Skip to main content

What is the dynamic host configuration protocol DHCP





What is DHCP?

Dynamic Host Configuration Protocol (DHCP) is a network protocol that works to give an IP address to the device in the network. DHCP protocol is used when a new device joins the network. And the device needs an address to work on the Internet. Then it is used. We do not need to set the IP address manually every time.


History of DHCP :-

The DHCP protocol was developed in 1993. DHCP was also recognized by IETF (Internet Engineering Task Force). The DHCP protocol is a part of BOOTP (BOOTSTRAP protocol). This protocol works to give an IP address to the device.


How DHCP works :-

1. DHCP Discover: When a device connects to the network, it sends a DHCP Discover broadcast message. Which is sent to the network devices, its job is to find the DHCP server on the network.

2. DHCP OFFER: When the DHCP server sends a message to the discoverer, it sends it in the form of an offer. It gives the temporary IP address of the device, subnet mask, gateway, and DNS server information.

3. DHCP REQUEST: When the DHCP sends an offer message to the discoverer, it sends it in the form of a request. This DHCP checks the IP of the device and gives it in the DHCP offer.

4. DHCP acknowledgement: When the DHCP server makes a DHCP request, DHCP sends an acknowledgement message. Along with this, it also finds out the IP address.


Features and benefits of DHCP :-

Automation: With the help of DHCP, IP addresses are automatically distributed. So there is no need for manual distribution.

Centralization: The DHCP server keeps the IP addresses of all the devices in the network in one place.

Time saving: Using DHCP saves time. It is easy to build a network.

Error free: Using DHCP can prevent errors in setting IP addresses manually.


Types of DHCP :-

1. DHCP RELAY: DHCP RELAY is used when devices are on different networks. This DHCP RELAY agent forwards DHCP messages.

2. DHCP SNOOPING: DHCP SNOOPING is important for security. It is used to protect against threats in DHCP. It is installed on the switch. And checks the DHCP messages.

3. DHCP FAILOVER: It is used when there are more users. It has two servers, and they work as backups for each other.


Use of DHCP :-

1. Home network: When we connect many devices to the router used in homes, the router gives an IP address to each device.

2. Office: DHCP is also used in offices. When we connect to the office network, it gives us an IP address.

3. Data Center: DHCP is used in large data centers. So that all servers and devices can get an IP address.


Challenges of DHCP :-

Security Risk: The network is not secure from attacks like DHCP spoofing and DHCP starvation.

Dependency: How long the network will work depends on the DHCP server. If the DHCP server fails, the new device does not get an IP address.


Conclusion :-

The DHCP protocol is used to give new IP addresses to the devices connecting to the network. This protocol is used to distribute IP addresses in the network in a correct manner and to avoid complexity. As users are connecting to the network, the use of DHCP is increasing.

Labels:

Comments

Post a Comment

Popular posts from this blog

Common network issues and solutions in computer networks

Common network issues and solutions in computer networks:- Computer networks are an important part of modern organizations. Data is sent and received using it. And it is used for communication and connecting resources. It is necessary to fix the problem of the network. So that the functionality of the network can be increased and made efficient. 1. Connectivity problems :- Problem: If a user is unable to connect to the network. Solution:- Reboot the computer and router: If the user is unable to connect to the network, then he can connect to the network by resetting the circuit first. Check the network cable and connection: if the user is unable to connect to the network. Then check the network cable to see if the network cable is connected correctly or not. And whether the network cable is broken or not. Check the settings of the network adapter: If the user is unable to connect to the network. Then check if the network adapter is connected correctly or not. Check IP address: If the ...
Post a Comment
Read more

What are the troubleshooting methodologies

Network Troubleshooting Methodologies: Network Problem Solving Techniques :- Network problem solving is an important task whose purpose is to identify the network problems and fix them. Therefore, this process demands technical knowledge and use of the right tools. Network management, network engineers, and IT assistants are responsible for identifying and solving network problems. In this article, network troubleshooting and methods will be explained. Problem identification :- The first step in network problem solving is to identify the problem. Many steps have been taken for this: 1. Network monitoring: Any unusual activity occurring on the network can be identified using network monitoring tools. These tools monitor the availability, performance, and security of the network. 2. User reports: It evaluates the problems and complaints received from the users. Then it is known where the problem is occurring in the network. 3. Log File Analysis: Evaluates the log files of network devi...
Post a Comment
Read more

What is a firewall

What is a firewall: An integral part of computer security :- In the context of computer and network security, a firewall is a special device that prevents unauthorized access and helps to secure data. And it restricts network traffic and only allows data coming from reputable sources. Therefore, through this article, the types of firewalls, definitions, benefits, and their functions and rules for implementing them will be explained. Definition of firewall (structure):- A firewall is a security system that has been created to keep the network safe. Its main goal is to block unauthorized traffic and allow only the traffic that comes with the right credentials. It filters network traffic and monitors the data coming and going in the network. Types of firewall :- There are two types of firewalls: software firewalls and hardware firewalls. Apart from this, there are other types of network security. 1. Software Firewall: A software firewall is a program that is applied to a computer or netwo...
Post a Comment
Read more