RADIUS Working Group Bernard Aboba
INTERNET-DRAFT Microsoft
Category: Informational Glen Zorn
<draft-ietf-radius-acc-clientmib-01.txt> Microsoft
12 February 1998
RADIUS Accounting Client MIB
1. Status of this Memo
This document is an Internet-Draft. Internet-Drafts are working docu-
ments of the Internet Engineering Task Force (IETF), its areas, and
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The distribution of this memo is unlimited. It is filed as <draft-
ietf-radius-acc-clientmib-01.txt>, and expires August 1, 1998. Please
send comments to the authors.
2. Abstract
This memo defines a set of extensions which instrument RADIUS account-
ing client functions. These extensions represent a portion of the Man-
agement Information Base (MIB) for use with network management proto-
cols in the Internet community. Using these extensions IP-based man-
agement stations can manage RADIUS accounting clients.
3. Introduction
This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
In particular, it describes managed objects used for managing RADIUS
accounting clients.
Today a wide range of network devices, including routers and NASes,
act as RADIUS accounting clients in order to provide accounting ser-
vices. As a result, the effective management of RADIUS accounting
clients is of considerable importance.
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4. The SNMPv2 Network Management Framework
The SNMPv2 Network Management Framework consists of four major compo-
nents. They are:
o RFC 1902 which defines the SMI, the mechanisms used for
describing and naming objects for the purpose of management.
o RFC 1905 which defines the protocol used for network access to
managed objects.
o RFC 1907 defines the core set of managed objects for the
Internet suite of protocols.
o RFC 1909 which defines the administrative aspects of the
framework.
The Framework permits new objects to be defined for the purpose of
experimentation and evaluation.
4.1. Object Definitions
Managed objects are accessed via a virtual information store, termed
the Management Information Base or MIB. Objects in the MIB are
defined using the subset of Abstract Syntax Notation One (ASN.1)
defined in the SMI. In particular, each object object type is named by
an OBJECT IDENTIFIER, an administratively assigned name. The object
type together with an object instance serves to uniquely identify a
specific instantiation of the object. For human convenience, we often
use a textual string, termed the descriptor, to refer to the object
type.
5. Overview
The RADIUS accounting protocol, described in [2], distinguishes
between the client function and the server function. In RADIUS
accounting, clients send Accounting-Requests, and servers reply with
Accounting-Responses. Typically NAS devices implement the client func-
tion, and thus would be expected to implement the RADIUS accounting
client MIB, while RADIUS accounting servers implement the server func-
tion, and thus would be expected to implement the RADIUS accounting
server MIB.
However, it is possible for a RADIUS accounting entity to perform both
client and server functions. For example, a RADIUS proxy may act as a
server to one or more RADIUS accounting clients, while simultaneously
acting as an accounting client to one or more accounting servers. In
such situations, it is expected that RADIUS entities combining client
and server functionality will support both the client and server MIBs.
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5.1. Selected objects
This MIB module contains two scalars as well as a single table:
(1) the RADIUS Accounting Server Table contains one row for each
RADIUS server that the client shares a secret with.
Each entry in the RADIUS Accounting Server Table includes eleven
entries presenting a view of the activity of the RADIUS client.
6. Definitions
RADIUS-ACC-CLIENT-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE,
OBJECT-IDENTITY, experimental,
Counter32, Integer32, Gauge32,
IpAddress, TimeTicks FROM SNMPv2-SMI
DisplayString FROM SNMPv2-TC
MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF;
radiusAccClientMIB MODULE-IDENTITY
LAST-UPDATED "9802121659Z"
ORGANIZATION "IETF RADIUS Working Group."
CONTACT-INFO
" Bernard Aboba
Microsoft
One Microsoft Way
Redmond, WA 98052
US
Phone: +1 425 936 6605
EMail: bernarda@microsoft.com"
DESCRIPTION
"The MIB module for entities implementing the client side of
the Remote Access Dialin User Service (RADIUS) accounting
protocol."
::= { radiusAccounting 2 }
radius OBJECT-IDENTITY
STATUS current
DESCRIPTION
"The OID assigned to RADIUS MIB work by the IANA."
::= { experimental 79 }
radiusAccounting OBJECT IDENTIFIER ::= {radius 2}
radiusAccClientMIBObjects OBJECT IDENTIFIER ::= { radiusAccClientMIB 1 }
radiusAccClient OBJECT IDENTIFIER ::= { radiusAccClientMIBObjects 1 }
radiusAccClientInvalidServerAddresses OBJECT-TYPE
SYNTAX Counter32
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MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of RADIUS Accounting-Response packets
received from unknown addresses since client start-up."
::= { radiusAccClient 1 }
radiusAccClientIdentifier OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The NAS-Identifier of the RADIUS accounting client. This
is not necessarily the same as sysName in MIB II."
::= { radiusAccClient 2 }
radiusAccServerTable OBJECT-TYPE
SYNTAX SEQUENCE OF RadiusAccServerEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The (conceptual) table listing the RADIUS accounting
servers with which the client shares a secret."
::= { radiusAccClient 3 }
radiusAccServerEntry OBJECT-TYPE
SYNTAX RadiusAccServerEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) representing a RADIUS
accounting server with which the client shares a secret."
INDEX { radiusAccServerIndex }
::= { radiusAccServerTable 1 }
RadiusAccServerEntry ::= SEQUENCE {
radiusAccServerIndex Integer32,
radiusAccServerAddress IpAddress,
radiusAccClientServerPortNumber Integer32,
radiusAccClientRoundTripTime TimeTicks,
radiusAccClientRequests Counter32,
radiusAccClientRetransmissions Counter32,
radiusAccClientResponses Counter32,
radiusAccClientMalformedResponses Counter32,
radiusAccClientBadAuthenticators Counter32,
radiusAccClientPendingRequests Gauge32,
radiusAccClientTimeouts Counter32,
radiusAccClientUnknownType Counter32
}
radiusAccServerIndex OBJECT-TYPE
SYNTAX Integer32 (0..MAX)
MAX-ACCESS not-accessible
STATUS current
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DESCRIPTION
"A number uniquely identifying each RADIUS
Accounting server with which this client
communicates."
::= { radiusAccServerEntry 1 }
radiusAccServerAddress OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The IP address of the RADIUS accounting server
referred to in this table entry."
::= { radiusAccServerEntry 2 }
radiusAccClientServerPortNumber OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The UDP port the client is using to send requests to
this server."
::= { radiusAccServerEntry 3 }
radiusAccClientRoundTripTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The time interval between the most recent
Accounting-Response and the Accounting-Request that
matched it from this RADIUS accounting server."
::= { radiusAccServerEntry 4 }
-- Request/Response statistics
-- Ignoring Unknown Types, then
-- AccountingRequests + Retransmissions = AccountingResponses+
-- PendingRequests + Timeouts
radiusAccClientRequests OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of RADIUS Accounting-Request packets
sent since client start-up. This does not include
retransmissions."
::= { radiusAccServerEntry 5 }
radiusAccClientRetransmissions OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
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"The total number of RADIUS Accounting-Request packets
retransmitted to this RADIUS accounting server since
client start-up. Retransmissions include retries where
the Identifier and Acct-Delay have been updated, as
well as those in which they remain the same."
::= { radiusAccServerEntry 6 }
radiusAccClientResponses OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of RADIUS Accounting-Response
packets received from this server since client start-up."
::= { radiusAccServerEntry 7 }
radiusAccClientMalformedResponses OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of malformed RADIUS Accounting-Response
packets received from this server since client start-up.
Malformed packets include packets with an
invalid length. Bad authenticators are not included as
malformed accounting responses."
::= { radiusAccServerEntry 8 }
radiusAccClientBadAuthenticators OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of RADIUS Accounting-Response
packets which contained invalid authenticators
received from this server since client start-up."
::= { radiusAccServerEntry 9 }
radiusAccClientPendingRequests OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of RADIUS Accounting-Request packets
sent to this server that have not yet timed out or
received a response. This variable is incremented when an
Accounting-Request is sent and decremented due to
receipt of an Accounting-Response, a timeout or
a retransmission."
::= { radiusAccServerEntry 10 }
radiusAccClientTimeouts OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
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STATUS current
DESCRIPTION
"The total number of accounting timeouts to this server
since client startup. After a timeout the client may
retry to the same server, send to a different server, or
give up. A retry to the same server is counted as a
retransmit as well as a timeout. A send to a different
server is counted as an Accounting-Request as well as a timeout."
::= { radiusAccServerEntry 11 }
radiusAccClientUnknownType OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of RADIUS packets of unknown type which
were received from this server on the accounting port
since client start-up."
::= { radiusAccServerEntry 12 }
-- conformance information
radiusAccClientMIBConformance
OBJECT IDENTIFIER ::= { radiusAccClientMIB 2 }
radiusAccClientMIBCompliances
OBJECT IDENTIFIER ::= { radiusAccClientMIBConformance 1 }
radiusAccClientMIBGroups
OBJECT IDENTIFIER ::= { radiusAccClientMIBConformance 2 }
-- compliance statements
radiusAccClientMIBCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for accounting clients
implementing the RADIUS Accounting Client MIB."
MODULE -- this module
MANDATORY-GROUPS { radiusAccClientMIBGroup }
::= { radiusAccClientMIBCompliances 1 }
-- units of conformance
radiusAccClientMIBGroup OBJECT-GROUP
OBJECTS { radiusAccClientIdentifier,
radiusAccClientInvalidServerAddresses,
radiusAccServerAddress,
radiusAccClientServerPortNumber,
radiusAccClientRoundTripTime,
radiusAccClientRequests,
radiusAccClientRetransmissions,
radiusAccClientResponses,
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radiusAccClientMalformedResponses,
radiusAccClientBadAuthenticators,
radiusAccClientPendingRequests,
radiusAccClientTimeouts,
radiusAccClientUnknownType
}
STATUS current
DESCRIPTION
"The basic collection of objects providing management of
RADIUS Accounting Clients."
::= { radiusAccClientMIBGroups 1 }
END
7. Security considerations
All MIB variables described in this document are read-only.
8. Acknowledgments
Thanks to Narendra Gidwani of Microsoft, Allan C. Rubens of MERIT,
Carl Rigney of Livingston and Peter Heitman of American Internet Cor-
poration for useful discussions of this problem space.
9. References
[1] C. Rigney, A. Rubens, W. Simpson, S. Willens. "Remote Authenti-
cation Dial In User Service (RADIUS)." RFC 2138, Livingston, Merit,
Daydreamer, April, 1997.
[2] C. Rigney. "RADIUS Accounting." RFC 2139, Livingston, April,
1997.
[3] C. Rigney, W. Willats. "RADIUS Extensions." draft-ietf-radius-
ext-00.txt, Livingston, January, 1997.
[4] "Information processing systems - Open Systems Interconnection -
Specification of Abstract Syntax Notation One (ASN.1)", International
Organization for Standardization, International Standard 8824, Decem-
ber 1987.
[5] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Introduc-
tion to Community-based SNMPv2", RFC 1901, SNMP Research, Inc., Cisco
Systems, Dover Beach Consulting, Inc., International Network Services,
January, 1996.
[6] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Structure
of Management Information for Version 2 of the Simple Network Manage-
ment Protocol (SNMPv2)", RFC 1902, SNMP Research, Inc., Cisco Systems,
Dover Beach Consulting, Inc., International Network Services, January,
1996.
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[7] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Textual
Conventions for version 2 of the the Simple Network Management Proto-
col (SNMPv2)", RFC 1903, SNMP Research, Inc., Cisco Systems, Dover
Beach Consulting, Inc., International Network Services, January, 1996.
[8] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Confor-
mance Statements for version 2 of the the Simple Network Management
Protocol (SNMPv2)", RFC 1904, SNMP Research, Inc., Cisco Systems,
Dover Beach Consulting, Inc., International Network Services, January,
1996.
[9] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Protocol
Operations for Version 2 of the Simple Network Management Protocol
(SNMPv2)", RFC 1905, SNMP Research, Inc., Cisco Systems, Dover Beach
Consulting, Inc., International Network Services, January, 1996.
[10] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Transport
Mappings for Version 2 of the Simple Network Management Protocol
(SNMPv2)", RFC 1906, SNMP Research, Inc., Cisco Systems, Dover Beach
Consulting, Inc., International Network Services, January, 1996.
[11] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Manage-
ment Information Base for Version 2 of the Simple Network Management
Protocol (SNMPv2)", RFC 1907, SNMP Research, Inc., Cisco Systems,
Dover Beach Consulting, Inc., International Network Services, January,
1996.
[12] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Coexis-
tence between Version 1 and Version 2 of the Internet-standard Network
Management Framework", RFC 1908, SNMP Research, Inc., Cisco Systems,
Dover Beach Consulting, Inc., International Network Services, January,
1996.
[13] McCloghrie, K., "An Administrative Infrastructure for SNMPv2",
RFC 1909, Cisco Systems, February, 1996.
10. Authors' Addresses
Bernard Aboba
Microsoft Corporation
One Microsoft Way
Redmond, WA 98052
Phone: 425-936-6605
EMail: bernarda@microsoft.com
Glen Zorn
Microsoft Corporation
One Microsoft Way
Redmond, WA 98052
Phone: 425-703-1559
EMail: glennz@microsoft.com
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