Media Gateway Control (Megaco) Matt Holdrege
ipVerse
Ilya Akramovich
Lucent Technologies
C. Michael Brown
Nortel Networks
Internet Draft Bala Pitchandi (Editor)
Document: draft-ietf-megaco-mib-04.txt UTStarcom Inc
Expires: April 2003 October 2002
Megaco MIB
Status of this Memo
This document is an Internet-Draft and is in full conformance with all
provisions of Section 10 of RFC2026 [1].
Internet-Drafts are working documents of the Internet Engineering Task Force
(IETF), its areas, and its working groups. Note that other groups may also
distribute working documents as Internet-Drafts.
Internet-Drafts are draft documents valid for a maximum of six months and may
be updated, replaced, or obsoleted by other documents at any time. It is
inappropriate to use Internet-Drafts as reference material or to cite them
other than as "work in progress."
The list of current Internet-Drafts can be accessed at
http://www.ietf.org/ietf/1id-abstracts.txt
The list of Internet-Draft Shadow Directories can be accessed at
http://www.ietf.org/shadow.html.
Abstract
This memo defines a portion of the Management Information Base (MIB) for use
with network management protocols in the Internet community. In particular, it
defines objects for use by the MEGACO/H.248 protocol operating on Media
Gateways and Media Gateway Controllers. These objects can be used to manage the
network containing Media Gateways and Media Gateway Controllers.
This new version of the draft is an entire rework of the old version. Most of
the missing MIB objects have been added to cover all the aspects of the
entities being managed. The number of objects is kept at a minimum to ensure
the easy implementation. For backward compatibility, some of the old objects
are also retained.
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Conventions used in this document
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 [i].
1. Overview
The MEGACO/H.248 protocol [3] [4] defines communication between the elements of
a physically decomposed multimedia gateway. Those elements are the Media
Gateway Controller (MGC) and the Media Gateway (MG). This MIB defines objects
on these elements that are to be used to configure these elements such as
through control of variable settings, to gather and report management
statistics, and to report the occurrence of system management events (i.e.,
traps) to the network management system.
This MIB is defined as per the concepts and specifications of the SNMP
Management Framework, which consists of 5 parts as follows.
. An overall architecture, described in RFC 2571 [5].
. Mechanisms for describing and naming objects and events for the purpose
of management. The first version of this Structure of Management
Information (SMI) is called SMIv1 and described in STD 16, RFC 1155 [6],
STD 16, RFC 1212 [7] and RFC 1215 [8]. The second version, called
SMIv2, is described in STD 58, RFC 2578 [9], STD 58, RFC 2579 [10] and
STD 58, RFC 2580 [11].
. Message protocols for transferring management information. The first
version of the SNMP message protocol is called SNMPv1 and described in
STD 15, RFC 1157 [12]. A second version of the SNMP message protocol,
which is not an Internet standards track protocol, is called SNMPv2c and
described in RFC 1901 [13] and RFC 1905 [14]. The third version of the
message protocol is called SNMPv3 and described in RFC 2570 [15], RFC
2573 [16] and RFC 2575 [17].
. Protocol operations for accessing management information. The first set
of protocol operations and associated PDU formats is described in STD
15, RFC 1157 [12]. A second set of protocol operations and associated
PDU formats is described in RFC 1905 [14].
. A set of fundamental applications described in RFC 2573 [16] and the
view-based access control mechanism described in RFC 2575 [17].
A more detailed introduction to the current SNMP Management Framework can be
found in RFC 2570 [15].
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Managed objects are accessed via a virtual information store, termed the
Management Information Base or MIB. Objects in the MIB are defined using the
mechanisms defined in the SMI.
This memo specifies a MIB module that is compliant to the SMIv2. A MIB
conforming to the SMIv1 can be produced through the appropriate translations.
The resulting translated MIB must be semantically equivalent, except where
objects or events are omitted because no translation is possible (use of
Counter64). Some machine readable information in SMIv2 will be converted into
textual descriptions in SMIv1 during the translation process. However, this
loss of machine readable information is not considered to change the semantics
of the MIB.
2. MIB Definition
--*********************************************************************
-- MEGACO-MIB
-- Media Gateway Control MIB
--
--*********************************************************************
MEGACO-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE,
Counter32,
TimeTicks, Integer32, IpAddress
FROM SNMPv2-SMI
TEXTUAL-CONVENTION,
RowStatus, TestAndIncr, AutonomousType
FROM SNMPv2-TC
MODULE-COMPLIANCE, OBJECT-GROUP,
NOTIFICATION-GROUP
FROM SNMPv2-CONF
SnmpAdminString
FROM SNMP-FRAMEWORK-MIB
InterfaceIndex
FROM IF-MIB;
megacoMib MODULE-IDENTITY
LAST-UPDATED "200209301200Z"
ORGANIZATION "IETF"
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CONTACT-INFO
"
Postal:
Bala Pitchandi
UTStarcom Inc
33 Wood Avenue South
Iselin, NJ 08830
Phone:
+1 (732)452-4457
Email:
bs@utstar.com
"
DESCRIPTION
"Media Gateway Control (Megaco) Management
Information Base (MIB)
"
-- Revision History
REVISION "200209301200Z" -- 30.Sep, 2002
DESCRIPTION
"Reworked the entire MIB to add the missing objects and
eliminate the ambiguities"
REVISION "0003201200Z" -- May, 2001
DESCRIPTION
"Initial Version by Holdridge et al"
::= { mib-2 xx } _ final assignment by IANA at publication time
-- *****************************************************************
--
-- OID For the MIB
--
-- *****************************************************************
mediaGatewayMIBObjects OBJECT IDENTIFIER::= { megacoMib 1 }
-- *****************************************************************
--
-- MEGACO-MIB
--
-- The Media Gateway MIB contains 4 (object) groups
-- medGwyConfiguration
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-- This group consists of all the configuration related information
-- pertained with the Media Gateways and Media Gateway Controllers
-- in the network being managed. This group contains the following
-- three tables:
-- medGwyLinkIdTable - Table used to provide the linkId to create
-- new entries in the gateway table
-- medGwyGatewayConfigTable - Table provides the list of gateways
-- in the network and their configuration
-- medGwyGatewayControllerTable - Table provides the list of media
-- gateway controllers in the network
-- and their configuration
-- medGwyStatistics
-- This group consists of all the statistics related information
-- pertained with the gateways. This group contains the following table:
-- medGwyGatewayStatsTable - Table provides the gateway statistics
-- and related information
--
-- medGwyConnections
-- This group consists of the connections, terminations and their
-- properties related information for the gateways being managed
-- This group contains the following three tables:
-- medGwyTermIdTable - Table used to provide the manager the next
-- available termination Id.
-- medGwyTerminationsTable - Table provides the list of terminations
-- and their configuration & status
-- medGwyPropertyProfileTable - Table provides the list of profiles
-- that are being supported by the
-- gateway
--
-- medGwyProperties
-- For Future Extension
--
--
-- *****************************************************************
-- *****************************************************************
--
-- Group Objects
--
-- *****************************************************************
medGwyConfiguration
OBJECT IDENTIFIER::= { mediaGatewayMIBObjects 1 }
medGwyStatistics
OBJECT IDENTIFIER::= { mediaGatewayMIBObjects 2 }
medGwyConnections
OBJECT IDENTIFIER::= { mediaGatewayMIBObjects 3 }
medGwyProperties
OBJECT IDENTIFIER::= { mediaGatewayMIBObjects 4 }
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-- *****************************************************************
--
-- Textual conventions for the Media Gateway MIB
--
-- *****************************************************************
MediaGatewayId ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"Possible Media Gateway Id that can be used to identify
any media gateway uniquely"
SYNTAX INTEGER (1..2147483647)
-- *****************************************************************
--
-- medGwyLinkIdTable
-- Media Gateway LinkId Table...
--
-- Provides the manager with the nextId for use in creating a
-- LinkId. There is one entry in this table for each MediaGateway.
--
-- Link represents the signalling link between the media gateway
-- and the media gateway controller. The following rules guide
-- the creation of the LinkId
--
-- (1) There could be more than one media gateways (medGwyGatewayId)
-- sharing the same signalling link (medGwyLinkId).
--
-- (2) A gateway may have many links (interfaces) towards the Media
-- Gateway Controller but only the active link that is currently
-- being used to communicate with the controller would be accounted
-- in this table
--
-- If this table isn't implemented, the manager would be
-- responsible for providing the (unique) nextId (via retaining
-- used id's, hashing, etc)
--
-- *****************************************************************
medGwyLinkIdTable OBJECT-TYPE
SYNTAX SEQUENCE OF MedGwyLinkIdEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains a nextLinkId for each Gateway.
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It provides the manager with the nextLinkId for use
in creating new Gateway Table Entries."
::= { medGwyConfiguration 1}
medGwyLinkIdEntry OBJECT-TYPE
SYNTAX MedGwyLinkIdEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains the NextLinkId for this Gateway
and is indexed by mediaGatewayId."
INDEX { medGwyGatewayId }
::= { medGwyLinkIdTable 1 }
MedGwyLinkIdEntry ::= SEQUENCE
{
medGwyNextLinkId TestAndIncr -- rw
}
medGwyNextLinkId OBJECT-TYPE
SYNTAX TestAndIncr
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The Next Value for a MediaGateway LinkId. Assists the
manager in selecting a value for medGwyGatewayLinkId.
Using the TestAndIncr syntax, A Manager will 'lock' this
variable, ensuring single access."
::= { medGwyLinkIdEntry 1 }
-- *****************************************************************
--
-- medGwyGatewayConfigTable
--
-- The Media Gateway Configuration Table...
--
-- There would be one entry in this table and is indexed by
-- (medGwyGatewayId, medGwyGatewayLinkId). The table is guided by
-- the following rules:
--
-- (1) There is one entry in this table for each MediaGateway
-- SignallingLink.
--
-- (2) Even though gateways could share the signalling link, they
-- could have different IP Address and/or Port Number. In order
-- to accomodate that, the table is indexed by both medGwyGatewayId
-- and medGwyGatewayLinkId.
--
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-- (3) Virtual MGs need not have to be represented as a separate entry
-- in this table (Subject for Discussion?)
--
-- *****************************************************************
medGwyGatewayConfigTable OBJECT-TYPE
SYNTAX SEQUENCE OF MedGwyGatewayConfigEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "A list of medGwyGatewayConfigEntry objects."
::= { medGwyConfiguration 2 }
medGwyGatewayConfigEntry OBJECT-TYPE
SYNTAX MedGwyGatewayConfigEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "Entry holding configuration information about a
group of Media Gateway Controllers sharing the same
signaling link."
INDEX { medGwyGatewayId, medGwyGatewayLinkId }
::= { medGwyGatewayConfigTable 1 }
MedGwyGatewayConfigEntry ::= SEQUENCE
{
medGwyGatewayId MediaGatewayId, -- na
medGwyGatewayLinkId Integer32, -- na
medGwyGatewayLinkName OCTET STRING, -- rc
medGwyGatewayIPAddress IpAddress, -- rc
medGwyGatewayPort Integer32, -- rc
medGwyGatewayEncodingScheme INTEGER, -- rc
medGwyGatewayProtocol INTEGER, -- rc
medGwyGatewaySignalingTptProtocol INTEGER, -- rc
medGwyGatewayAdminStatus INTEGER, -- rc
medGwyGatewayOperStatus INTEGER, -- ro
medGwyGatewayLastStatusChange TimeTicks, -- ro
medGwyGatewayResetStatistics INTEGER, -- rc
medGwyGatewayRowStatus RowStatus -- rc
}
medGwyGatewayId OBJECT-TYPE
SYNTAX MediaGatewayId
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "The unique Media Gateway Id which identifies this
media gateway"
::= { medGwyGatewayConfigEntry 1 }
medGwyGatewayLinkId OBJECT-TYPE
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SYNTAX Integer32
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "The unique link id which identifies the signalling
link that this gateway uses to communicate with the
Gateway Controller(s)."
::= { medGwyGatewayConfigEntry 2 }
medGwyGatewayLinkName OBJECT-TYPE
SYNTAX OCTET STRING ( SIZE (0..255) )
MAX-ACCESS read-create
STATUS current
DESCRIPTION "A descriptive name of this signalling link / media
gateway combination"
::= { medGwyGatewayConfigEntry 3 }
medGwyGatewayIPAddress OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-create
STATUS current
DESCRIPTION "The IP address that the Media Gateway Controller
will use to communicate with the Media Gateway.
The value 0.0.0.0 is returned if the entry is
invalid."
::= { medGwyGatewayConfigEntry 4 }
medGwyGatewayPort OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-create
STATUS current
DESCRIPTION "TCP/UDP port number that the Media Gateway Controller will
use to communiacte with the Media Gateway. The value
0 is returned if the entry is invalid."
DEFVAL { 2944 }
::= { medGwyGatewayConfigEntry 5 }
medGwyGatewayEncodingScheme OBJECT-TYPE
SYNTAX INTEGER
{
text (1),
binary (2)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION "The encoding scheme that would be used to encode the Megaco
messages that are sent/received to/from the gateway
controller"
DEFVAL { 1 }
::= { medGwyGatewayConfigEntry 6 }
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medGwyGatewayProtocol OBJECT-TYPE
SYNTAX INTEGER
{
notApplicable(1), --
other (2), -- Other (none from the list below)
dss1-ip (3), -- Q931+
ipdc (4), -- IPDC
megacov1 (5) -- MEGACO/H.248 Version 1
megacov2 (6) -- MEGACO/H.248 Version 2
mgcp (7) -- MGCP
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION "Type of the control protocol in use."
::= { medGwyGatewayConfigEntry 7 }
medGwyGatewaySignalingTptProtocol OBJECT-TYPE
SYNTAX INTEGER
{
TCP (1),
UDP (2),
SCTP (3),
other (4)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION "Type of the transport protocol that is being used to
transport the megaco signalling traffic"
::= { medGwyGatewayConfigEntry 8 }
medGwyGatewayAdminStatus OBJECT-TYPE
SYNTAX INTEGER
{
up (1),
down (2),
testing (3)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION "The desired state of the gateway. The testing(3) state
indicates that no signalling packets can be passed. When
a managed system initializes, all gateways start with
medGwyGatewayAdminStatus in the down(2) state. As a result
of either explicit management action or per configuration
information retained by the managed system,
medGwyGatewayAdminStatus is then changed to either the
up(1) or testing(3) states (or remains in the down(2)
state)."
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::= { medGwyGatewayConfigEntry 9 }
medGwyGatewayOperStatus OBJECT-TYPE
SYNTAX INTEGER
{
up (1), -- ready to communicate with MGC
down (2),
testing(3), -- in some test mode
unknown(4), -- status can not be determined
-- for some reason.
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION "The current operational state of the gateway. The
testing(3) state indicates that no signalling packets can
be passed. If medGwyGatewayAdminStatus is down(2) then
medGwyGatewayOperStatus should be down(2). If
medGwyGatewayAdminStatus is changed to up(1) then
medGwyGatewayOperStatus should change to up(1) if the
gateway is ready to transmit and receive signalling
traffic; it should remain in the down(2) state if and
only if there is a fault that prevents it from going to
the up(1) state"
::= { medGwyGatewayConfigEntry 10 }
medGwyGatewayLastStatusChange OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION "The value of sysUpTime at the time the associated
link entered its current operational status. If
the current status was entered prior to the last
re-initialization of the local network management
subsystem, then this object contains a zero value."
::= { medGwyGatewayConfigEntry 11 }
medGwyGatewayResetStatistics OBJECT-TYPE
SYNTAX INTEGER
{
notApplicable (1), -- Invalid/unknown.
other (2), -- None from the list below.
reset (3) -- Reset all statistics now.
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION "This object can be used to reset all statistics
collected for this media gateway link so far.
Statistics will be reset when the object is SET
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to 'reset'. Upon reset, the agent changes the value
of this object to 'notApplicable'."
::= { medGwyGatewayConfigEntry 12 }
medGwyGatewayRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION "This is used to create new rows in this table,
Modify existing rows, and to delete existing rows."
::= { medGwyGatewayConfigEntry 11 }
-- *****************************************************************
--
-- medGwyGatewayControllerTable
--
-- The Media Gateway Controller Table...
--
-- This table would provide information about the media gateway
-- controllers in the network and their configuration. The rules
-- that guide this table are:
--
-- (1) This table consists a 'List' of Media Gateway Controllers
-- (on a media gateway), and Configuration Information for these
-- Controllers.
--
-- (2) An Entry in this Table is automatically created when a manager
-- creates an entry in the medGwyGatewayConfigTable because even
-- though the same MGC could manage many gateways, they could have
-- different logical IP address/Port number towards each of the
-- gateway
--
-- *****************************************************************
medGwyGatewayControllerTable OBJECT-TYPE
SYNTAX SEQUENCE OF MedGwyGatewayControllerEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "List of the Media Gateway Controllers that are managed
in the network"
::= { medGwyConfiguration 3 }
medGwyGatewayControllerEntry OBJECT-TYPE
SYNTAX MedGwyGatewayControllerEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "Entry holding information about an individual
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Media Gateway Controller."
INDEX { medGwyGatewayId, medGwyGatewayLinkId }
::= { medGwyGatewayControllerTable 1 }
MedGwyGatewayControllerEntry ::= SEQUENCE
{
medGwyGatewayControllerId Integer32, -- ro
medGwyGatewayControllerIPAddress IpAddress, -- rw
medGwyGatewayControllerPort Integer32, -- rw
medGwyGatewayControllerAdminStatus INTEGER -- rw
medGwyGatewayControllerOperStatus INTEGER, -- ro
}
medGwyGatewayControllerId OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "An unique identification number that is assigned to
the gateway controller by the manager"
::= { medGwyGatewayControllerEntry 1 }
medGwyGatewayControllerIPAddress OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-write
STATUS current
DESCRIPTION "The IP address of the Media Gateway Controller. The
value 0.0.0.0 is returned if the entry is invalid."
::= { medGwyGatewayControllerEntry 2 }
medGwyGatewayControllerPort OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-write
STATUS current
DESCRIPTION "TCP port of the Media Gateway Controller. The value
0 is returned if the entry is invalid."
::= { medGwyGatewayControllerEntry 3 }
medGwyGatewayControllerAdminStatus OBJECT-TYPE
SYNTAX INTEGER
{
up (1),
down (2),
testing (3)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION "The desired state of the gateway. The testing(3) state
indicates that no signalling packets can be passed. When
a managed system initializes, all gateways start with
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medGwyGatewayControllerAdminStatus in the down(2) state.
As a result of either explicit management action or per
configuration information retained by the managed system,
medGwyGatewayControllerAdminStatus is then changed to
either the up(1) or testing(3) states (or remains in the
down(2) state)."
::= { medGwyGatewayControllerEntry 4 }
medGwyGatewayControllerOperStatus OBJECT-TYPE
SYNTAX INTEGER
{
up (1), -- Up/active.
down (2), -- Down.
standby (3) -- Standby mode.
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION "The current operational state of the gateway controller.
The standby(3) state indicates that it is in the standby
mode and no signalling packets can be passed. If
medGwyGatewayControllerAdminStatus is down(2) then
medGwyGatewayControllerOperStatus should be down(2). If
medGwyGatewayControllerAdminStatus is changed to up(1) then
medGwyGatewayControllerOperStatus should change to up(1)
if the gateway contoller is ready to transmit and receive
signalling traffic; it should remain in the down(2) state
if and only if there is a fault that prevents it from going
to the up(1) state"
::= { medGwyGatewayControllerEntry 5 }
-- *****************************************************************
--
-- medGwyGatewayStatsTable
--
-- The Media Gateway Stats Table...
--
-- This table provides the control protocol related statistics for
-- the gateways that are being managed in the network. The rules
-- that guide this table are:
--
-- (1) There is one entry in this table for each
-- MediaGateway/SignallingLink.
-- (2) The Agent creates this table, when a GatewayConfigTable
-- Entry is created.
--
-- *****************************************************************
medGwyGatewayStatsTable OBJECT-TYPE
SYNTAX SEQUENCE OF MedGwyGatewayStatsEntry
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MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "A list of mediaGatewayTableEntry objects."
::= { medGwyStatistics 1 }
medGwyGatewayStatsEntry OBJECT-TYPE
SYNTAX MedGwyGatewayStatsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "Entry holding statistics about a group of
media Gateway/signalling link pair
"
INDEX { medGwyGatewayId, medGwyGatewayLinkId }
::= { medGwyGatewayStatsTable 1 }
MedGwyGatewayStatsEntry ::= SEQUENCE
{
medGwyGatewayNumInMessages Counter32, -- ro
medGwyGatewayNumInOctets Counter32, -- ro
medGwyGatewayNumOutMessages Counter32, -- ro
medGwyGatewayNumOutOctets Counter32, -- ro
medGwyGatewayNumErrors Counter32, -- ro
medGwyGatewayNumTimerRecovery Counter32, -- ro
medGwyGatewayTransportNumLosses Counter32, -- ro
medGwyGatewayTransportNumSwitchover Counter32, -- ro
medGwyGatewayTransportTotalNumAlarms Counter32, -- ro
medGwyGatewayTransportLastEvent INTEGER, -- ro
medGwyGatewayTransportLastEventTime TimeTicks, -- ro
medGwyGatewayLastStatisticsReset TimeTicks -- ro
}
medGwyGatewayNumInMessages OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION "Total number of messages received on the link."
::= { medGwyGatewayStatsEntry 1 }
medGwyGatewayNumInOctets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION "Total number of octets received on the link."
::= { medGwyGatewayStatsEntry 2 }
medGwyGatewayNumOutMessages OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
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STATUS current
DESCRIPTION "Total number of messages sent on the link."
::= { medGwyGatewayStatsEntry 3 }
medGwyGatewayNumOutOctets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION "Total number of octets sent on the link."
::= { medGwyGatewayStatsEntry 4 }
medGwyGatewayNumErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION "Total number of signaling-level errors encountered.
Includes, but is not limited to, number of bad
messages received, number of failures to sent a
message and number of other errors."
::= { medGwyGatewayStatsEntry 5 }
medGwyGatewayNumTimerRecovery OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION "Total Number of timer recovery events since the
statistics was last reset. This reflects all protocol
timers that are supported (For Megaco, T - start timer,
S - short timer, L - long timer, and Z - long duration
timer etc)"
::= { medGwyGatewayStatsEntry 6 }
medGwyGatewayTransportNumLosses OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION "Number of times a transport link was lost
(excluding switch-over cases). A link loss is defined
as loss of communication with the entity (MGC) due to
hardware/transient problems in the interface or other
related hardware/software"
::= { medGwyGatewayStatsEntry 7 }
medGwyGatewayTransportNumSwitchover OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION "Number of times when the signaling was switched
over to an alternative link. This includes
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switchover due to the Handoffs initiated by the
gateway controllers"
::= { medGwyGatewayStatsEntry 8 }
medGwyGatewayTransportTotalNumAlarms OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION "Total number of all alarms issued for the transport
layer."
::= { medGwyGatewayStatsEntry 9 }
medGwyGatewayTransportLastEvent OBJECT-TYPE
SYNTAX INTEGER
{
notApplicable (1), -- Invalid/unknown.
other (2), -- None from the list below.
linkUp (3), -- Transport link is up.
linkLoss (4), -- Transport link loss.
persistentError (5), -- No link - persistent error.
linkShutdown (6), -- Link is shut down.
switchOver (7) -- Fail-over.
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION "Last event reported by the transport layer."
::= { medGwyGatewayStatsEntry 10 }
medGwyGatewayTransportLastEventTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-write
STATUS current
DESCRIPTION "The value of sysUpTime at the time when the event
specified by mediaGatewayTransportLastEvent occured.
If the last event occured prior to the last
re-initialization of the local network management
subsystem, then this object contains a zero value."
::= { medGwyGatewayStatsEntry 11 }
medGwyGatewayLastStatisticsReset OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION "The value of sysUpTime at the time when the
statistics were reset. If the reset occured prior to
the last re-initialization of the local network
management subsystem, this object contains a zero
value."
::= { medGwyGatewayStatsEntry 12 }
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-- *****************************************************************
--
-- medGwyTermIdTable
--
-- TerminationId Table...
--
-- This table provides unique TerminationId for the creation of
-- an entry into the TerminationsTable. The following rules guide
-- this table:
--
-- (1) This table provides the manager with the nextId for use in
-- creating a Termination. There is one entry in this table for each
-- MediaGateway.
-- (2) If this table isn't implemented, the manager would be
-- responsible for providing the (unique) nextId (via retaining
-- used id's, hashing, etc)
--
-- *****************************************************************
medGwyTermIdTable OBJECT-TYPE
SYNTAX SEQUENCE OF MedGwyTermIdEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains a nextTerminationId for each
Gateway. It provides the manager with the
nextTerminationId for use in creating a new
TerminationsTable Entry."
::= { medGwyConnections 1}
medGwyTermIdEntry OBJECT-TYPE
SYNTAX MedGwyTermIdEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains a nextTerminationId for each
Gateway, and is indexed by mediaGatewayId."
INDEX { medGwyGatewayId }
::= { medGwyTermIdTable 1 }
MedGwyTermIdEntry ::= SEQUENCE
{
medGwyNextTerminationId TestAndIncr -- rw
}
medGwyNextTerminationId OBJECT-TYPE
SYNTAX TestAndIncr
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MAX-ACCESS read-write
STATUS current
DESCRIPTION "The Next Value for a MediaGateway TerminationId. Assists
the manager in selecting a value for medGwyTerminationId.
Using the TestAndIncr syntax, A Manager will 'lock' this
variable, ensuring single access."
::= { medGwyTermIdEntry 1 }
-- *****************************************************************
--
-- medGwyTerminationsTable
--
-- The Terminations Table...
--
-- This table provides the list of terminations available in the gateway
-- and their corresponding profile information and related configuration
-- information. The following rules guide this table:
--
-- (1) There is one entry in this table for each Termination in a
-- MediaGateway.
-- (2) The list of terminations include terminations that are present
-- for all the contexts that are present in the gateway (excluding
-- the NULL context) (Subject to Discussion)
--
-- *****************************************************************
medGwyTerminationsTable OBJECT-TYPE
SYNTAX SEQUENCE OF MedGwyTerminationsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains information about terminations
in a media gateway. It is a list of terminations.
The number of entries equals to the total number of
terminations for all contexts in a gateway."
::= { medGwyConnections 2}
medGwyTerminationsEntry OBJECT-TYPE
SYNTAX MedGwyTerminationsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "
It contains objects that describe a termination.
"
INDEX { medGwyGatewayId, medGwyTerminationId }
::= { medGwyTerminationsTable 1 }
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MedGwyTerminationsEntry ::= SEQUENCE
{
medGwyTerminationId Integer32, -- na
medGwyTerminationName SnmpAdminString, -- rc
medGwyTerminationAdminStatus INTEGER, -- rw
medGwyTerminationOperStatus INTEGER, -- rc
medGwyTerminationInterfaceIdentifier Integer32, -- rc
medGwyTerminationPropertyProfileId Integer32, -- rc
medGwyTerminationRowStatus RowStatus -- rc
}
medGwyTerminationId OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "An unique identification number that is assigned to
the termination by a media gateway. This is the
TerminationId that would be used in the protocol
messages that are sent from the gateway"
::= { medGwyTerminationsEntry 1 }
medGwyTerminationName OBJECT-TYPE
SYNTAX SnmpAdminString ( SIZE (0..64) )
MAX-ACCESS read-create
STATUS current
DESCRIPTION "A descriptive name that would describe this termination
and its use. For example, 'emergency-ds0-1' indicating
that this termination is reserved as an emergencey DS0
channel"
::= { medGwyTerminationsEntry 2 }
medGwyTerminationAdminStatus OBJECT-TYPE
SYNTAX INTEGER
{
in-Service (1),
out-Of-Service(2),
testing (3)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION "The desired state of the termination. The testing(3) state
indicates that no connections can be created for this
termination. When a managed system initializes, all
terminations start with medGwyTerminationAdminStatus in the
out-of-service(2) state. As a result of either
explicit management action or per configuration information
retained by the managed system,
medGwyTerminationAdminStatus is then changed to either the
in-Service(1) or testing(3) states (or remains in the
out-Of-Service(2) state)."
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::= { medGwyTerminationsEntry 3 }
medGwyTerminationOperStatus OBJECT-TYPE
SYNTAX INTEGER
{
up (1),
down (2),
testing (3)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION "The current operational state of the termination.
The testing(3) state indicates that it is in the testing
mode and no connections can be created on it. If
medGwyTerminationAdminStatus is out-of-service(2) then
medGwyTerminationOperStatus should be down(2). If
medGwyTerminationAdminStatus is changed to up(1) then
medGwyTerminationOperStatus should change to up(1) if the
termination is ready to accept connections; it should
remain in the down(2) state if and only if there is a fault
that prevents it from going to the up(1) state"
::= { medGwyTerminationsEntry 4 }
medGwyTerminationInterfaceIdentifier OBJECT-TYPE
SYNTAX InterfaceIndex
MAX-ACCESS read-create
STATUS current
DESCRIPTION "A number that uniquely identifies the interface in
the physical gateway. This is the ifIndex in the ifTable,
that this termination would be using to communicate to
other gateways"
::= { medGwyTerminationsEntry 5 }
medGwyTerminationPropertyProfileId OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-create
STATUS current
DESCRIPTION "This determines the profile of the termination which
determines what kind of capabilities this termination has.
This is an index into the medGwyPropertyProfileTable
which identifies all the profile that are available"
::= { medGwyTerminationsEntry 6 }
medGwyTerminationRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION "This is used to create new rows in this table,
Modify existing rows, and to delete existing rows."
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::= { medGwyTerminationsEntry 7 }
-- *****************************************************************
--
-- medGwyPropertyProfileTable
--
-- The Media Gateway Property Profile Table...
--
-- This table describes different profiles and the properties supported
-- by each profile. The rules that guide this table are:
--
-- (1) There are 'N' entries for each Gateway-PropertyProfile
-- (2) Each entry is a supported property, thus this table gives a list
-- of supported properties for each specified Profile.
-- (3) Each Property is defined as an Object Identifer in the various
-- Package Mibs (like MEGACO-TONES-MIB etc).
-- (4) That OID is used to identify the particular Package, and if the
-- Termination supports the property, this Package OID is included
-- in its list.
-- (5) Terminations (in the TerminationsTable) will have a
-- PropertyProfileId that indicates which PropertyProfile this
-- Termination supports.
-- (6) A Manager builds a Profile of properties, then ties each
-- termination to a defined profile, via the PropertyProfileId
-- (7) Vendors are encouraged to come up with different profiles
-- for different scenarios in order to ensure inter-operability
-- among different implementations
--
-- *****************************************************************
medGwyPropertyProfileTable OBJECT-TYPE
SYNTAX SEQUENCE OF MedGwyPropertyProfileEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains a list of the properties
supported in a Profile. A Manager builds a Profile
of properties, then ties each termination to a
defined profile"
::= { medGwyConnections 3}
medGwyPropertyProfileEntry OBJECT-TYPE
SYNTAX MedGwyPropertyProfileEntry
MAX-ACCESS not-accessible
STATUS current
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DESCRIPTION "
Each row represents a default property of the
Property Profile N-entries per
mediaGatewayId/PropertyId, one entry per property."
INDEX { medGwyGatewayId, medGwyPropertyProfileId,
medGwyPropertyProfileIndex }
::= { medGwyPropertyProfileTable 1 }
MedGwyPropertyProfileEntry ::= SEQUENCE
{
medGwyPropertyProfileId Integer32, -- na
medGwyPropertyProfileIndex Integer32, -- na
medGwyPropertyProfileProperty AutonomousType, -- rc
medGwyTermPropertyProfileStatus RowStatus -- rc
}
medGwyPropertyProfileId OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "This PropertyProfile Identifier uniquelyidentifies this
set of properties. This is the value each termination
would refer, when they would like to support all the
properties in this profile"
::= { medGwyPropertyProfileEntry 1 }
medGwyPropertyProfileIndex OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "This is the index to the PropertyProfile This is just
a 'counter' through the medGwyPropertyProfile Table.
ie, property=1 property=2 etc."
::= { medGwyPropertyProfileEntry 2 }
medGwyPropertyProfileProperty OBJECT-TYPE
SYNTAX AutonomousType
MAX-ACCESS read-create
STATUS current
DESCRIPTION "The Property supported by this Profile.
This is an Object ID (OID) defined in a package MIB
to identify a Particular property (such as AnalogLines,
Tones etc)."
::= { medGwyPropertyProfileEntry 3 }
medGwyTermPropertyProfileStatus OBJECT-TYPE
SYNTAX RowStatus
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MAX-ACCESS read-create
STATUS current
DESCRIPTION
"used to create new rows in this table, modify
existing rows, and to delete existing rows."
::= { medGwyPropertyProfileEntry 4 }
-- *****************************************************************
--
-- MEGACO-MIB Notification Definitions
--
-- There are seven traps currently supported by the MEGACO-MIB. They are
--
-- o medGwyLinkStatusChange
-- This trap is sent whenever there is a change in the link status
-- that the media gateway is communicating
--
-- o medGwyInvalidControllerAddress
-- This trap is sent whenever a gateway receives a protocol message
-- from a controller that was not present in the configured list
-- of media gateway controllers
--
-- o meGwyInvalidTerminationId
-- This trap is sent whenever a gateway receives a protocol message
-- for a termination that is not recognized by the gateway
--
-- o medGwyInvalidPackageElement
-- This trap is sent whenever a gateway receives an invalid
-- event/signal or any other descriptor for the package specified
-- along with it.
--
-- o medGwyTerminationStatusChange
-- This trap is sent whenever the status of the termination
-- changes from in-Service to out-of-Service or to testing.
--
-- o medGwyGatewayHandoff
-- This trap is sent whenever there is a handoff (due to a failure of
-- the MGC or enforced by the MGC) in a gateway
--
-- o medGwyProtocolError
-- This trap is sent whenever there is a protocol error detected
-- in the messages that the gateway receives from the gateway
-- controllers that are configured
--
-- *****************************************************************
mediaGatewayMIBNotifications
OBJECT IDENTIFIER ::= { megacoMib 2 }
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medGwyNotifPrefix
OBJECT IDENTIFIER ::= { mediaGatewayMIBNotifications 0 }
medGwyNotifObjects
OBJECT IDENTIFIER ::= { mediaGatewayMIBNotifications 1 }
--
-- Objects necessary for these Notifications
--
medGwyReceivedElement OBJECT-TYPE
SYNTAX OCTET STRING ( SIZE (0..255) )
MAX-ACCESS accessible-for-notify
STATUS current
DESCRIPTION "The element name received in a megaco message. For
example, 'eventDescriptor' is one such element that
could be sent with the notifications"
::= { medGwyNotifObjects 1 }
medGwyLinkStatusChange NOTIFICATION-TYPE
OBJECTS {
medGwyGatewayLinkName,
medGwyGatewayOperStatus
}
STATUS current
DESCRIPTION "This notification indicates that operational status
of a media gateway control link has changed."
::= { medGwyNotifPrefix 1}
medGwyInvalidControllerAddress NOTIFICATION-TYPE
OBJECTS {
medGwyGatewayControllerIPAddress
}
STATUS current
DESCRIPTION "This notification indicates that a message was received
from a controller that did not match any of the valid
controller IPAddress-es configured in
medGwyGatewayControllerTable"
::= { medGwyNotifPrefix 2 }
medGwyInvalidTerminationId NOTIFICATION-TYPE
OBJECTS {
medGwyTerminationId
}
STATUS current
DESCRIPTION "This notification indicates that a message was received
from a controller that contained a TerminationId that did
not match any TerminationId in the TerminationsTable.
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Megaco MIB October 2002
TerminationId is found in the OID of the
medGwyTerminationName Object."
::= { medGwyNotifPrefix 3 }
medGwyInvalidPackageElement NOTIFICATION-TYPE
OBJECTS {
medGwyReceivedElement
}
STATUS current
DESCRIPTION "This notification indicates that a message was received
from a controller that contained an event, signal,
or descriptor that was not recognized for the
package."
::= { medGwyNotifPrefix 4 }
medGwyTerminationStatusChange NOTIFICATION-TYPE
OBJECTS {
medGwyTerminationStatus,
medGwyTerminationTestStatus
}
STATUS current
DESCRIPTION "This notification is sent when a termination changes
status."
::= { medGwyNotifPrefix 5 }
medGwyGatewayHandoff NOTIFICATION-TYPE
OBJECTS {
medGwyGatewayId,
medGwyGatewayControllerId
}
STATUS current
DESCRIPTION "This notification is sent when a gateway is handed off
to a different gateway controller either due to a apparent
MGC failure or due to a MGC-enforced condition"
::= { medGwyNotifPrefix 6 }
medGwyProtocolError NOTIFICATION-TYPE
OBJECTS {
medGwyTerminationId
}
STATUS current
DESCRIPTION "This notification is sent when a protocol error is detected
in the messages received from the 'configured' gateway
controllers"
::= { medGwyNotifPrefix 7 }
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-- *****************************************************************
--
-- Conformance for the MEGACO-MIB
--
-- This object group provides list of groups to be conformed when
-- managing different types of gateways, gateway controllers individually
-- and both simultaneously from one single management entity.
--
-- *****************************************************************
mediaGatewayConformance OBJECT IDENTIFIER ::= { megacoMib 3 }
-- *****************************************************************
--
-- Conformance Object Groups
--
-- There are two object groups
--
-- medGwyCompliances
-- This group includes all the compliance statements (both mandatory
-- and optional statements.
--
-- medGwyConfGroups
-- This group includes all the different groups that form the compliance
-- statements
--
-- *****************************************************************
medGwyCompliances
OBJECT IDENTIFIER ::= { mediaGatewayConformance 1 }
medGwyConfGroups
OBJECT IDENTIFIER ::= { mediaGatewayConformance 2 }
-- Compliance
medGwyCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Compliance statement for entities which implement
the MEGACO-MIB.
"
MODULE -- this module
MANDATORY-GROUPS
{
medGwyConfigGroup,
medGwyStatsGroup,
}
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GROUP medGwyGWControllerGroup
DESCRIPTION
"This group is mandatory for all Systems that are gateway
controllers and are being managed over a distributed
environment"
GROUP medGwyNextIdGroup
DESCRIPTION
"This group is not mandatory for all the agent implementations.
But if this group is not implemented, then the manager is
responsible for uniquely determining the nextId to be used
in various listed objects."
GROUP medGwyNotificationsGroup
DESCRIPTION
"This group is mandatory for all the implementations, which .
are fault tolerant. This group contains all the notifications"
::= { medGwyCompliances 1 }
-- Units of Conformance
medGwyConfigGroup OBJECT-GROUP
OBJECTS
{
medGwyGatewayLinkName,
medGwyGatewayIPAddress,
medGwyGatewayPort,
medGwyGatewayEncodingScheme,
medGwyGatewayProtocol,
medGwyGatewaySignalingTptProtocol,
medGwyGatewayAdminStatus,
medGwyGatewayOperStatus,
medGwyGatewayLastStatusChange,
medGwyGatewayResetStatistics
}
STATUS current
DESCRIPTION
"This group contains of all the configuration Information for a
Media Gateway. This group is mandatory for any implementation
managing a media gateway or a group of media gateways"
::= { medGwyConfGroups 1 }
medGwyStatsGroup OBJECT-GROUP
OBJECTS
{
medGwyGatewayNumInMessages,
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medGwyGatewayNumInOctets,
medGwyGatewayNumOutMessages,
medGwyGatewayNumOutOctets,
medGwyGatewayNumErrors,
medGwyGatewayNumTimerRecovery,
medGwyGatewayTransportNumLosses,
medGwyGatewayTransportNumSwitchover,
medGwyGatewayTransportTotalNumAlarms,
medGwyGatewayTransportLastEvent,
medGwyGatewayTransportLastEventTime,
medGwyGatewayLastStatisticsReset
}
STATUS current
DESCRIPTION
"This group contains of all the statistics Information for a
Media Gateway. This group is mandatory for any implementation
managing a media gateway or a group of media gateways"
::= { medGwyConfGroups 2 }
medGwyGWControllerGroup OBJECT-GROUP
OBJECTS
{
medGwyGatewayControllerIPAddress,
medGwyGatewayControllerPort,
medGwyGatewayControllerAdminStatus,
medGwyGatewayControllerOperStatus
}
STATUS current
DESCRIPTION
"This group contains of all the configuration Information for a
Media Gateway Controller. This group is mandatory for any
implementation managing a media gateway controller or a group of
media gateway controllers. It is also mandatory for implementations
managing media gateway(s)"
::= { medGwyConfGroups 3 }
medGwyNextIdGroup OBJECT-GROUP
OBJECTS
{
medGwyNextTerminationId,
medGwyNextLinkId
}
STATUS current
DESCRIPTION
"Agent provides NextId's to the Manager to assist in selecting
and creating new table entries. This group is optional for
all the implementations. But when it is not implemented, it is
the manager's responsibility to uniquely determine these ids"
::= { medGwyConfGroups 4 }
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medGwyNotificationsGroup NOTIFICATION-GROUP
NOTIFICATIONS
{
medGwyLinkStatusChange,
medGwyInvalidControllerAddress,
medGwyInvalidTerminationId,
medGwyInvalidPackageElement,
medGwyTerminationStatusChange,
medGwyGatewayHandoff,
medGwyProtocolError
}
STATUS current
DESCRIPTION
"This group contains notifications that an entity implementing
the Media Gateway(s) will send. This group is mandatory for
all implementations that are managing a media gateway or a group
of media gateways"
::= { medGwyConfGroups 5 }
END
3. Security Considerations
In order to implement this MIB, a probe must capture all packets on the
ocally-attached network, including packets between third parties. These
packets are analyzed to collect network addresses, protocol usage information,
and conversation statistics. Data of this nature may be considered sensitive
in some environments. In such environments the administrator may wish to
restrict SNMP access to the probe.
This MIB also includes functions for returning the contents of captured
packets, potentially including sensitive user data or passwords. It is
recommended that SNMP access to these functions be restricted.
There are a number of management objects defined in this MIB that have a
MAX-ACCESS clause of read-write and/or read-create. Such objects may be
considered sensitive or vulnerable in some network environments. The support
for SET operations in a non-secure environment without proper protection can
have a negative effect on network operations.
SNMPv1 by itself is not a secure environment. Even if the network itself is
secure (for example by using IPSec), even then, there is no control as to who
on the secure network is allowed to access and GET/SET
(read/change/create/delete) the objects in this MIB.
It is recommended that the implementors consider the security features as
provided by the SNMPv3 framework. Specifically, the use of the User-based
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Megaco MIB October 2002
Security Model RFC 2574 [18] and the View- based Access Control Model RFC 2575
[17] is recommended.
It is then a customer/user responsibility to ensure that the SNMP entity giving
access to an instance of this MIB, is properly configured to give access to the
objects only to those principals (users) that have legitimate rights to indeed
GET or SET change/create/delete) them.
References
[1] Bradner, S., "The Internet Standards Process -- Revision 3", BCP
9, RFC 2026, October 1996
[2] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels",
BCP 14, RFC 2119, March 1997
[3] Cuervo, F., Greene, N., Rayhan, A., Rosen, B., Segers, J., "Megaco Protocol
Version 1.0", RFC 3015, November 2000
[4] ITU-T Recommendation H.248 (06/2000), "Gateway Control Protocol".
[5] Harrington, D., Presuhn, R. and B. Wijnen, "An Architecture for Describing
SNMP Management Frameworks", RFC 2571, April 1999.
[6] Rose, M. and K. McCloghrie, "Structure and Identification of Management
Information for TCP/IP-based Internets", STD 16, RFC 1155, May 1990.
[7] Rose, M. and K. McCloghrie, "Concise MIB Definitions", STD 16, RFC 1212,
March 1991.
[8] Rose, M., "A Convention for Defining Traps for use with the SNMP", RFC
1215, March 1991.
[9] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose, M. and S.
Waldbusser, "Structure of Management Information Version 2 (SMIv2)", STD
58, RFC 2578, April 1999.
[10] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose, M. and S.
Waldbusser, "Textual Conventions for SMIv2", STD 58, RFC 2579, April 1999.
[11] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose, M. and S.
Waldbusser, "Conformance Statements for SMIv2", STD 58, RFC 2580, April
1999.
[12] Case, J., Fedor, M., Schoffstall, M. and J. Davin, "Simple Network
Management Protocol", STD 15, RFC 1157, May 1990.
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Megaco MIB October 2002
[13] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser, "Introduction to
Community-based SNMPv2", RFC 1901,
[14] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser, "Protocol Operations
for Version 2 of the Simple Network Management Protocol (SNMPv2)", RFC
1905, January 1996.
[15] Case, J., Mundy, R., Partain, D. and B. Stewart, "Introduction to Version
3 of the Internet-standard Network Management Framework", RFC 2570, April
1999.
[16] Levi, D., Meyer, P. and B. Stewart, "SNMPv3 Applications", RFC 2573, April
1999.
[17] Wijnen, B., Presuhn, R. and K. McCloghrie, "View-based Access Control
Model (VACM) for the Simple Network Management Protocol (SNMP)", RFC 2575,
April 1999.
[18] Blumenthal, U., and B. Wijnen, "User-based Security Model (USM) for
version 3 of the Simple Network Management Protocol (SNMPv3)", RFC
2574, April 1999.
Acknowledgments
The authors would like to acknowledge the significant contributions to this
draft by Pratima Shah (AGCS), Irina Suconick (Videoserver), Brian Rosen
(Marconi), Rod Miller (Nortel Networks), and Thomas Stone (Jetstream).
Author's Addresses
Matt Holdrege
Sonus Networks
5 Carlisle Road
Westford MA 01886
+1 978 392 8100
Email: matt.holdrege@verizon.net
Ilya Akramovich
Lucent Technologies
1701 Harbor Bay Parkway
Alameda, CA USA 94502
Phone: (510) 769-6001
Email: ilya@ascend.com
C. Michael Brown
Email: cmbrown@mindspring.com
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Bala Pitchandi
UTStarcom Inc
33 Wood Avenue South
Iselin, NJ USA 08830
Phone: (732) 452 4457
Email: bs@utstar.com
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