Port forwards often point to an internal LAN IP address of a computer.
One such example is if you have had to make a Port Forward (a subject which is discussed in further details in other parts of this guide). In some special cases, this could lead to problems.
Also, if the router is powered off for any reason then it will typically forget about any DHCP leases it has previously handed out. If a computer is powered off for too long (often a day or two, depending on how the router is configured) then the DHCP server will forget which IP address that it handed out to the computer.
The DHCP server remembers which computer that has gotten which IP address, but only for a certain amount of time. If a computer obtains its IP address automatically via DHCP then it is not certain that the computer will obtain the same IP address each and every time you start the computer. When and why would you need to manually configure an IP address on a client? Normally this is avoided since it can cause a few different problems unless it is handled properly by the administrator, which is you. Instead of letting the computer obtain its IP address from the router via DHCP you can choose to manually configure the IP settings on the computer. The router will hand out the first available IP address from that pool and will mark the address as “ leased” so that it does not hand out the same IP address to any other client on the network.Īll clients on the LAN will receive the same Subnet Mask, Default Gateway and DNS Server settings from the DHCP server since those details are common to all clients. In the above example, the router’s DHCP server has a pool of available IP addresses starting with 192.168.1.2 and going all the way up to 192.168.1.254.
#SOFAPLAY MANUALLY ENTER IP ADDRESS FREE#
So when your router sees this DHCP request it will hand out an available IP address from its pool of free IP addresses, together with the other details that the computer needs. If any DHCP server responds then the computer will use DHCP to ask for an IP address and all the other necessary information it needs from the DHCP server. This is done by sending out a DHCP request where it asks if there are any available DHCP servers on the network. When a computer connects to a network it will try to ask for an IP address. This is necessary for the clients to be able to use the router as their Default Gateway. The router is also prepared so that the addresses that the router hands out via DHCP is on the same IP network as the router’s LAN IP address. Usually when you receive your home router it is already pre-configured with a DHCP server to hand out configuration to your computers and other devices. In other words, it is a protocol to automatically hand out configuration to computers and other devices on the network. This is done via DHCP, which stands for Dynamic Host Configuration Protocol. With that in mind, it is only natural that the router also hands out IP addresses and other necessary information to the computers on the network. The router will forward traffic between the clients on the LAN and also between the LAN and the Internet. In a home network, the router usually decides how the LAN should work. DHCP – automatic assignment of IP addresses
#SOFAPLAY MANUALLY ENTER IP ADDRESS MANUAL#
Either automatically, or via manual configuration. There are two ways that a computer can obtain those details. IP address of a Default Gateway (router).A computer needs the following information to function properly on a computer network:
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