What is DHCP?
Dynamic Host Configuration Protocol, a protocol for assigning dynamic IP addresses to devices on a network. With dynamic addressing, a device can have a different IP address every time it connects to the network. In some systems, the device’s IP address can even change while it is still connected. DHCP also supports a mix of static and dynamic IP addresses.
Dynamic addressing simplifies network administration because the software keeps track of IP addresses rather than requiring an administrator to manage the task. This means that a new computer can be added to a network without the hassle of manually assigning it a unique IP address. Many ISPs use dynamic IP addressing for dial-up users.
Advantages
- All the IP configuration information gets automatically configured for your client machine by the DHCP server.
- If you move your client machine to a different subnet, the client will send out its discover message at boot time and work as usual. However, when you first boot up there you will not be able to get back the IP address you had at your previous location regardless of how little time has passed.
- All the IP configuration information gets automatically configured for your client machine by the DHCP server.
- If you move your client machine to a different subnet the client will send out its discover message at boot time and work as usual. However when you first boot up there you will not be able to get back the IP address you had at your previous location regardless of how little time has passed.
- It minimizes the administrative burden. By using DHCP there is no chance to conflict ip address. DHCP support multiple scope like unicast multicast and super scope. By using DHCP relay agent u r provide IP address to another network.
- All the IP configuration information gets automatically configured for your client machine by the DHCP server. If you move your client machine to a different subnet the client will send out it’s discover message at boot time and work as usual. However when you first boot up there you will not be able to get back the IP address you had at your previous location regardless of how little time has passed.
- It Can restrict IP address allocation based on the Mac Address Filtering
Disadvantages
1. Your machine name does not change when you get a new IP address. The DNS (Domain Name System) name is associated with your IP address and therefore does change. This only presents a problem if other clients try to access your machine by its DNS name.
2. Your machine name does not change when you get a new IP address. The DNS (Domain Name System) name is associated with your IP address and therefore does change. This only presents a problem if other clients try to access your machine by its DNS name.
3. When client make query to DHCP server (DHCP Discover) it is UDP query it consume more bandwidth When DHCP server is unavailable client unable to access enterprises network.
4. Your machine name does not change when you get a new IP address. The DNS (Domain Name System) name is associated with your IP address and therefore does change. This only presents a problem if other clients try to access your machine by its DNS name.
