5
5. The Attribute field, with a variable length, carries the specific authentication, authorization, and
accounting information that defines the configuration details of the request or response. This field
contains multiple attributes, and each attribute is represented in triplets of Type, Length, and Value.
 Type (1 byte long)—Indicates the type of the attribute. It is in the range 1 to 255. See Table 2 for
commonly used attributes for RADIUS authentication, authorization and accounting, which are
defined in RFC 2865, RFC 2866, RFC 2867, and RFC 2868. For more information about commonly
used standard RADIUS attributes, see ―Commonly used standard RADIUS attributes.―
 Length (1 byte long)—Indicates the length of the attribute in bytes, including the Type, Length, and
Value fields.
 Value (up to 253 bytes)—Value of the attribute. Its format and content depend on the Type and
Length fields.
Table 2 RADIUS attributes
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