rfc2866.txt
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RFC 2866 RADIUS Accounting June 2000
0 1 2
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Length | String ...
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Type
50 for Acct-Multi-Session-Id.
Length
>= 3
String
The String field SHOULD contain UTF-8 encoded 10646 [7] characters.
5.12. Acct-Link-Count
Description
This attribute gives the count of links which are known to have been
in a given multilink session at the time the accounting record is
generated. The NAS MAY include the Acct-Link-Count attribute in any
Accounting-Request which might have multiple links.
A summary of the Acct-Link-Count attribute format is show below. The
fields are transmitted from left to right.
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Length | Value
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Value (cont) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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RFC 2866 RADIUS Accounting June 2000
Type
51 for Acct-Link-Count.
Length
6
Value
The Value field is four octets, and contains the number of links
seen so far in this Multilink Session.
It may be used to make it easier for an accounting server to know
when it has all the records for a given Multilink session. When
the number of Accounting-Requests received with Acct-Status-Type =
Stop and the same Acct-Multi-Session-Id and unique Acct-Session-
Id's equals the largest value of Acct-Link-Count seen in those
Accounting-Requests, all Stop Accounting-Requests for that
Multilink Session have been received.
An example showing 8 Accounting-Requests should make things
clearer. For clarity only the relevant attributes are shown, but
additional attributes containing accounting information will also
be present in the Accounting-Request.
Multi-Session-Id Session-Id Status-Type Link-Count
"10" "10" Start 1
"10" "11" Start 2
"10" "11" Stop 2
"10" "12" Start 3
"10" "13" Start 4
"10" "12" Stop 4
"10" "13" Stop 4
"10" "10" Stop 4
5.13. Table of Attributes
The following table provides a guide to which attributes may be found
in Accounting-Request packets. No attributes should be found in
Accounting-Response packets except Proxy-State and possibly Vendor-
Specific.
# Attribute
0-1 User-Name
0 User-Password
0 CHAP-Password
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RFC 2866 RADIUS Accounting June 2000
0-1 NAS-IP-Address [Note 1]
0-1 NAS-Port
0-1 Service-Type
0-1 Framed-Protocol
0-1 Framed-IP-Address
0-1 Framed-IP-Netmask
0-1 Framed-Routing
0+ Filter-Id
0-1 Framed-MTU
0+ Framed-Compression
0+ Login-IP-Host
0-1 Login-Service
0-1 Login-TCP-Port
0 Reply-Message
0-1 Callback-Number
0-1 Callback-Id
0+ Framed-Route
0-1 Framed-IPX-Network
0 State
0+ Class
0+ Vendor-Specific
0-1 Session-Timeout
0-1 Idle-Timeout
0-1 Termination-Action
0-1 Called-Station-Id
0-1 Calling-Station-Id
0-1 NAS-Identifier [Note 1]
0+ Proxy-State
0-1 Login-LAT-Service
0-1 Login-LAT-Node
0-1 Login-LAT-Group
0-1 Framed-AppleTalk-Link
0-1 Framed-AppleTalk-Network
0-1 Framed-AppleTalk-Zone
1 Acct-Status-Type
0-1 Acct-Delay-Time
0-1 Acct-Input-Octets
0-1 Acct-Output-Octets
1 Acct-Session-Id
0-1 Acct-Authentic
0-1 Acct-Session-Time
0-1 Acct-Input-Packets
0-1 Acct-Output-Packets
0-1 Acct-Terminate-Cause
0+ Acct-Multi-Session-Id
0+ Acct-Link-Count
0 CHAP-Challenge
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RFC 2866 RADIUS Accounting June 2000
0-1 NAS-Port-Type
0-1 Port-Limit
0-1 Login-LAT-Port
[Note 1] An Accounting-Request MUST contain either a NAS-IP-Address
or a NAS-Identifier (or both).
The following table defines the above table entries.
0 This attribute MUST NOT be present
0+ Zero or more instances of this attribute MAY be present.
0-1 Zero or one instance of this attribute MAY be present.
1 Exactly one instance of this attribute MUST be present.
6. IANA Considerations
The Packet Type Codes, Attribute Types, and Attribute Values defined
in this document are registered by the Internet Assigned Numbers
Authority (IANA) from the RADIUS name spaces as described in the
"IANA Considerations" section of RFC 2865 [2], in accordance with BCP
26 [8].
7. Security Considerations
Security issues are discussed in sections concerning the
authenticator included in accounting requests and responses, using a
shared secret which is never sent over the network.
8. Change Log
US-ASCII replaced by UTF-8.
Added notes on Proxy.
Framed-IP-Address should contain the actual IP address of the user.
If Acct-Session-ID was sent in an access-request, it must be used in
the accounting-request for that session.
New values added to Acct-Status-Type.
Added an IANA Considerations section.
Updated references.
Text strings identified as a subset of string, to clarify use of
UTF-8.
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RFC 2866 RADIUS Accounting June 2000
9. References
[1] Rigney, C., "RADIUS Accounting", RFC 2139, April 1997.
[2] Rigney, C., Willens, S., Rubens, A. and W. Simpson, "Remote
Authentication Dial In User Service (RADIUS)", RFC 2865, June
2000.
[3] Bradner, S., "Key words for use in RFCs to Indicate Requirement
Levels", BCP 14, RFC 2119, March, 1997.
[4] Postel, J., "User Datagram Protocol", STD 6, RFC 768, August
1980.
[5] Rivest, R. and S. Dusse, "The MD5 Message-Digest Algorithm", RFC
1321, April 1992.
[6] Reynolds, J. and J. Postel, "Assigned Numbers", STD 2, RFC 1700,
October 1994.
[7] Yergeau, F., "UTF-8, a transformation format of ISO 10646", RFC
2279, January 1998.
[8] Alvestrand, H. and T. Narten, "Guidelines for Writing an IANA
Considerations Section in RFCs", BCP 26, RFC 2434, October 1998.
10. Acknowledgements
RADIUS and RADIUS Accounting were originally developed by Steve
Willens of Livingston Enterprises for their PortMaster series of
Network Access Servers.
11. Chair's Address
The RADIUS working group can be contacted via the current chair:
Carl Rigney
Livingston Enterprises
4464 Willow Road
Pleasanton, California 94588
Phone: +1 925 737 2100
EMail: cdr@telemancy.com
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RFC 2866 RADIUS Accounting June 2000
12. Author's Address
Questions about this memo can also be directed to:
Carl Rigney
Livingston Enterprises
4464 Willow Road
Pleasanton, California 94588
EMail: cdr@telemancy.com
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RFC 2866 RADIUS Accounting June 2000
13. Full Copyright Statement
Copyright (C) The Internet Society (2000). All Rights Reserved.
This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published
and distributed, in whole or in part, without restriction of any
kind, provided that the above copyright notice and this paragraph are
included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of
developing Internet standards in which case the procedures for
copyrights defined in the Internet Standards process must be
followed, or as required to translate it into languages other than
English.
The limited permissions granted above are perpetual and will not be
revoked by the Internet Society or its successors or assigns.
This document and the information contained herein is provided on an
"AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Acknowledgement
Funding for the RFC Editor function is currently provided by the
Internet Society.
Rigney Informational [Page 28]
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