Note: DHCP Option 82 information for IPv4 addresses can be viewed on an IPv4 network’s
IPv4 addresses table. To add the Circuit ID and Remote ID
columns to the IPv4 addresses table, add the table column using the table customization window.
To create a match class:
- Select the IPAM tab in the sidebar, then select DHCP settings.
- On the DHCP client classes tab, select New.
-
Under General, set the following parameters:
- Name—enter a name for the client class. The name can't contain spaces.
- Description—enter a description for the client class.
- Match option—select the match statement type from the following
options:
- Hardware—matches either a portion of or the entire hardware address. In the Match offset field, enter a value from 1 to 6, where 1 represents the first eight bits of the hardware address and 6 represents the entire 48-bit address. In the Match length field, enter a value between 1 and 7 minus the value in the Match offset field.
- DHCP client identifier—matches an identifier specific to the device requesting an address. This value should be unique inside a network. In the Match offset field, enter a decimal value between 1 and 256. In the Match length field, enter a value between 1 and 257 minus the value in the Match offset field.
- DHCP vendor identifier—matches an identifier provided by the vendor of a specific device. In the Match offset field, enter a decimal value between 0 and 255. In the Match length field, enter a value between 1 and 256 minus the value in the Match offset field.
- Agent circuit identifier—matches the DHCP Option 82 identifier of the terminal DHCP relay agent that receives requests from a device on its network. In the Match offset field, enter a decimal value between 0 and 255. In the Match length field, enter a value between 1 and 256 minus the value in the Match offset field.
- Agent remote identifier—matches the DHCP Option 82 remote identifier used to encode data that's specific to the end point. This value should be globally unique. In the Match offset field, enter a decimal value between 0 and 255. In the Match length field, enter a value between 1 and 256 minus the value in the Match offset field.
- Custom—enter a raw string that maps directly to a Boolean or data expression, using the syntax and grammar supported by the ISC’s DHCP daemon. Don't end the string with a “;” semicolon, because one is automatically added when the condition is deployed.
- In the Change control section, add comments if required.
- Select Create or Create and add another.