Shulou(Shulou.com)06/01 Report--

Today, I would like to talk to you about what the principle of DHCP is, many people may not know much about it. In order to make you understand better, the editor has summarized the following contents for you. I hope you can get something according to this article.

DHCP server: dynamic host configuration protocol.

Function:

Ensure that the end host gets the IP address automatically.

Principle:

Cpact S, server / server

1. The client broadcaster sends and sends DHCP discover messages

2. All DHCP Server can receive the DHCP Discover message sent by DHCP Client, and all DHCP Server will respond and send a DHCP Offer message to DHCP Client.

3. DHCP Client can only process one of the DHCP Offer messages, and the general principle is that DHCP Client handles the first received DHCP Offer messages.

4. After receiving the DHCP Request message, DHCP Server determines whether the IP address in the option field is the same as its own address.

If it is different, DHCP Server does not do any processing but clears the corresponding IP address allocation record.

If it is the same, DHCP Server responds to a DHCP ACK message to DHCP Client and adds the lease information of the IP address to the option field.

5. After receiving the DHCP ACK message, DHCP Client checks whether the IP address assigned by DHCP Server can be used.

If available, DHCP Client successfully obtains the IP address and automatically starts the renewal process using the lease based on the IP address

If DHCP Client discovers that the assigned IP address is already in use, DHCP Client sends a DHCP Decline message to DHCPServer, informing DHCPServer that the IP address is disabled, and DHCP Client starts the new address application process.

6. After successfully obtaining the IP address, DHCP Client can release its IP address at any time by sending a DHCP Release message. After receiving the DHCP Release message, DHCP Server will collect the corresponding IP address and reassign it.

After reading the above, do you have any further understanding of the principle of DHCP? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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