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Creating DHCP Profiles

When the SAE receives a DHCP discover request from the router, it uses the client's MAC address to find a DHCP profile in cache or in the directory. If it finds a DHCP profile, the SAE uses the information in the profile to create a discover decision that it returns to the router. The discover decision includes information to select an IP address and DHCP options to configure the DHCP client.

When a DHCP subscriber logs in to the SAE through a Web portal, the SAE registers the subscriber's equipment and creates a cached DHCP profile in the o=AuthCache directory. These profiles are keyed by the MAC address of the DHCP client device. They are created by the grantPublicIp or the registerEquipment methods.

You can also create DHCP profiles manually with SDX Admin or by adding DHCP profile entries to the directory. DHCP profiles are stored in the o=AuthCache directory in the dhcpProfile object class. The dhcpProfile object class is subordinate to the cachedAuthenticationProfles object class. Manually created profiles are keyed by the cn (common name) attribute.

For more information about how the SAE handles DHCP subscribers, see:

To create a DHCP profile with SDX Admin:

  1. Highlight AuthCache, and right-click.
  2. Select New > Cached DHCP Profile.

The New Cached DHCP Profile dialog box appears.

  1. Assign a name to the profile.
  2. Click OK.

The Cached DHCP Profile pane appears.

  1. Fill in the fields as described in this section.

MAC Address

Name

Description

DHCP Pool Name

DHCP IP Address

DHCP Virtual Router

DHCP Options

where option is the option name or number (see Table 15) and values are entered based on the type of option:

To include nonstandard options in a DHCP profile, use the name "option-nnn", where nnn is the option number, and the value is of type "data-string." That is, either a string surrounded in double quotes, or a sequence of hex-encoded bytes, separated by ":".

Boot Server Name

Boot File Name

Virtual Router

Local Interface

Lease Time

User Name

Service Bundle

Radius Class


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