Request for Comments: 3621 PowerDsine Inc.
Category: Standards Track D. Romascanu
Avaya
December 2003
Power Ethernet MIB
Status of this Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2003). All Rights Reserved.
Abstract
This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
This document proposes an extension to the Ethernet-like Interfaces
MIB with a set of objects for managing Power Sourcing Equipment
(PSE).
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. The Internet-Standard Management Framework . . . . . . . . . . 2
3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
4. MIB Structure. . . . . . . . . . . . . . . . . . . . . . . . . 3
5. Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . 3
6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 16
7. References . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.1. Normative References . . . . . . . . . . . . . . . . . . 16
7.2. Informative References . . . . . . . . . . . . . . . . . 17
8. Intellectual Property Statement. . . . . . . . . . . . . . . . 17
9. Security Considerations. . . . . . . . . . . . . . . . . . . . 18
10. Authors’ Addresses . . . . . . . . . . . . . . . . . . . . . . 19
11. Full Copyright Statement . . . . . . . . . . . . . . . . . . . 20
1. 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 defines a set of MIB objects to manage Power
Ethernet [IEEE-802.3af] Power Sourcing Equipment (PSE).
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 [RFC2119].
2. 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].
3. Overview
The emergence of IP telephony as an application that allows voice
applications to be run over the same infrastructure as data
applications has led to the emergence of Ethernet IP phones, which
have similar functions and characteristics as traditional phones.
Powering the phone with the same cable used for signal transfer is
one of the functions that are being taken as granted. The IEEE 802.3
Working Group has initiated standardization on this subject,
currently known as the IEEE 802.3af work [IEEE-802.3af].
The IEEE 802.3af WG did not define a full management interface, but
only the hardware registers that will allow for management interfaces
to be built for a powered Ethernet device. The MIB module defined in
this document extends the Ethernet-like Interfaces MIB [RFC3635] with
the management objects required for the management of the powered
Ethernet devices and ports.
The following abbreviations are defined in [IEEE-802.3af] and will be
used with the same significance in this document:
PSE - Power Sourcing Equipment;
PD - Powered Device
4. MIB Structure
These MIB objects are categorized into three MIB groups.
The pethPsePortTable defines the objects used for configuring and
describing the status of ports on a PSE device. Examples of PSE
devices are Ethernet switches that support power Ethernet and mid-
span boxes.
The pethMainPseObjects MIB group defines the management objects for a
managed main power source in a PSE device. Ethernet switches are one
example of boxes that would support these objects.
The pethNotificationControlTable includes objects that control the
transmission of notifications from the agent to a management
application.
5. Definitions
POWER-ETHERNET-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, mib-2, OBJECT-TYPE, Integer32,
Gauge32, Counter32, NOTIFICATION-TYPE
FROM SNMPv2-SMI
TruthValue
FROM SNMPv2-TC
MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP
FROM SNMPv2-CONF
SnmpAdminString
FROM SNMP-FRAMEWORK-MIB;
powerEthernetMIB MODULE-IDENTITY
LAST-UPDATED "200311240000Z" -- November 24, 2003
ORGANIZATION "IETF Ethernet Interfaces and Hub MIB
Working Group"
CONTACT-INFO
"
WG Charter:
http://www.ietf.org/html.charters/hubmib-charter.html
Mailing lists:
General Discussion: hubmib@ietf.org
To Subscribe: hubmib-requests@ietf.org
In Body: subscribe your_email_address
Chair: Dan Romascanu
Avaya
Tel: +972-3-645-8414
Email: dromasca@avaya.com
Editor: Avi Berger
PowerDsine Inc.
Tel: 972-9-7755100 Ext 307
Fax: 972-9-7755120
E-mail: avib@PowerDsine.com
"
DESCRIPTION
"The MIB module for managing Power Source Equipment
(PSE) working according to the IEEE 802.af Powered
Ethernet (DTE Power via MDI) standard.
The following terms are used throughout this
MIB module. For complete formal definitions,
the IEEE 802.3 standards should be consulted
wherever possible:
Group - A recommended, but optional, entity
defined by the IEEE 802.3 management standard,
in order to support a modular numbering scheme.
The classical example allows an implementor to
represent field-replaceable units as groups of
ports, with the port numbering matching the
modular hardware implementation.
Port - This entity identifies the port within the group
for which this entry contains information. The numbering
scheme for ports is implementation specific.
Copyright (c) The Internet Society (2003). This version
of this MIB module is part of RFC 3621; See the RFC
itself for full legal notices."
REVISION "200311240000Z" -- November 24, 2003
DESCRIPTION "Initial version, published as RFC 3621."
::= { mib-2 105 }
pethNotifications OBJECT IDENTIFIER ::= { powerEthernetMIB 0 }
pethObjects OBJECT IDENTIFIER ::= { powerEthernetMIB 1 }
pethConformance OBJECT IDENTIFIER ::= { powerEthernetMIB 2 }
-- PSE Objects
pethPsePortTable OBJECT-TYPE
SYNTAX SEQUENCE OF PethPsePortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of objects that display and control the power
characteristics of power Ethernet ports on a Power Source
Entity (PSE) device. This group will be implemented in
managed power Ethernet switches and mid-span devices.
Values of all read-write objects in this table are
persistent at restart/reboot."
::= { pethObjects 1 }
pethPsePortEntry OBJECT-TYPE
SYNTAX PethPsePortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A set of objects that display and control the power
characteristics of a power Ethernet PSE port."
INDEX { pethPsePortGroupIndex , pethPsePortIndex }
::= { pethPsePortTable 1 }
PethPsePortEntry ::= SEQUENCE {
pethPsePortGroupIndex
Integer32,
pethPsePortIndex
Integer32,
pethPsePortAdminEnable
TruthValue,
pethPsePortPowerPairsControlAbility
TruthValue,
pethPsePortPowerPairs
INTEGER,
pethPsePortDetectionStatus
INTEGER,
pethPsePortPowerPriority
INTEGER,
pethPsePortMPSAbsentCounter
Counter32,
pethPsePortType
SnmpAdminString,
pethPsePortPowerClassifications
INTEGER,
pethPsePortInvalidSignatureCounter
Counter32,
pethPsePortPowerDeniedCounter
Counter32,
pethPsePortOverLoadCounter
Counter32,
pethPsePortShortCounter
Counter32
}
pethPsePortGroupIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This variable uniquely identifies the group
containing the port to which a power Ethernet PSE is
connected. Group means box in the stack, module in a
rack and the value 1 MUST be used for non-modular devices.
Furthermore, the same value MUST be used in this variable,
pethMainPseGroupIndex, and pethNotificationControlGroupIndex
to refer to a given box in a stack or module in the rack."
::= { pethPsePortEntry 1 }
pethPsePortIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This variable uniquely identifies the power Ethernet PSE
port within group pethPsePortGroupIndex to which the
power Ethernet PSE entry is connected."
::= { pethPsePortEntry 2 }
pethPsePortAdminEnable OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"true (1) An interface which can provide the PSE functions.
false(2) The interface will act as it would if it had no PSE
function."
REFERENCE
"IEEE Std 802.3af Section 30.9.1.1.2 aPSEAdminState"
::= { pethPsePortEntry 3 }
pethPsePortPowerPairsControlAbility OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Describes the capability of controlling the power pairs
functionality to switch pins for sourcing power.
The value true indicate that the device has the capability
to control the power pairs. When false the PSE Pinout
Alternative used cannot be controlled through the
PethPsePortAdminEnable attribute."
REFERENCE
"IEEE Std 802.3af Section 30.9.1.1.3
aPSEPowerPairsControlAbility"
::= { pethPsePortEntry 4 }
pethPsePortPowerPairs OBJECT-TYPE
SYNTAX INTEGER {
signal(1),
spare(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Describes or controls the pairs in use. If the value of
pethPsePortPowerPairsControl is true, this object is
writable.
A value of signal(1) means that the signal pairs
only are in use.
A value of spare(2) means that the spare pairs
only are in use."
REFERENCE
"IEEE Std 802.3af Section 30.9.1.1.4 aPSEPowerPairs"
::= { pethPsePortEntry 5 }
pethPsePortDetectionStatus OBJECT-TYPE
SYNTAX INTEGER {
disabled(1),
searching(2),
deliveringPower(3),
fault(4),
test(5),
otherFault(6)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Describes the operational status of the port PD detection.
A value of disabled(1)- indicates that the PSE State diagram
is in the state DISABLED.
A value of deliveringPower(3) - indicates that the PSE State
diagram is in the state POWER_ON for a duration greater than
tlim max (see IEEE Std 802.3af Table 33-5 tlim).
A value of fault(4) - indicates that the PSE State diagram is
in the state TEST_ERROR.
A value of test(5) - indicates that the PSE State diagram is
in the state TEST_MODE.
A value of otherFault(6) - indicates that the PSE State
diagram is in the state IDLE due to the variable
error_conditions.
A value of searching(2)- indicates the PSE State diagram is
in a state other than those listed above."
REFERENCE
"IEEE Std 802.3af Section 30.9.1.1.5
aPSEPowerDetectionStatus"
::= { pethPsePortEntry 6 }
pethPsePortPowerPriority OBJECT-TYPE
SYNTAX INTEGER {
critical(1),
high(2),
low(3)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object controls the priority of the port from the point
of view of a power management algorithm. The priority that
is set by this variable could be used by a control mechanism
that prevents over current situations by disconnecting first
ports with lower power priority. Ports that connect devices
critical to the operation of the network - like the E911
telephones ports - should be set to higher priority."
::= { pethPsePortEntry 7 }
pethPsePortMPSAbsentCounter OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This counter is incremented when the PSE state diagram
transitions directly from the state POWER_ON to the
state IDLE due to tmpdo_timer_done being asserted."
REFERENCE
"IEEE Std 802.3af Section 30.9.1.1.11
aPSEMPSAbsentCounter"
::= { pethPsePortEntry 8 }
pethPsePortType OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"A manager will set the value of this variable to indicate
the type of powered device that is connected to the port.
The default value supplied by the agent if no value has
ever been set should be a zero-length octet string."
::= { pethPsePortEntry 9 }
pethPsePortPowerClassifications OBJECT-TYPE
SYNTAX INTEGER {
class0(1),
class1(2),
class2(3),
class3(4),
class4(5)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Classification is a way to tag different terminals on the
Power over LAN network according to their power consumption.
Devices such as IP telephones, WLAN access points and others,
will be classified according to their power requirements.
The meaning of the classification labels is defined in the
IEEE specification.
This variable is valid only while a PD is being powered,
that is, while the attribute pethPsePortDetectionStatus
is reporting the enumeration deliveringPower."
REFERENCE
"IEEE Std 802.3af Section 30.9.1.1.6
aPSEPowerClassification"
::= { pethPsePortEntry 10 }
pethPsePortInvalidSignatureCounter OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This counter is incremented when the PSE state diagram
enters the state SIGNATURE_INVALID."
REFERENCE
"IEEE Std 802.3af Section 30.9.1.1.7
aPSEInvalidSignatureCounter"
::= { pethPsePortEntry 11 }
pethPsePortPowerDeniedCounter OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This counter is incremented when the PSE state diagram
enters the state POWER_DENIED."
REFERENCE
"IEEE Std 802.3af Section 30.9.1.1.8
aPSEPowerDeniedCounter"
::= { pethPsePortEntry 12 }
pethPsePortOverLoadCounter OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This counter is incremented when the PSE state diagram
enters the state ERROR_DELAY_OVER."
REFERENCE
"IEEE Std 802.3af Section 30.9.1.1.9
aPSEOverLoadCounter"
::= { pethPsePortEntry 13 }
pethPsePortShortCounter OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This counter is incremented when the PSE state diagram
enters the state ERROR_DELAY_SHORT."
REFERENCE
"IEEE Std 802.3af Section 30.9.1.1.10
aPSEShortCounter"
::= { pethPsePortEntry 14 }
-- Main PSE Objects
pethMainPseObjects OBJECT IDENTIFIER ::= { pethObjects 3 }
pethMainPseTable OBJECT-TYPE
SYNTAX SEQUENCE OF PethMainPseEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of objects that display and control attributes
of the main power source in a PSE device. Ethernet
switches are one example of boxes that would support
these objects.
Values of all read-write objects in this table are
persistent at restart/reboot."
::= { pethMainPseObjects 1 }
pethMainPseEntry OBJECT-TYPE
SYNTAX PethMainPseEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A set of objects that display and control the Main
power of a PSE. "
INDEX { pethMainPseGroupIndex }
::= { pethMainPseTable 1 }
PethMainPseEntry ::= SEQUENCE {
pethMainPseGroupIndex
Integer32,
pethMainPsePower
Gauge32 ,
pethMainPseOperStatus
INTEGER,
pethMainPseConsumptionPower
Gauge32,
pethMainPseUsageThreshold
Integer32
}
pethMainPseGroupIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This variable uniquely identifies the group to which
power Ethernet PSE is connected. Group means (box in
the stack, module in a rack) and the value 1 MUST be
used for non-modular devices. Furthermore, the same
value MUST be used in this variable, pethPsePortGroupIndex,
and pethNotificationControlGroupIndex to refer to a
given box in a stack or module in a rack."
::= { pethMainPseEntry 1 }
pethMainPsePower OBJECT-TYPE
SYNTAX Gauge32 (1..65535)
UNITS "Watts"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The nominal power of the PSE expressed in Watts."
::= { pethMainPseEntry 2 }
pethMainPseOperStatus OBJECT-TYPE
SYNTAX INTEGER {
on(1),
off(2),
faulty(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The operational status of the main PSE."
::= { pethMainPseEntry 3 }
pethMainPseConsumptionPower OBJECT-TYPE
SYNTAX Gauge32
UNITS "Watts"
MAX-ACCESS read-only
STATUS current