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2-1
2
Appendixes
Commonly Used Standard RADIUS Attributes
Table 2-1 Commonly used standard RADIUS attributes
No. Attribute Description
1 User-Name Name of the user to be authenticated
2 User-Password
User password for PAP authentication, present only in Access-Request
packets in PAP authentication mode.
3 CHAP-Password
Digest of the user password for CHAP authentication, present only in
Access-Request packets in CHAP authentication mode.
4 NAS-IP-Address
IP address for the server to identify a client. Usually, a client is identified
by the IP address of the access interface of the NAS, namely the NAS IP
address. This attribute is present in only Access-Request packets.
5 NAS-Port Physical port of the NAS that the user accesses
6 Service-Type
Type of the service that the user has requested or type of the service to
be provided
7 Framed-Protocol Encapsulation protocol
8
Framed-IP-Addre
ss
IP address to be configured for the user
11 Filter-ID Name of the filter list
12 Framed-MTU
Maximum transmission unit (MTU) for the data link between the user and
NAS. For example, with 802.1X EAP authentication, NAS uses this
attribute to notify the server of the MTU for EAP packets, so as to avoid
oversized EAP packets.
14 Login-IP-Host IP address of the NAS interface that the user accesses
15 Login-Service Type of the service that the user uses for login
18 Reply-Message
Text to be displayed to the user, which can be used by the server to
indicate, for example, the reason of the authentication failure.
26 Vendor-Specific
Vendor specific attribute. A packet can contain one or more such
proprietary attributes, each of which can contain one or more
sub-attributes.
27 Session-Timeout
Maximum duration of service to be provided to the user before
termination of the session
28 Idle-Timeout
Maximum idle time permitted for the user before termination of the
session
31 Calling-Station-Id Identification of the user that the NAS sends to the server.
32 NAS-Identifier Identification that the NAS uses for indicating itself