Request for Comments: 4671 Enterasys Networks
Obsoletes: 2621 August 2006
Category: Informational
RADIUS Accounting Server MIB for IPv6
Status of This Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2006).
Abstract
This memo defines a set of extensions that instrument RADIUS
accounting server functions. These extensions represent a portion of
the Management Information Base (MIB) for use with network management
protocols in the Internet community. Using these extensions,
IP-based management stations can manage RADIUS accounting servers.
This memo obsoletes RFC 2621 by deprecating the MIB table containing
IPv4-only address formats and defining a new table to add support for
version-neutral IP address formats. The remaining MIB objects from
RFC 2621 are carried forward into this document. This memo also adds
UNITS and REFERENCE clauses to selected objects.
Table of Contents
1. Introduction ....................................................3
2. Terminology .....................................................3
3. The Internet-Standard Management Framework ......................3
4. Scope of Changes ................................................3
5. Structure of the MIB Module .....................................4
6. Deprecated Objects ..............................................5
7. Definitions .....................................................5
8. Security Considerations ........................................20
9. References .....................................................22
9.1. Normative References ......................................22
9.2. Informative References ....................................22
Appendix A. Acknowledgements ......................................23
1. Introduction
This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
The objects defined within this memo relate to the Remote
Authentication Dial-In User Service (RADIUS) Accounting Server as
defined in RFC 2866 [RFC2866].
2. Terminology
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [RFC2119].
This document uses terminology from RFC 2865 [RFC2865] and RFC 2866
[RFC2866].
This document uses the word "malformed" with respect to RADIUS
packets, particularly in the context of counters of "malformed
packets". While RFC 2866 does not provide an explicit definition of
"malformed", malformed generally means that the implementation has
determined the packet does not match the format defined in RFC 2866.
Those implementations are used in deployments today, and thus set the
de facto definition of "malformed".
3. The Internet-Standard Management Framework
For a detailed overview of the documents that describe the current
Internet-Standard Management Framework, please refer to section 7 of
RFC 3410 [RFC3410].
Managed objects are accessed via a virtual information store, termed
the Management Information Base or MIB. MIB objects are generally
accessed through the Simple Network Management Protocol (SNMP).
Objects in the MIB are defined using the mechanisms defined in the
Structure of Management Information (SMI). This memo specifies a MIB
module that is compliant to the SMIv2, which is described in STD 58,
RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580
[RFC2580].
4. Scope of Changes
This document obsoletes RFC 2621 [RFC2621], RADIUS Accounting Server
MIB, by deprecating the radiusAccClientTable table and adding a new
table, radiusAccClientExtTable, containing
radiusAccClientInetAddressType and radiusAccClientInetAddress. The
purpose of these added MIB objects is to support version-neutral IP
addressing formats. The existing table containing
radiusAccClientAddress is deprecated. The remaining MIB objects from
RFC 2621 are carried forward into this document. This memo also adds
UNITS and REFERENCE clauses to selected objects.
RFC 4001 [RFC4001], which defines the SMI Textual Conventions for
version-neutral IP addresses, contains the following recommendation.
’In particular, when revising a MIB module that contains IPv4
specific tables, it is suggested to define new tables using the
textual conventions defined in this memo [RFC4001] that support all
versions of IP. The status of the new tables SHOULD be "current",
whereas the status of the old IP version specific tables SHOULD be
changed to "deprecated". The other approach, of having multiple
similar tables for different IP versions, is strongly discouraged.’
5. Structure of the MIB Module
The RADIUS accounting protocol, described in RFC 2866 [RFC2866],
distinguishes between the client function and the server function.
In RADIUS accounting, clients send Accounting-Requests, and servers
reply with Accounting-Responses. Typically, Network Access Server
(NAS) devices implement the client function, and thus would be
expected to implement the RADIUS accounting client MIB, while RADIUS
accounting servers implement the server function, 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. The server MIB is defined in this
document, and the client MIB is defined in [RFC4670].
This MIB module contains thirteen scalars as well as a single table,
the RADIUS Accounting Client Table, which contains one row for each
RADIUS accounting client with which the server shares a secret. Each
entry in the RADIUS Accounting Client Table includes twelve columns
presenting a view of the activity of the RADIUS accounting server.
This MIB imports from [RFC2578], [RFC2580], [RFC3411], and [RFC4001].
6. Deprecated Objects
The deprecated table in this MIB is carried forward from RFC 2621
[RFC2621]. There are two conditions under which it MAY be desirable
for managed entities to continue to support the deprecated table:
1. The managed entity only supports IPv4 address formats.
2. The managed entity supports both IPv4 and IPv6 address formats,
and the deprecated table is supported for backwards compatibility
with older management stations. This option SHOULD only be used
when the IP addresses in the new table are in IPv4 format and can
accurately be represented in both the new table and the
deprecated table.
Managed entities SHOULD NOT instantiate row entries in the deprecated
table, containing IPv4-only address objects, when the RADIUS
accounting client address represented in such a table row is not an
IPv4 address. Managed entities SHOULD NOT return inaccurate values
of IP address or SNMP object access errors for IPv4-only address
objects in otherwise populated tables. When row entries exist in
both the deprecated IPv4-only table and the new IP-version-neutral
table that describe the same RADIUS accounting client, the row
indexes SHOULD be the same for the corresponding rows in each table,
to facilitate correlation of these related rows by management
applications.
7. Definitions
RADIUS-ACC-SERVER-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, OBJECT-IDENTITY,
Counter32, Integer32,
IpAddress, TimeTicks, mib-2 FROM SNMPv2-SMI
SnmpAdminString FROM SNMP-FRAMEWORK-MIB
InetAddressType, InetAddress FROM INET-ADDRESS-MIB
MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF;
radiusAccServMIB MODULE-IDENTITY
LAST-UPDATED "200608210000Z" -- 21 August 2006
ORGANIZATION "IETF RADIUS Extensions 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 server
side of the Remote Authentication Dial-In User
Service (RADIUS) accounting protocol. Copyright (C)
The Internet Society (2006). This version of this
MIB module is part of RFC 4671; see the RFC itself
for full legal notices."
REVISION "200608210000Z" -- 21 August 2006
DESCRIPTION
"Revised version as published in RFC 4671. This
version obsoletes that of RFC 2621 by deprecating
the MIB table containing IPv4-only address formats
and defining a new table to add support for version-
neutral IP address formats. The remaining MIB objects
from RFC 2621 are carried forward into this version."
REVISION "199906110000Z" -- 11 Jun 1999
DESCRIPTION "Initial version as published in RFC 2621."
::= { radiusAccounting 1 }
radiusMIB OBJECT-IDENTITY
STATUS current
DESCRIPTION
"The OID assigned to RADIUS MIB work by the IANA."
::= { mib-2 67 }
radiusAccounting OBJECT IDENTIFIER ::= {radiusMIB 2}
radiusAccServMIBObjects OBJECT IDENTIFIER
::= { radiusAccServMIB 1 }
radiusAccServ OBJECT IDENTIFIER
::= { radiusAccServMIBObjects 1 }
radiusAccServIdent OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The implementation identification string for the
RADIUS accounting server software in use on the
system, for example, ’FNS-2.1’."
::= {radiusAccServ 1}
radiusAccServUpTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"If the server has a persistent state (e.g., a
process), this value will be the time elapsed (in
hundredths of a second) since the server process was
started. For software without persistent state, this
value will be zero."
::= {radiusAccServ 2}
radiusAccServResetTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"If the server has a persistent state (e.g., a process)
and supports a ’reset’ operation (e.g., can be told to
re-read configuration files), this value will be the
time elapsed (in hundredths of a second) since the
server was ’reset.’ For software that does not
have persistence or does not support a ’reset’
operation, this value will be zero."
::= {radiusAccServ 3}
radiusAccServConfigReset OBJECT-TYPE
SYNTAX INTEGER { other(1),
reset(2),
initializing(3),
running(4)}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Status/action object to reinitialize any persistent
server state. When set to reset(2), any persistent
server state (such as a process) is reinitialized as
if the server had just been started. This value will
never be returned by a read operation. When read,
one of the following values will be returned:
other(1) - server in some unknown state;
initializing(3) - server (re)initializing;
running(4) - server currently running."
::= {radiusAccServ 4}
radiusAccServTotalRequests OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of packets received on the
accounting port."
REFERENCE "RFC 2866 section 4.1"
::= { radiusAccServ 5 }
radiusAccServTotalInvalidRequests OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS Accounting-Request packets
received from unknown addresses."
REFERENCE "RFC 2866 sections 2, 4.1"
::= { radiusAccServ 6 }
radiusAccServTotalDupRequests OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of duplicate RADIUS Accounting-Request
packets received."
REFERENCE "RFC 2866 section 4.1"
::= { radiusAccServ 7 }
radiusAccServTotalResponses OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS Accounting-Response packets
sent."
REFERENCE "RFC 2866 section 4.2"
::= { radiusAccServ 8 }
radiusAccServTotalMalformedRequests OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of malformed RADIUS Accounting-Request
packets received. Bad authenticators or unknown
types are not included as malformed Access-Requests."
REFERENCE "RFC 2866 section 3"
::= { radiusAccServ 9 }
radiusAccServTotalBadAuthenticators OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS Accounting-Request packets
that contained an invalid authenticator."
REFERENCE "RFC 2866 section 3"
::= { radiusAccServ 10 }
radiusAccServTotalPacketsDropped OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of incoming packets silently discarded
for a reason other than malformed, bad authenticators,
or unknown types."
REFERENCE "RFC 2866 section 3"
::= { radiusAccServ 11 }
radiusAccServTotalNoRecords OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS Accounting-Request packets
that were received and responded to but not
recorded."
::= { radiusAccServ 12 }
radiusAccServTotalUnknownTypes OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS packets of unknown type that
were received."
REFERENCE "RFC 2866 section 4"
::= { radiusAccServ 13 }
radiusAccClientTable OBJECT-TYPE
SYNTAX SEQUENCE OF RadiusAccClientEntry
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"The (conceptual) table listing the RADIUS accounting
clients with which the server shares a secret."
::= { radiusAccServ 14 }
radiusAccClientEntry OBJECT-TYPE
SYNTAX RadiusAccClientEntry
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"An entry (conceptual row) representing a RADIUS
accounting client with which the server shares a
secret."
INDEX { radiusAccClientIndex }
::= { radiusAccClientTable 1 }
RadiusAccClientEntry ::= SEQUENCE {
radiusAccClientIndex Integer32,
radiusAccClientAddress IpAddress,
radiusAccClientID SnmpAdminString,
radiusAccServPacketsDropped Counter32,
radiusAccServRequests Counter32,
radiusAccServDupRequests Counter32,
radiusAccServResponses Counter32,
radiusAccServBadAuthenticators Counter32,
radiusAccServMalformedRequests Counter32,
radiusAccServNoRecords Counter32,
radiusAccServUnknownTypes Counter32
}
radiusAccClientIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"A number uniquely identifying each RADIUS accounting
client with which this server communicates."
::= { radiusAccClientEntry 1 }
radiusAccClientAddress OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"The NAS-IP-Address of the RADIUS accounting client
referred to in this table entry."
::= { radiusAccClientEntry 2 }
radiusAccClientID OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"The NAS-Identifier of the RADIUS accounting client
referred to in this table entry. This is not
necessarily the same as sysName in MIB II."
REFERENCE "RFC 2865 section 5.32"
::= { radiusAccClientEntry 3 }
-- Server Counters
--
-- Requests - DupRequests - BadAuthenticators - MalformedRequests -
-- UnknownTypes - PacketsDropped - Responses = Pending
--
-- Requests - DupRequests - BadAuthenticators - MalformedRequests -
-- UnknownTypes - PacketsDropped - NoRecords = entries logged
radiusAccServPacketsDropped OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"The number of incoming packets received
from this client and silently discarded
for a reason other than malformed, bad
authenticators, or unknown types."
REFERENCE "RFC 2866 section 3"
::= { radiusAccClientEntry 4 }
radiusAccServRequests OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"The number of packets received from this
client on the accounting port."
REFERENCE "RFC 2866 section 4.1"
::= { radiusAccClientEntry 5 }
radiusAccServDupRequests OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"The number of duplicate RADIUS Accounting-Request