HP V1910 Switch Series User Manual page 371

The Length field (2 byte long) indicates the length of the entire packet, including the Code,
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Identifier, Length, Authenticator, and Attribute fields. Bytes beyond this length are considered
padding and are neglected upon reception. If the length of a received packet is less than this
length, the packet is dropped. The value of this field is in the range 20 to 4096.
The Authenticator field (16 byte long) is used to authenticate replies from the RADIUS server and
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to encrypt user passwords. There are two types of authenticators: request authenticator and
response authenticator.
The Attributes field, variable in length, carries the specific authentication, authorization, and
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accounting information that defines the configuration details of the request or response. This field
may contain multiple attributes, each with three sub-fields: Type, Length, and Value.
 Type (1 byte long)—Indicates the type of the attribute. It is in the range 1 to 255. Commonly used
attributes for RADIUS authentication, authorization and accounting are listed in
 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 128 RADIUS attributes
No. Attribute
1 User-Name
2 User-Password
3 CHAP-Password
4 NAS-IP-Address
5 NAS-Port
6 Service-Type
7 Framed-Protocol
8 Framed-IP-Address
9 Framed-IP-Netmask
10 Framed-Routing
11 Filter-ID
12 Framed-MTU
13 Framed-Compression
14 Login-IP-Host
15 Login-Service
16 Login-TCP-Port
17 (unassigned)
18 Reply_Message
19 Callback-Number
20 Callback-ID
21 (unassigned)
22 Framed-Route
No. Attribute
45 Acct-Authentic
46 Acct-Session-Time
47 Acct-Input-Packets
48 Acct-Output-Packets
49 Acct-Terminate-Cause
50 Acct-Multi-Session-Id
51 Acct-Link-Count
52 Acct-Input-Gigawords
53 Acct-Output-Gigawords
54 (unassigned)
55 Event-Timestamp
56-59 (unassigned)
60 CHAP-Challenge
61 NAS-Port-Type
62 Port-Limit
63 Login-LAT-Port
64 Tunnel-Type
65 Tunnel-Medium-Type
66 Tunnel-Client-Endpoint
67 Tunnel-Server-Endpoint
68 Acct-Tunnel-Connection
69 Tunnel-Password
Table 128.