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Appendix A : RADIUS attributes
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-Address
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. With the LAN access
service provided by an H3C device, this attribute carries the MAC address of the
user in the format HHHH-HHHH-HHHH.
32 NAS-Identifier
Identification
that the NAS uses for indicating itself
