Table 132 The Identifier field (1 byte long) is used to match request packets and response packets and to
detect duplicate request packets. Request and response packets of the same type have the same
identifier.
Table 133 The Length field (2 byte long) indicates the length of the entire packet, including the Code,
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.
Table 134 The Authenticator field (16 byte long) is used to authenticate replies from the RADIUS server and
to encrypt user passwords. There are two types of authenticators: request authenticator and response
authenticator.
Table 135 The Attributes field, variable in length, carries the specific authentication, authorization, and
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 3.
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.
3. RADIUS attributes
No. Attribute No. Attribute
1 User-Name 45 Acct-Authentic
2 User-Password 46 Acct-Session-Time
3 CHAP-Password 47 Acct-Input-Packets
4 NAS-IP-Address 48 Acct-Output-Packets
5 NAS-Port 49 Acct-Terminate-Cause
6 Service-Type 50 Acct-Multi-Session-Id
7 Framed-Protocol 51 Acct-Link-Count
8 Framed-IP-Address 52 Acct-Input-Gigawords
9 Framed-IP-Netmask 53 Acct-Output-Gigawords
10 Framed-Routing 54 (unassigned)
11 Filter-ID 55 Event-Timestamp
12 Framed-MTU 56-59 (unassigned)
13 Framed-Compression 60 CHAP-Challenge
14 Login-IP-Host 61 NAS-Port-Type
15 Login-Service 62 Port-Limit
16 Login-TCP-Port 63 Login-LAT-Port
17 (unassigned) 64 Tunnel-Type
18 Reply_Message 65 Tunnel-Medium-Type
To Next Page
Loading...
Need help?
General
