OPTION43
DHCP Option 43 Generator
Generate vendor-specific DHCP options for TFTP servers, vendor class identifiers, and custom configurations
Option 43 Configuration Generator
Convert Option 43 Hex to IP Address
About DHCP Option 43
DHCP Option 43 is a vendor-specific option that allows DHCP servers to provide vendor-specific information to DHCP clients. This is commonly used for TFTP server addresses, vendor class identifiers, and other vendor-specific configuration parameters.
Reference: This implementation follows Cisco's official DHCP Option 43 specification for lightweight access points and Wi-Fi 7 APs.
Common Use Cases
- TFTP Server Addresses: Provide IP addresses of TFTP servers for firmware updates
- Vendor Class Identifiers: Identify specific vendor equipment types
- Custom Configuration: Vendor-specific parameters and settings
- Network Services: Point devices to specific network services
Cisco-Specific Methods
WLC Provisioning (f1xxx)
Classic method for lightweight access points to join Wireless LAN Controllers
EWC Conversion (f2xxx)
Embedded Wireless Controller conversion method for integrated solutions
Catalyst to Meraki Migration (f3xxx)
Fast offline migration from Catalyst switches to Meraki cloud-managed devices
Multiple WLC Provisioning
Support for multiple WLC IP addresses for redundancy and load balancing. Format: f1 + length + hexIP1 + hexIP2 + ... (length = number_of_IPs × 4)
Wi-Fi 7 AP Support
Support for Wi-Fi 7 access points including CW9178, CW9176, CW9178I, CW9176I, CW9176D1, CW9172I, CW9172H