DHCP : Java Glossary

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DHCP
DHCP (Dynamic Host Configuration Protocol) is a technique used in W95, W98, Me, NT, W2K, XP, W2003, Vista, W2008, W7-32, W7-64, W8-32, W8-64, W2012, W10-32 and W10-64 for dynamically assigning IP (Internet Protocol) numbers. A DHCP server assigns IP numbers for a temporary period. They also automatically assign some DNS servers, telling you the IP to use. The magic of DHCP is that workstations don’t need to know the IP of the DHCP server to get started. PPP has a similar mechanism to dynamically assign IP numbers for dial up calls. DHCP is commonly used for 24/7 cable modem access. DHCP is primarily for convenience rather than to allow IP to change frequently. With DHCP, nobody has to assign numbers to individual workstations and configure them individually. All machines are set to DHCP IP assignment. They automatically find themselves a free IP when they are turned on, with the help of a DHCP server. The secondary reason for using DHCP is to make maximal use of a small pool of IP numbers when you have more users than IP available.

DHCP servers in my experience tend to be somewhat flaky. You can cheat and set the IP it keeps giving you as a permanent IP. If you don’t use DHCP, you must also manually configure some DNS (Domain Name Service) server IPs. If anything goes wrong, revert to DHCP, reboot and pray the DHCP servers are up.

You can also clear its pea brain with:

When you have a router you can use static or DHCP IP assignment for for your computers to talk to the router and also for the router to talk to your IAP (Internet Access Provider).

IPCONFIG /release
IPCONFIG /renew

You then have configure the DHCPs (Dynamic Host Configuration Protocols) in your various computers attached to the LAN (Local Area Network) and for the the DHCP in the router.

Alternate DNS Servers

Your DNS servers may have the wrong IP or may not have the domain you want on file. If your ISP is not providing reliable DNS servers, or you suspect there is a problem with them you can try out some alternates. Of course, these alternates may fail too, so don’t forget how to put them back the way they were. Since your ISPs servers are physically close, they should provide the fastest service. To configure DNS servers, Click Control Panel ⇒ Network & Internet ⇒ Network Connections ⇒ right click Properties.

24/7
DNS
Dyn: three free services of interest to people who host webservers on their home machines
IP
PPP

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