DHCP Vendor Class Identifier Update for Windows and Android Devices
Background
MSFT 5.0 and dhcpcd-5.5.6
In DHCP (Dynamic Host Configuration Protocol) requests, the vendor class identifier indicates the type of device requesting an IP address. Traditionally, Windows computers used the vendor class identifier "MSFT 5.0," while Android devices used "dhcpcd-5.5.6."
Updated Vendor Class Identifier for Windows Devices
Recently, the vendor class identifier for some Windows-based devices has been updated to "MSFT 50." This change indicates that these devices are running a newer version of the DHCP client software.
Light Cat Device Type
When the DHCP Vendor Class Identifier shows as "MSFT 50," it usually indicates that the device is a Windows computer. However, in some cases, it can also indicate a "light cat" device. A light cat is a device that has limited DHCP capabilities and is typically used for IoT (Internet of Things) applications.
DHCP Process
The process of assigning IP addresses to DHCP clients involves the following steps: 1. **DHCPDISCOVER:** The DHCP client sends a DHCPDISCOVER message to the DHCP server. 2. **DHCPOFFER:** The DHCP server responds with a DHCPOFFER message that includes the proposed IP address and other configuration parameters. 3. **DHCPREQUEST:** The DHCP client sends a DHCPREQUEST message to accept the offered IP address. 4. **DHCPACK:** The DHCP server responds with a DHCPACK message to confirm the IP address assignment. By understanding the DHCP Vendor Class Identifier and its implications, network administrators can better manage and troubleshoot IP address assignments on their networks.
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