MSFT 50: A Deeper Dive into DHCP Vendor Class Identifiers
Understanding DHCP Vendor Class Identifiers
Dynamic Host Configuration Protocol (DHCP) plays a crucial role in network communication, allowing devices to automatically obtain an IP address and other configuration settings. One important aspect of DHCP is the vendor class identifier, which identifies the type and model of device requesting an IP address.
MSFT 50 vs. MSFT 5_0
The MSFT 50 vendor class identifier is commonly associated with Windows devices. However, it has been observed that some Windows-based devices now show up as MSFT 5_0. This change is primarily due to an update in the Client Vendor Name for these devices.
Option 60 Field Values
In the DHCP request, the Option 60 field carries information about the vendor class identifier and additional vendor-specific data. For Windows clients, the value of the Option 60 field is MSFT 50. Conversely, Android devices using dhcpcd-5.5.6 typically have an Option 60 field value of dhcpcd-5.5.6.
Vendor Class Identification
The following table summarizes the relationship between vendor class identifiers and their corresponding devices: | Vendor Class Identifier | Device Type | |---|---| | MSFT 50 | Windows devices | | dhcpcd-5.5.6 | Android devices | | android-dhcp-13 | Android devices running Android 13 |
Market Share and Usage
Microsoft has claimed three vendor class identifiers, with MSFT 50 being the most widely used. This is due to its prevalence in older Windows operating systems, including Windows 98, which still has a market share of approximately 0.01%.
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