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Extended radius attributes, Protocols and standards – H3C Technologies H3C S5120 Series Switches User Manual

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1-7

No.

Attribute

No.

Attribute

42 Acct-Input-Octets

89 (unassigned)

43 Acct-Output-Octets

90 Tunnel-Client-Auth-id

44 Acct-Session-Id

91 Tunnel-Server-Auth-id

The attribute types listed in

Table 1-2

are defined by RFC 2865, RFC 2866, RFC 2867, and RFC 2868.

Extended RADIUS Attributes

The RADIUS protocol features excellent extensibility. Attribute 26 (Vender-Specific) defined by RFC

2865 allows a vender to define extended attributes to implement functions that the standard RADIUS

protocol does not provide.

A vendor can encapsulate multiple type-length-value (TLV) sub-attributes in RADIUS packets for

extension in applications. As shown in

Figure 1-5

, a sub-attribute that can be encapsulated in Attribute

26 consists of the following four parts:

z

Vendor-ID (four bytes): Indicates the ID of the vendor. Its most significant byte is 0 and the other

three bytes contain a code complying with RFC 1700. The vendor ID of H3C is 2011.

z

Vendor-Type: Indicates the type of the sub-attribute.

z

Vendor-Length: Indicates the length of the sub-attribute.

z

Vendor-Data: Indicates the contents of the sub-attribute.

Figure 1-5 Segment of a RADIUS packet containing an extended attribute

Protocols and Standards

The protocols and standards related to AAA and RADIUS include:

z

RFC 2865: Remote Authentication Dial In User Service (RADIUS)

z

RFC 2866: RADIUS Accounting

z

RFC 2867: RADIUS Accounting Modifications for Tunnel Protocol Support

z

RFC 2868: RADIUS Attributes for Tunnel Protocol Support

z

RFC 2869: RADIUS Extensions