However, the “.0” address is reserved as the network address, and the “.255” address is reserved as the broadcast address. These addresses cannot be assigned to hosts.

   • Make sure that the network range matches the address of the DHCP server. 
   • Example: (10.0.0.5 -> 10.0.0.254), with the DHCP server IP as 10.0.0.1
3. SUBNET MASK
   • A subnet mask is a number that distinguishes the network address and the host address within an IP address. (Example: 255.255.255.0 = /24)
   • This field must match the subnet mask of the Dualog server's designated physical network card. In other words, an identical subnet mask must be configured as follows:
4. LEASE TIME
   •  The Lease Time indicates how long a device is allowed to use that IP Address.

DHCP OPTIONS

• Router
  Specifies the default gateway used by the DHCP client. The value must be the gateway’s IP address. If the DHCP server is running on the same system as DuaCore Pro, this should match the DHCP server’s IP address.
  Multiple entries are supported, but not recommended, as clients may select any of the configured gateways.

• Time Server
  Specifies the NTP server used for time synchronization. The value must be a valid IP address.

• DNS Server
  Defines the DNS servers used by the DHCP client. Each entry must be an IP address, and multiple entries can be configured.

• Domain Name
  Specifies the DNS suffix for the connection. The value is a single string and can only be configured once. This is primarily relevant when clients use fully qualified domain names.

• MTU Interface
  Defines the MTU (Maximum Transmission Unit) for the DHCP client interface. The value must be numeric and can only be configured once.

• Same MTU in Subnet
  Indicates whether all connected subnets use the same MTU.

DHCP LEASE TABLE