1-6
Type field
value
Attribute type
Type field
value
Attribute type
10 Framed-Routing
32 NAS-Identifier
11 Filter-ID
33 Proxy-State
12 Framed-MTU
34 Login-LAT-Service
13 Framed-Compression
35 Login-LAT-Node
14 Login-IP-Host
36 Login-LAT-Group
15 Login-Service
37 Framed-AppleTalk-Link
16 Login-TCP-Port
38 Framed-AppleTalk-Network
17 (unassigned)
39 Framed-AppleTalk-Zone
18 Reply-Message
40-59 (reserved
for
accounting)
19 Callback-Number
60 CHAP-Challenge
20 Callback-ID
61 NAS-Port-Type
21 (unassigned)
62 Port-Limit
22 Framed-Route
63 Login-LAT-Port
The RADIUS protocol has good scalability. Attribute 26 (Vender-Specific) defined in this protocol allows
a device vendor to extend RADIUS to implement functions that are not defined in standard RADIUS.
Figure 1-4
depicts the format of attribute 26. The Vendor-ID field used to identify a vendor occupies four
bytes, where the first byte is 0, and the other three bytes are defined in RFC 1700. Here, the vendor can
encapsulate multiple customized sub-attributes (containing vendor-specific Type, Length and Value) to
implement a RADIUS extension.
Figure 1-4
Vendor-specific attribute format
Type
……
Length
0
7
Vendor-ID
7
15
31
Vendor-ID
Type (specified)
Length (specified)
Specified attribute value
……
