Internet Draft C. DeSanti
H.K. Vivek
K. McCloghrie
Cisco Systems
S. Gai
5 March 2006
Fibre Channel Registered State Change Notification (RSCN) MIB
Status of this Memo
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Copyright notice
Copyright(C) The Internet Society (2006). 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.
In particular, it describes managed objects for information related
to the management of Fibre Channel's Registered State Change
Notifications (RSCNs).
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Table of Contents
1 Introduction ................................................. 3
1.1 Log of Recent Changes ...................................... 3
2 The Internet-Standard Management Framework ................... 4
3 Short Overview of Fibre Channel .............................. 4
4 Relationship to Other MIBs ................................... 6
5 MIB Overview ................................................. 6
5.1 Fibre Channel management instance .......................... 6
5.2 Switch Index ............................................... 7
5.3 Fabric Index ............................................... 7
5.4 The t11FcRscnRegistrationGroup group ....................... 7
5.5 The t11FcRscnNotifyGroup group ............................. 7
5.6 The t11FcRscnNotifyControlGroup group ...................... 8
5.7 The t11FcRscnStatsGroup group .............................. 8
6 Definitions .................................................. 9
6.1 The T11-FC-RSCN-MIB Module ................................. 9
7 Intellectual Property ........................................ 25
8 Acknowledgements ............................................. 25
9 Normative References ......................................... 25
10 Informative References ...................................... 26
11 IANA Considerations ......................................... 27
12 Security Considerations ..................................... 27
13 Authors' Addresses .......................................... 28
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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 describes managed objects for information related
to Registered State Change Notifications (RSCNs) [FC-LS] in a Fibre
Channel network, including which Nx_Ports are registered to receive
which types of RSCNs, the control and generation of SNMP
notifications on registration failures, and RSCN-related statistics.
1.1. Log of Recent Changes
This section to be deleted when the document becomes approved.
1.1.1. Initial version
The initial version was submitted to T11.5 as T11/05-787v0 on 18
November 2005.
1.1.2. 6 December 2005 version
The following changes were made for the version was submitted to
T11.5 as T11/05-787v1 and the IETF as:
draft-ietf-imss-fc-rscn-mib-01.txt.
- added many clarifications, fixed typos, and finished previously-
incomplete sections.
- fixed compile errors in the MIB module.
1.1.3. 17 December 2005 version
The following changes were made for the version was submitted to
T11.5 as T11/05-787v2 and the IETF as:
draft-ietf-imss-fc-rscn-mib-02.txt.
- Replaced the one (aggregated) object t11FcRscnRejectedReasonCode by
the three separate objects for Reject Reason Code, Reason Code
Explanation and Reason Vendor Specific Code.
- Changed the reference for definitions of RSCN and SCR to be FC-LS
(instead of FC-FS).
- Added URLs for T11 specifications in the Reference section.
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1.1.4. 5 March 2006 version
The following changes were made for the version was submitted to
T11.5 as T11/06-198v0 and the IETF as:
draft-ietf-imss-fc-rscn-mib-03.txt.
- Explained the term "SW_RSCN" on the first usage of the phrase "an
SW_ILS with a SW_RSCN payload", and replaced all subsequent uses of
the phrase by SW_RSCN.
- Changed "Rx" to "In" and "Tx" to "Out" in the descriptors of
Counter32's, e.g., changed t11FcRscnRxRscns to t11FcRscnInRscns.
- Added ten counters for the number of sent/received RSCNs for the
individual 'Event Qualifier' values defined in [FC-LS].
- Many editorial changes.
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. Short Overview of Fibre Channel
The Fibre Channel (FC) is logically a bidirectional point-to-point
serial data channel, structured for high performance. Fibre Channel
provides a general transport vehicle for higher level protocols such
as Small Computer System Interface (SCSI) command sets, the High-
Performance Parallel Interface (HIPPI) data framing, IP (Internet
Protocol), IEEE 802.2, and others.
Physically, Fibre Channel is an interconnection of multiple
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communication points, called N_Ports, interconnected either by a
switching network, called a Fabric, or by a point-to-point link. A
Fibre Channel "node" consists of one or more N_Ports. A Fabric may
consist of multiple Interconnect Elements, some of which are
switches. An N_Port connects to the Fabric via a port on a switch
called an F_Port. When multiple FC nodes are connected to a single
port on a switch via an "Arbitrated Loop" topology, the switch port
is called an FL_Port, and the nodes' ports are called NL_Ports. The
term Nx_Port is used to refer to either an N_Port or an NL_Port. The
term Fx_Port is used to refer to either an F_Port or an FL_Port. A
switch port, which is interconnected to another switch port via an
Inter Element Link (IEL), is called an E_Port. A B_Port connects a
bridge device with an E_Port on a switch; a B_Port provides a subset
of E_Port functionality.
Many Fibre Channel components, including the fabric, each node, and
most ports, have globally-unique names. These globally-unique names
are typically formatted as World Wide Names (WWNs). More information
on WWNs can be found in [FC-FS]. WWNs are expected to be persistent
across agent and unit resets.
Fibre Channel frames contain 24-bit address identifiers which
identify the frame's source and destination ports. Each FC port has
both an address identifier and a WWN. When a fabric is in use, the
FC address identifiers are dynamically assigned by a switch. Each
octet of a 24-bit address represents a level in an address hierarchy,
with a Domain_ID being the highest level of the hierarchy.
Registered State Change Notifications (RSCNs) are defined in [FC-LS]
as a means to provide Nx_Ports which have registered to receive such
notifications, with a timely indication of changes in the state of
nodes attached to the fabric. Specifically, an Nx_Port may choose to
register, using an State Change Registration (SCR) request [FC-LS] to
receive RSCNs. A Nx_Port which has registered will receive an RSCN
when an event occurs which may affect the registered port's state.
For example, an Nx_Port can use RSCNs as the means by which it is
informed of the failures of other nodes, of new devices coming
online, or even of more network-accessible storage becoming
available. The payload of the RSCN indicates the type of change and
includes the address of the changed port. RSCNs are often generated
by the fabric, but an Nx_Port can also generate (and send to the
fabric) an RSCN if and when it detects an event not visible to the
fabric. The sender of an RSCN may coalesce several events into a
single RSCN message. Each RSCN is a "request" which is acknowledged
by the receiver with an accept or reject.
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An RSCN is received by an Nx_Port from the Fabric as an Extended Link
Service (ELS) request [FC-LS]. The Fabric distributes RSCNs between
Switches using an SW_ILS frame with an Inter-Switch RSCN payload,
also known as an SW_RSCN [FC-SW-4]. So, when a Switch has directly
attached Nx_Ports which have registered to receive RSCNs, it converts
received SW_RSCNs (i.e., SW_ILS frames containing SW_RSCN payloads)
into ELS requests containing the corresponding RSCN which it sends to
each such Nx_Port.
4. Relationship to Other MIBs
The first standardized MIB for Fibre Channel [RFC2837] was focused on
Fibre Channel switches. It was replaced by the more generic Fibre
Channel Management MIB [FC-MGMT] which defines basic information for
Fibre Channel hosts and switches, including extensions to the
standard IF-MIB [IF-MIB] for Fibre Channel interfaces. [FC-MGMT]
includes the specification of how the generic objects defined in [IF-
MIB] apply to Fibre Channel interfaces.
Note that an interface's ifIndex value must be unique within an SNMP
context, irrespective of how many Fibre Channel management instances
(see below) and how many Fibre Channel switches are instrumented
within that SNMP context.
This MIB imports some common Textual Conventions defined in the
T11-TC-MIB [FC-FAM-MIB] and in the T11-FC-NAME-SERVER-MIB [FC-NS-
MIB].
5. MIB Overview
This section explains the use of a Fibre Channel management instance,
a Switch Index, and a Fabric Index. It also describes the four MIB
groups contained in the MIB.
5.1. Fibre Channel management instance
A Fibre Channel management instance is defined in [FC-MGMT] as a
separable managed instance of Fibre Channel functionality. Fibre
Channel functionality may be grouped into Fibre Channel management
instances in whatever way is most convenient for the
implementation(s). For example, one such grouping accommodates a
single SNMP agent having multiple AgentX [RFC2741] sub-agents, with
each sub-agent implementing a different Fibre Channel management
instance.
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The object, fcmInstanceIndex, is IMPORTed from the FC-MGMT-MIB
[FC-MGMT] as the index value to uniquely identify each Fibre Channel
management instance within the same SNMP context ([RFC3411] section
3.3.1).
5.2. Switch Index
The FC-MGMT-MIB [FC-MGMT] defines the fcmSwitchTable as a table of
information about Fibre Channel switches which are managed by Fibre
Channel management instances. Each Fibre Channel management instance
can manage one or more Fibre Channel switches. The Switch Index,
fcmSwitchIndex, is IMPORTed from the FC-MGMT-MIB as the index value
to uniquely identify a Fibre Channel switch amongst those (one or
more) managed by the same Fibre Channel management instance.
5.3. Fabric Index
The latest standard for an interconnecting Fabric containing multiple
Fabric Switch elements is [FC-SW-4]; it specifies the operation of
both a single Fabric in a physical infrastructure, as well as the
support of multiple Virtual Fabrics operating within one (or more)
physical infrastructures. Whether operating on a physical Fabric
(i.e., without Virtual Fabrics) or within a Virtual Fabric, the
manner of operation of RSCNs within a/each Fabric is identical.
Therefore, this MIB defines all Fabric-related information in tables
which are INDEX-ed by an arbitrary integer, named a "Fabric Index",
the syntax of which is IMPORTed from the T11-TC-MIB [FC-FAM-MIB].
When a device is connected to a single physical Fabric, without use
of any virtual Fabrics, the value of this Fabric Index will always be
1. In an environment of multiple virtual and/or physical Fabrics,
this index provides a means to distinguish one Fabric from another.
5.4. The t11FcRscnRegistrationGroup group
This group contains information about the Nx_Ports which have
registered to receive RSCNs.
5.5. The t11FcRscnNotifyGroup group
This group contains two notifications: one generated by when a switch
rejects a SCR or RSCN; the other when a switch rejects a SW_RSCN.
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5.6. The t11FcRscnNotifyControlGroup group
This group contains one object for each notification in the
t11FcRscnNotifyGroup group to enable/disable that notification, as
well as three objects which record information about the latest
rejection of an SCR, RSCN or SW_RSCN, specifically, the content (if
available) of the rejected request, the source of the rejected
request, and the reason for the rejection.
5.7. The t11FcRscnStatsGroup group
This group contains RSCN-related statistics. Two levels of
statistics are included:
1) counters at the message-type level, for:
- the number of SCRs received/rejected,
- the number of RSCNs sent/received/rejected,
- the number of SW_RSCNs sent/received/rejected.
2) counters for each different category of sent/received RSCNs,
where different categories are indicated by different values of
the 'Event Qualifier' contained in an RSCN message. Note that
if and when several RSCN events are coalesced into a single RSCN
message, then that message may be counted in more than one of
these counters. No counters are defined in this MIB for the
'Event Qualifier' value of '0001'b (meaning "Changed Name Server
Object") because these types of RSCNs are counted by the
t11NsInRscns and t11NsOutRscns objects already defined in
[FC-NS-MIB].
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6. Definitions
6.1. The T11-FC-RSCN-MIB Module
T11-FC-RSCN-MIB DEFINITIONS ::= BEGIN
-- The Fibre Channel RSCN MIB
--
-- for the monitoring of registrations by Nx_Ports to receive
-- Registered State Change Notifications (RSCNs), and the
-- monitoring of RSCN usage.
--
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE,
NOTIFICATION-TYPE,
Counter32, mib-2 FROM SNMPv2-SMI -- [RFC2578]
MODULE-COMPLIANCE, OBJECT-GROUP,
NOTIFICATION-GROUP FROM SNMPv2-CONF -- [RFC2580]
TruthValue FROM SNMPv2-TC -- [RFC2579]
fcmInstanceIndex, fcmSwitchIndex,
FcNameIdOrZero, FcAddressIdOrZero FROM FC-MGMT-MIB -- [FC-MGMT]
T11NsGs4RejectReasonCode FROM T11-FC-NAME-SERVER-MIB -- [FC-NS-MIB]
T11FabricIndex FROM T11-TC-MIB; -- [FC-FAM-MIB]
t11FcRscnMIB MODULE-IDENTITY
LAST-UPDATED "200602130000Z"
ORGANIZATION "T11 "
CONTACT-INFO
" Claudio DeSanti
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134 USA
Phone: +1 408 853-9172
EMail: cds@cisco.com
Keith McCloghrie
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA USA 95134
Phone: +1 408-526-5260
Email: kzm@cisco.com"
DESCRIPTION
"The MIB module for the management of registrations
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by Nx_Ports to receive RSCNs (Registered State Change
Notifications) on a Fibre Channel network, as defined
in FC-LS, and for the monitoring of RSCNs sent/received
or rejected in a Fibre Channel network.
Copyright (C) The Internet Society (2006). This version of
this MIB module is part of RFC yyyy; see the RFC itself for
full legal notices."
-- RFC Editor: replace yyyy with actual RFC number & remove this note
REVISION "200602130000Z"
DESCRIPTION
"Initial version of this MIB module, published as RFCyyyy."
-- RFC-Editor, replace yyyy with actual RFC number & remove this note
::= { mib-2 nnn } -- to be assigned by IANA
-- RFC Editor: replace XXX with IANA-assigned number & remove this note
t11FcRscnNotifications OBJECT IDENTIFIER ::= { t11FcRscnMIB 0 }
t11FcRscnObjects OBJECT IDENTIFIER ::= { t11FcRscnMIB 1 }
t11FcRscnConformance OBJECT IDENTIFIER ::= { t11FcRscnMIB 2 }
t11FcRscnRegistrations OBJECT IDENTIFIER ::= { t11FcRscnObjects 1 }
t11FcRscnStats OBJECT IDENTIFIER ::= { t11FcRscnObjects 2 }
t11FcRscnInformation OBJECT IDENTIFIER ::= { t11FcRscnObjects 3 }
-- State Change Registration Table
t11FcRscnRegTable OBJECT-TYPE
SYNTAX SEQUENCE OF T11FcRscnRegEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of Nx_Ports that have registered to receive
RSCNs on all fabrics configured on one or more Fibre
Channel switches."
::= { t11FcRscnRegistrations 1 }
t11FcRscnRegEntry OBJECT-TYPE
SYNTAX T11FcRscnRegEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry containing information about one Nx_Port which
has registered with a particular switch (identified by
values of fcmInstanceIndex and fcmSwitchIndex) for a
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particular Fabric (identified by a t11FcRscnFabricIndex
value)."
INDEX { fcmInstanceIndex, fcmSwitchIndex, t11FcRscnFabricIndex,
t11FcRscnRegFcId }
::= { t11FcRscnRegTable 1 }
T11FcRscnRegEntry ::= SEQUENCE {
t11FcRscnFabricIndex T11FabricIndex,
t11FcRscnRegFcId FcAddressIdOrZero,
t11FcRscnRegType BITS
}
t11FcRscnFabricIndex OBJECT-TYPE
SYNTAX T11FabricIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An index value which uniquely identifies a particular
Fabric.
In a Fabric conformant to FC-SW-4, multiple Virtual Fabrics
can operate within one (or more) physical infrastructures.
In such a case, this index value is used to uniquely
identify a particular Fabric within a physical
infrastructure.
In a Fabric which has (can have) only a single Fabric
operating within the physical infrastructure, the
value of this Fabric Index will always be 1."
REFERENCE
"ANSI INCITS xxx-200n, Fibre Channel - Switch Fabric - 4
(FC-SW-4), T11/Project 1674-D/Rev 7.1, October 2004."
::= { t11FcRscnRegEntry 1 }
t11FcRscnRegFcId OBJECT-TYPE
SYNTAX FcAddressIdOrZero (SIZE (3))
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The Fibre Channel Address Identifier (FC_ID) of the
registering Nx_Port."
::= { t11FcRscnRegEntry 2 }
t11FcRscnRegType OBJECT-TYPE
SYNTAX BITS {
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fromFabricController(0),
fromNxPort(1)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object indicates the type of registration
desired by the registering Nx_Port, one bit per type:
'fromFabricController' -- RSCNs generated for events
detected by the Fabric Controller.
'fromNxPorts' -- RSCNs generated for events
detected by the affected Nx_Port."
REFERENCE
"ANSI INCITS xxx-200n, Fibre Channel - Link Services
(FC-LS), Rev 1.2, table 44, June 2005."
::= { t11FcRscnRegEntry 3 }
-- Statistics
t11FcRscnStatsTable OBJECT-TYPE
SYNTAX SEQUENCE OF T11FcRscnStatsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The RSCN-related statistics on all fabrics configured
on one or more Fibre Channel switches.
Two levels of statistics are included:
1) counters at the message-type level, for:
- the number of SCRs received/rejected,
- the number of RSCNs sent/received/rejected,
- the number of SW_RSCNs sent/received/rejected.
2) counters of sent/received RSCNs per 'Event
Qualifier' value. Note that if and when several
RSCN events are coalesced into a single RSCN
message, then that message may be counted in
more than one of these counters."
::= { t11FcRscnStats 1 }
t11FcRscnStatsEntry OBJECT-TYPE
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SYNTAX T11FcRscnStatsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry containing statistics for a particular Fabric
(identified by a t11FcRscnFabricIndex value) on a particular
switch (identified by values of fcmInstanceIndex and
fcmSwitchIndex)."
INDEX { fcmInstanceIndex, fcmSwitchIndex, t11FcRscnFabricIndex }
::= { t11FcRscnStatsTable 1 }
T11FcRscnStatsEntry ::= SEQUENCE {
t11FcRscnInScrs Counter32,
t11FcRscnInRscns Counter32,
t11FcRscnOutRscns Counter32,
t11FcRscnInSwRscns Counter32,
t11FcRscnOutSwRscns Counter32,
t11FcRscnScrRejects Counter32,
t11FcRscnRscnRejects Counter32,
t11FcRscnSwRscnRejects Counter32
t11FcRscnInUnspecifiedRscns Counter32,
t11FcRscnOutUnspecifiedRscns Counter32,
t11FcRscnInChangedAttribRscns Counter32,
t11FcRscnOutChangedAttribRscns Counter32,
t11FcRscnInChangedServiceRscns Counter32,
t11FcRscnOutChangedServiceRscns Counter32,
t11FcRscnInChangedSwitchRscns Counter32,
t11FcRscnOutChangedSwitchRscns Counter32,
t11FcRscnInRemovedRscns Counter32,
t11FcRscnOutRemovedRscns Counter32
}
t11FcRscnInScrs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of SCRs received from Nx_Ports
by this switch on this fabric."
::= { t11FcRscnStatsEntry 1 }
t11FcRscnInRscns OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
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STATUS current
DESCRIPTION
"The number of RSCNs received from Nx_Ports
by this switch on this fabric."
::= { t11FcRscnStatsEntry 2 }
t11FcRscnOutRscns OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RSCNs transmitted to Nx_Ports
by this switch on this fabric."
::= { t11FcRscnStatsEntry 3 }
t11FcRscnInSwRscns OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of SW_RSCNs received by this switch from
other switches on this fabric."
::= { t11FcRscnStatsEntry 4 }
t11FcRscnOutSwRscns OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of SW_RSCNs transmitted by this switch
from other switches on this fabric."
::= { t11FcRscnStatsEntry 5 }
t11FcRscnScrRejects OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of SCRs rejected by this switch on
this fabric."
::= { t11FcRscnStatsEntry 6 }
t11FcRscnRscnRejects OBJECT-TYPE
SYNTAX Counter32
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MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RSCNs rejected by this switch on this
fabric."
::= { t11FcRscnStatsEntry 7 }
t11FcRscnSwRscnRejects OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of SW_RSCN rejected by this switch on this
fabric."
::= { t11FcRscnStatsEntry 8 }
t11FcRscnInUnspecifiedRscns OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Registered State Change Notifications
(RSCNs) received by this switch on this fabric which
contained an RSCN Event Qualifier value of '0000'b
meaning 'Event is not specified'."
REFERENCE
"ANSI INCITS xxx-200n, Fibre Channel - Link Services
(FC-LS), Rev 1.2, June 2005, table 40."
::= { t11FcRscnStatsEntry 9 }
t11FcRscnOutUnspecifiedRscns OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Registered State Change Notifications
(RSCNs) sent by this switch on this fabric which
contained an RSCN Event Qualifier value of '0000'b
meaning 'Event is not specified'."
REFERENCE
"ANSI INCITS xxx-200n, Fibre Channel - Link Services
(FC-LS), Rev 1.2, June 2005, table 40."
::= { t11FcRscnStatsEntry 10 }
t11FcRscnInChangedAttribRscns OBJECT-TYPE
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SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Registered State Change Notifications
(RSCNs) received by this switch on this fabric which
contained an RSCN Event Qualifier value of '0002'b
meaning 'Changed Port Attribute'."
REFERENCE
"ANSI INCITS xxx-200n, Fibre Channel - Link Services
(FC-LS), Rev 1.2, June 2005, table 40."
::= { t11FcRscnStatsEntry 11 }
t11FcRscnOutChangedAttribRscns OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Registered State Change Notifications
(RSCNs) sent by this switch on this fabric which
contained an RSCN Event Qualifier value of '0002'b
meaning 'Changed Port Attribute'."
REFERENCE
"ANSI INCITS xxx-200n, Fibre Channel - Link Services
(FC-LS), Rev 1.2, June 2005, table 40."
::= { t11FcRscnStatsEntry 12 }
t11FcRscnInChangedServiceRscns OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Registered State Change Notifications
(RSCNs) received by this switch on this fabric which
contained an RSCN Event Qualifier value of '0003'b
meaning 'Changed Service Object'."
REFERENCE
"ANSI INCITS xxx-200n, Fibre Channel - Link Services
(FC-LS), Rev 1.2, June 2005, table 40."
::= { t11FcRscnStatsEntry 13 }
t11FcRscnOutChangedServiceRscns OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
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DESCRIPTION
"The number of Registered State Change Notifications
(RSCNs) sent by this switch on this fabric which
contained an RSCN Event Qualifier value of '0003'b
meaning 'Changed Service Object'."
REFERENCE
"ANSI INCITS xxx-200n, Fibre Channel - Link Services
(FC-LS), Rev 1.2, June 2005, table 40."
::= { t11FcRscnStatsEntry 14 }
t11FcRscnInChangedSwitchRscns OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Registered State Change Notifications
(RSCNs) received by this switch on this fabric which
contained an RSCN Event Qualifier value of '0004'b
meaning 'Changed Switch Configuration'."
REFERENCE
"ANSI INCITS xxx-200n, Fibre Channel - Link Services
(FC-LS), Rev 1.2, June 2005, table 40."
::= { t11FcRscnStatsEntry 15 }
t11FcRscnOutChangedSwitchRscns OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Registered State Change Notifications
(RSCNs) sent by this switch on this fabric which
contained an RSCN Event Qualifier value of '0004'b
meaning 'Changed Switch Configuration'."
REFERENCE
"ANSI INCITS xxx-200n, Fibre Channel - Link Services
(FC-LS), Rev 1.2, June 2005, table 40."
::= { t11FcRscnStatsEntry 16 }
t11FcRscnInRemovedRscns OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Registered State Change Notifications
(RSCNs) received by this switch on this fabric which
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contained an RSCN Event Qualifier value of '0005'b
meaning 'Removed Object'."
REFERENCE
"ANSI INCITS xxx-200n, Fibre Channel - Link Services
(FC-LS), Rev 1.2, June 2005, table 40."
::= { t11FcRscnStatsEntry 17 }
t11FcRscnOutRemovedRscns OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Registered State Change Notifications
(RSCNs) sent by this switch on this fabric which
contained an RSCN Event Qualifier value of '0005'b
meaning 'Removed Object'."
REFERENCE
"ANSI INCITS xxx-200n, Fibre Channel - Link Services
(FC-LS), Rev 1.2, June 2005, table 40."
::= { t11FcRscnStatsEntry 18 }
--
-- Notification Control Table
--
t11FcRscnNotifyControlTable OBJECT-TYPE
SYNTAX SEQUENCE OF T11FcRscnNotifyControlEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of control information for notifications
generated due to the rejection of an SCR or RSCN."
::= { t11FcRscnInformation 1 }
t11FcRscnNotifyControlEntry OBJECT-TYPE
SYNTAX T11FcRscnNotifyControlEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Each entry contains notification control information
concerning the rejection of RSCN/SCRs for a particular
fabric (identified by the value of t11FcRscnFabricIndex)
by a particular switch (identified by values of
fcmInstanceIndex and fcmSwitchIndex)."
INDEX { fcmInstanceIndex, fcmSwitchIndex, t11FcRscnFabricIndex }
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::= { t11FcRscnNotifyControlTable 1 }
T11FcRscnNotifyControlEntry ::= SEQUENCE {
t11FcRscnIlsRejectNotifyEnable TruthValue,
t11FcRscnElsRejectNotifyEnable TruthValue,
t11FcRscnRejectedRequestString OCTET STRING,
t11FcRscnRejectedRequestSource FcNameIdOrZero,
t11FcRscnRejectReasonCode T11NsGs4RejectReasonCode,
t11FcRscnRejectReasonCodeExp OCTET STRING,
t11FcRscnRejectReasonVendorCode OCTET STRING
}
t11FcRscnIlsRejectNotifyEnable OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object specifies if a t11FcRscnIlsRejectReqNotify
notification should be generated when this switch
rejects an SW_RSCN on this fabric."
DEFVAL { false }
::= { t11FcRscnNotifyControlEntry 1 }
t11FcRscnElsRejectNotifyEnable OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object specifies if a t11FcRscnElsRejectReqNotify
notification should be generated when this switch
rejects an RSCN or SCR on this fabric."
DEFVAL { false }
::= { t11FcRscnNotifyControlEntry 2 }
t11FcRscnRejectedRequestString OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (0..255))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The binary content of the RSCN or SCR or SW_RSCN which
was most recently rejected by this switch on this fabric.
The value is formatted as an octet string (in network
byte order) containing the payload of the rejected
RSCN or SCR as described in FC-LS, or the rejected
SW_RSCN as described in FC-SW-4.
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This object contains the zero-length string if and when
the RSCN/SCR/SW_RSCN payload is unavailable. When the
length of this object is 255 octets, it contains the
first 255 octets of the payload (in network-byte order)."
REFERENCE
"ANSI INCITS xxx-200n, Fibre Channel - Link Services
(FC-LS), Rev 1.2, June 2005, tables 38 & 43.
ANSI INCITS xxx-200n, Fibre Channel - Switch Fabric - 4
(FC-SW-4), T11/Project 1674-D/Rev 7.1, October 2004,
table 45."
::= { t11FcRscnNotifyControlEntry 3 }
t11FcRscnRejectedRequestSource OBJECT-TYPE
SYNTAX FcNameIdOrZero
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The WWN which was the source of the RSCN, SCR or
SW_RSCN which was most recently rejected by this switch
on this fabric."
::= { t11FcRscnNotifyControlEntry 4 }
t11FcRscnRejectReasonCode OBJECT-TYPE
SYNTAX T11NsGs4RejectReasonCode
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object contains the Reason Code of the most recent
rejection by this switch of an RSCN, SCR or SW_RSCN on
this fabric."
REFERENCE
"ANSI INCITS xxx-200n, Fibre Channel - Link Services
(FC-LS), Rev 1.2, June 2005, table 148.
ANSI INCITS xxx-200n, Fibre Channel - Switch Fabric - 4
(FC-SW-4), T11/Project 1674-D/Rev 7.1, October 2004,
table 5."
::= { t11FcRscnNotifyControlEntry 5 }
t11FcRscnRejectReasonCodeExp OBJECT-TYPE
SYNTAX OCTET STRING (SIZE(1))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object contains the Reason Code Explanation
of the most recent rejection by this switch of an
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RSCN, SCR or SW_RSCN on this fabric."
REFERENCE
"ANSI INCITS xxx-200n, Fibre Channel - Link Services
(FC-LS), Rev 1.2, June 2005, table 149.
ANSI INCITS xxx-200n, Fibre Channel - Switch Fabric - 4
(FC-SW-4), T11/Project 1674-D/Rev 7.1, October 2004,
table 6."
::= { t11FcRscnNotifyControlEntry 6 }
t11FcRscnRejectReasonVendorCode OBJECT-TYPE
SYNTAX OCTET STRING (SIZE(1))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object contains the Reason Vendor Specific
Code of the most recent rejection by this switch
of an RSCN, SCR or SW_RSCN on this fabric."
REFERENCE
"ANSI INCITS xxx-200n, Fibre Channel - Link Services
(FC-LS), Rev 1.2, June 2005, table 148.
ANSI INCITS xxx-200n, Fibre Channel - Switch Fabric - 4
(FC-SW-4), T11/Project 1674-D/Rev 7.1, October 2004,
section 6.1.3."
::= { t11FcRscnNotifyControlEntry 7 }
-- Notifications
t11FcRscnElsRejectReqNotify NOTIFICATION-TYPE
OBJECTS { t11FcRscnRejectedRequestString,
t11FcRscnRejectedRequestSource,
t11FcRscnRejectReasonCode,
t11FcRscnRejectReasonCodeExp,
t11FcRscnRejectReasonVendorCode }
STATUS current
DESCRIPTION
"This notification is generated when a switch rejects
an SCR or RSCN.
The value of t11FcRscnRejectedRequestString indicates the
binary content of the rejected request if available, or
the zero-length string otherwise. The source of the
rejected request is given by t11FcRscnRejectedRequestSource,
and the reason for rejection is given by the values of
t11FcRscnRejectReasonCode, t11FcRscnRejectReasonCodeExp
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and t11FcRscnRejectReasonVendorCode."
::= { t11FcRscnNotifications 1 }
t11FcRscnIlsRejectReqNotify NOTIFICATION-TYPE
OBJECTS { t11FcRscnRejectedRequestString,
t11FcRscnRejectedRequestSource,
t11FcRscnRejectReasonCode,
t11FcRscnRejectReasonCodeExp,
t11FcRscnRejectReasonVendorCode }
STATUS current
DESCRIPTION
"This notification is generated when a switch rejects
an SW_RSCN.
The value of t11FcRscnRejectedRequestString indicates the
binary content of the rejected request if available, or
the zero-length string otherwise. The source of the
rejected request is given by t11FcRscnRejectedRequestSource,
and the reason for rejection is given by the values of
t11FcRscnRejectReasonCode, t11FcRscnRejectReasonCodeExp
and t11FcRscnRejectReasonVendorCode."
::= { t11FcRscnNotifications 2 }
-- Conformance
t11FcRscnCompliances OBJECT IDENTIFIER ::= { t11FcRscnConformance 1 }
t11FcRscnGroups OBJECT IDENTIFIER ::= { t11FcRscnConformance 2 }
t11FcRscnCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for entities which implement
this MIB."
MODULE
MANDATORY-GROUPS { t11FcRscnRegistrationGroup,
t11FcRscnNotifyControlGroup,
t11FcRscnNotifyGroup }
GROUP t11FcRscnStatsGroup
DESCRIPTION
"These counters, containing RSCN-related statistics, are
mandatory only for those systems which count such events."
OBJECT t11FcRscnIlsRejectNotifyEnable
MIN-ACCESS read-only
DESCRIPTION
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"Write access is not required."
OBJECT t11FcRscnElsRejectNotifyEnable
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
::= { t11FcRscnCompliances 1 }
-- Units of conformance
t11FcRscnRegistrationGroup OBJECT-GROUP
OBJECTS { t11FcRscnRegType }
STATUS current
DESCRIPTION
"A collection of objects for monitoring RSCN
registrations."
::= { t11FcRscnGroups 1 }
t11FcRscnStatsGroup OBJECT-GROUP
OBJECTS { t11FcRscnInScrs,
t11FcRscnInRscns,
t11FcRscnOutRscns,
t11FcRscnInSwRscns,
t11FcRscnOutSwRscns,
t11FcRscnScrRejects,
t11FcRscnRscnRejects,
t11FcRscnSwRscnRejects,
t11FcRscnInUnspecifiedRscns,
t11FcRscnOutUnspecifiedRscns,
t11FcRscnInChangedAttribRscns,
t11FcRscnOutChangedAttribRscns,
t11FcRscnInChangedServiceRscns,
t11FcRscnOutChangedServiceRscns,
t11FcRscnInChangedSwitchRscns,
t11FcRscnOutChangedSwitchRscns,
t11FcRscnInRemovedRscns,
t11FcRscnOutRemovedRscns
}
STATUS current
DESCRIPTION
"A collection of objects for collecting RSCN-related
statistics."
::= { t11FcRscnGroups 2 }
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t11FcRscnNotifyControlGroup OBJECT-GROUP
OBJECTS { t11FcRscnIlsRejectNotifyEnable,
t11FcRscnElsRejectNotifyEnable,
t11FcRscnRejectedRequestString,
t11FcRscnRejectedRequestSource,
t11FcRscnRejectReasonCode,
t11FcRscnRejectReasonCodeExp,
t11FcRscnRejectReasonVendorCode
}
STATUS current
DESCRIPTION
"A collection of notification control and
notification information objects."
::= { t11FcRscnGroups 3 }
t11FcRscnNotifyGroup NOTIFICATION-GROUP
NOTIFICATIONS { t11FcRscnIlsRejectReqNotify,
t11FcRscnElsRejectReqNotify
}
STATUS current
DESCRIPTION
"A collection of notifications for monitoring
ILS and ELS rejections by the RSCN module."
::= { t11FcRscnGroups 4 }
END
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7. Intellectual Property
"The IETF takes no position regarding the validity or scope of any
intellectual property or other rights that might be claimed to
pertain to the implementation or use of the technology described in
this document or the extent to which any license under such rights
might or might not be available; neither does it represent that it
has made any effort to identify any such rights. Information on the
IETF's procedures with respect to rights in standards-track and
standards-related documentation can be found in BCP-11. Copies of
claims of rights made available for publication and any assurances of
licenses to be made available, or the result of an attempt made to
obtain a general license or permission for the use of such
proprietary rights by implementors or users of this specification can
be obtained from the IETF Secretariat."
"The IETF invites any interested party to bring to its attention any
copyrights, patents or patent applications, or other proprietary
rights which may cover technology that may be required to practice
this standard. Please address the information to the IETF Executive
Director."
8. Acknowledgements
This document began life as a work item of the INCITS Task Group
T11.5. We wish to acknowledge the contributions and comments from
the INCITS Technical Committee T11, including the following:
T11 Chair: Robert Snively, Brocade
T11 Vice Chair: Claudio DeSanti, Cisco Systems
T11.5 Chair: Roger Cummings, Symantec
T11.5 Vice Chair: Scott Kipp, McData
and T11.5 members.
9. Normative References
[RFC2578]
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.
[RFC2579]
McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose, M.
and S. Waldbusser, "Textual Conventions for SMIv2", STD 58, RFC
2579, April 1999.
Expires September 2006 [Page 25]
Internet Draft Fibre Channel RSCN MIB March 2006
[RFC2580]
McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose, M.
and S. Waldbusser, "Conformance Statements for SMIv2", STD 58, RFC
2580, April 1999.
[IF-MIB]
McCloghrie, K., and F. Kastenholz, "The Interfaces Group MIB", RFC
2863, June 2000.
[FC-MGMT]
K. McCloghrie, "Fibre Channel Management MIB", RFC 4044, May 2005.
[FC-SW-4]
"Fibre Channel - Switch Fabric - 4 (FC-SW-4)", ANSI INCITS
xxx-200n, T11/Project 1674-D/Rev 7.1,
http://www.t11.org/t11/stat.nsf/upnum/1674-d, October 2004.
[FC-FS]
"Fibre Channel - Framing and Signaling (FC-FS)", ANSI INCITS
373-2003, http://www.t11.org/t11/stat.nsf/upnum/1331-d, April 2003.
[FC-LS]
"Fibre Channel - Link Services (FC-LS)", ANSI INCITS xxx-200n, Rev
1.2, http://www.t11.org/t11/stat.nsf/upnum/1620-d, June 2005.
[FC-FAM-MIB]
DeSanti, C., Gaonkar, V., McCloghrie, K., and S. Gai, "Fibre-
Channel Fabric Address Manager MIB", Internet-Draft (draft-ietf-
imss-fc-fam-mib-nn.txt), work-in-progress.
[FC-NS-MIB]
DeSanti, C., Gaonkar, V., Vivek, H.K., McCloghrie, K., and S. Gai,
"Fibre-Channel Name Server MIB", Internet-Draft (draft-ietf-imss-
fc-nsm-mib-nn.txt), work-in-progress.
10. Informative References
[RFC2837]
Teow, K., "Definitions of Managed Objects for the Fabric Element in
Fibre Channel Standard", RFC 2837, May 2000.
[RFC3410]
Case, J., Mundy, R., Partain, D. and B. Stewart, "Introduction and
Applicability Statements for Internet-Standard Management
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Internet Draft Fibre Channel RSCN MIB March 2006
Framework", RFC 3410, December 2002.
11. IANA Considerations
IANA is requested to make a MIB OID assignment for the
T11-FC-RSCN-MIB module, under the appropriate subtree.
12. Security Considerations
There are a number of management objects defined in this MIB module
with 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. These objects and their
sensitivity/vulnerability are:
t11FcRscnIlsRejectNotifyEnable
t11FcRscnElsRejectNotifyEnable
-- ability to enable/disable a notification.
Some of the readable objects in this MIB module (i.e., objects with a
MAX-ACCESS other than not-accessible) may also be considered
sensitive or vulnerable in some network environments. It is thus
important to control even GET and/or NOTIFY access to these objects
and possibly to even encrypt the values of these objects when sending
them over the network via SNMP. These are the tables and objects and
their sensitivity/vulnerability:
t11FcRscnRegTable -- contains a list of Nx_Ports which are
currently registered to received RSCNs.
t11FcRscnStatsTable -- contains RSCN-related statistics.
t11FcRscnNotifyControlTable -- contains control and logging
information for notifications which are concerned with the
rejection of RSCN-related requests.
SNMP versions prior to SNMPv3 did not include adequate security.
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 module.
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Internet Draft Fibre Channel RSCN MIB March 2006
It is RECOMMENDED that implementors consider the security features as
provided by the SNMPv3 framework (see [RFC3410], section 8),
including full support for the SNMPv3 cryptographic mechanisms (for
authentication and privacy).
Further, deployment of SNMP versions prior to SNMPv3 is NOT
RECOMMENDED. Instead, it is RECOMMENDED to deploy SNMPv3 and to
enable cryptographic security. It is then a customer/operator
responsibility to ensure that the SNMP entity giving access to an
instance of this MIB module 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.
13. Authors' Addresses
Claudio DeSanti
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134 USA
Phone: +1 408 853-9172
EMail: cds@cisco.com
H.K. Vivek
Cisco Systems, Inc.
71 Millers Rd
Bangalore, India
Phone: +91 80 2289933x5117
EMail: hvivek@cisco.com
Keith McCloghrie
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA USA 95134
Phone: +1 408-526-5260
Email: kzm@cisco.com
Silvano Gai
Retired
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Full Copyright Statement
Copyright (C) The Internet Society (2006). This document is subject
to the rights, licenses and restrictions contained in BCP 78, and
except as set forth therein, the authors retain all their rights.
This document and the information contained herein are provided on an
"AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET
ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE
INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Disclaimer of validity
The IETF takes no position regarding the validity or scope of any
Intellectual Property Rights or other rights that might be claimed to
pertain to the implementation or use of the technology described in
this document or the extent to which any license under such rights
might or might not be available; nor does it represent that it has
made any independent effort to identify any such rights. Information
on the procedures with respect to rights in RFC documents can be
found in BCP 78 and BCP 79.
Copies of IPR disclosures made to the IETF Secretariat and any
assurances of licenses to be made available, or the result of an
attempt made to obtain a general license or permission for the use of
such proprietary rights by implementers or users of this
specification can be obtained from the IETF on-line IPR repository at
http://www.ietf.org/ipr.
The IETF invites any interested party to bring to its attention any
copyrights, patents or patent applications, or other proprietary
rights that may cover technology that may be required to implement
this standard. Please address the information to the IETF at
ietf-ipr@ietf.org.
Acknowledgment
Funding for the RFC Editor function is currently provided by the
Internet Society.
Expires September 2006 [Page 29]