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This article explains the most common ones from the DHCP option list and its basics as well. Let's start reading.
What is DHCP
DHCP is described as a standard by the Internet Engineering Task Force and is based on the Bootstrap Protocol, which it shares many implementation details with. It is a technology that permits the automated assignment of an Internet Protocol host's IP address as well as other relevant configuration information, such as the subnet mask and default gateway. The necessary TCP/IP configuration information may be obtained by hosts using DHCP from a DHCP server.
This technology comprises of two network components: a network DHCP server that is deployed centrally and client instances of the protocol stack on each computer or device. This eliminates the necessity for manually configuring each network device separately. A client uses DHCP to make periodic requests to the server for a set of settings after connecting to the network.
DHCP option List
Multiple PCs, as well as other gadgets like mobile phones, tablets, and wireless printers, will receive IP addresses when DHCP is enabled. You might occasionally need to know a certain device's IP address or keep tabs on who is connected to your network. You may get this information from the DHCP Client List in either of these scenarios.
The devices and IP addresses issued by the server or router are simply listed in this client list. Every device that has a wired or wireless connection to the network is included in this list. You won't have access to this list if DHCP is disabled. Additionally, devices that are not network-connected won't show up on the list. Giving DHCP options is a smart way to set up this network with DHCP clients. In addition to providing the IP address, the DHCP protocol allows the specification of a significant number of factors that are very beneficial for device design. These are the most common in the options list are:
1. DHCP Option 1: Apply a subnet mask to the interface requesting an IP address.
2. DHCP option 3: Acquire IP through the interface's default router or feedback gateway.
3. DHCP Option 6 is also called DNS server which is used to assign the DHCP client a DNS server.
4. DHCP Option 51 is also called the lease time option in which lease time for the DHCP client is assigned.
5. DHCP Option 42 is also termed anNTP server and is used to assign the NTP server to the DHCP client.
6. DHCP Options 69 and 70 are used for email transmission and receiving with SMTP and POP3 servers.
7. DHCP Option 81 enables automated updating of the client's related DNS entries.
8. DHCP Option 138 gives the DHCP client access to CAPWAP Access Controller addresses.
9. DHCP Option 150 gives the DHCP client access to a TFTP server.
Vendor class identification (a.k.a option 60) and client identifier (a.k.a option 61) are the two primary types in the DHCP option list when it comes to client requirements. The MAC address of the network interface on a local network is typically used as the client identification since it is distinct and aids the DHCP server in managing its clients and leases. The vendor class identification, which describes the vendor type and settings of a DHCP client in a short character string, is more intriguing. The format is flexible and open, allowing the server to modify the content and answer options as needed.
Fixed 10G Up L3 Switch
Fixed 10G Up L2 Switch
Metal Casing
Ceiling AP
NAC Software
Modular Switch
10G Fixed Switch
Wall-Mount AP
Core-side Optical Transceivers
Wi-Fi 5
Wi-Fi 6
EG1500 Series
Wi-Fi 7 Router
Wi-Fi 5 Extender
Wi-Fi 4 Extender
Wi-Fi 4 Router
Service Center
Connect
Try searching our site
Ruijie Networks websites use cookies to deliver and improve the website experience.
See our cookie policy for further details on how we use cookies and how to change your cookie settings.
Cookie Manager
When you visit any website, the website will store or retrieve the information on your browser. This process is mostly in the form of cookies. Such information may involve your personal information, preferences or equipment, and is mainly used to enable the website to provide services in accordance with your expectations. Such information usually does not directly identify your personal information, but it can provide you with a more personalized network experience. We fully respect your privacy, so you can choose not to allow certain types of cookies. You only need to click on the names of different cookie categories to learn more and change the default settings. However, blocking certain types of cookies may affect your website experience and the services we can provide you.
Through this type of cookie, we can count website visits and traffic sources in order to evaluate and improve the performance of our website. This type of cookie can also help us understand the popularity of the page and the activity of visitors on the site. All information collected by such cookies will be aggregated to ensure the anonymity of the information. If you do not allow such cookies, we will have no way of knowing when you visited our website, and we will not be able to monitor website performance.
This type of cookie is necessary for the normal operation of the website and cannot be turned off in our system. Usually, they are only set for the actions you do, which are equivalent to service requests, such as setting your privacy preferences, logging in, or filling out forms. You can set your browser to block or remind you of such cookies, but certain functions of the website will not be available. Such cookies do not store any personally identifiable information.
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How can we help you?