X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?p=sim%2Fo1-interface.git;a=blobdiff_plain;f=ntsimulator%2Fdeploy%2Fo-ran-ru-fh%2Fyang%2Fietf-alarms%402019-09-11.yang;fp=ntsimulator%2Fdeploy%2Fo-ran-ru-fh%2Fyang%2Fietf-alarms%402019-09-11.yang;h=0000000000000000000000000000000000000000;hp=a1c195faf0e9788f84c75c744d13b8fa6fc16d46;hb=75385b2047f59353e3630e93736ddb6c9efa11bb;hpb=aa35a8ecece6592d35971150ee909f7044396bbe diff --git a/ntsimulator/deploy/o-ran-ru-fh/yang/ietf-alarms@2019-09-11.yang b/ntsimulator/deploy/o-ran-ru-fh/yang/ietf-alarms@2019-09-11.yang deleted file mode 100644 index a1c195f..0000000 --- a/ntsimulator/deploy/o-ran-ru-fh/yang/ietf-alarms@2019-09-11.yang +++ /dev/null @@ -1,1526 +0,0 @@ -module ietf-alarms { - yang-version 1.1; - namespace "urn:ietf:params:xml:ns:yang:ietf-alarms"; - prefix al; - - import ietf-yang-types { - prefix yang; - reference - "RFC 6991: Common YANG Data Types."; - } - - organization - "IETF CCAMP Working Group"; - contact - "WG Web: - WG List: - - Editor: Stefan Vallin - - - Editor: Martin Bjorklund - "; - description - "This module defines an interface for managing alarms. Main - inputs to the module design are the 3GPP Alarm Integration - Reference Point (IRP), ITU-T X.733, and ANSI/ISA-18.2 alarm - standards. - Main features of this module include: - - * Alarm list: - A list of all alarms. Cleared alarms stay in - the list until explicitly purged. - - * Operator actions on alarms: - Acknowledging and closing alarms. - - * Administrative actions on alarms: - Purging alarms from the list according to specific - criteria. - - * Alarm inventory: - A management application can read all - alarm types implemented by the system. - - * Alarm shelving: - Shelving (blocking) alarms according - to specific criteria. - - * Alarm profiles: - A management system can attach further - information to alarm types, for example, - overriding system-default severity - levels. - - This module uses a stateful view on alarms. An alarm is a state - for a specific resource (note that an alarm is not a - notification). An alarm type is a possible alarm state for a - resource. For example, the tuple: - - ('link-alarm', 'GigabitEthernet0/25') - - is an alarm of type 'link-alarm' on the resource - 'GigabitEthernet0/25'. - - Alarm types are identified using YANG identities and an optional - string-based qualifier. The string-based qualifier allows for - dynamic extension of the statically defined alarm types. Alarm - types identify a possible alarm state and not the individual - notifications. For example, the traditional 'link-down' and - 'link-up' notifications are two notifications referring to the - same alarm type 'link-alarm'. - - With this design, there is no ambiguity about how alarm and - alarm clear correlation should be performed; notifications that - report the same resource and alarm type are considered updates - of the same alarm, e.g., clearing an active alarm or changing - the severity of an alarm. The instrumentation can update the - severity and alarm text on an existing alarm. The above alarm - example can therefore look like the following: - - (('link-alarm', 'GigabitEthernet0/25'), - warning, - 'interface down while interface admin state is up') - - There is a clear separation between updates on the alarm from - the underlying resource, like clear, and updates from an - operator, like acknowledging or closing an alarm: - - (('link-alarm', 'GigabitEthernet0/25'), - warning, - 'interface down while interface admin state is up', - cleared, - closed) - - Administrative actions like removing closed alarms older than a - given time is supported. - - This YANG module does not define how the underlying - instrumentation detects and clears the specific alarms. That - belongs to the Standards Development Organization (SDO) or - enterprise that owns that specific technology. - - The key words 'MUST', 'MUST NOT', 'REQUIRED', 'SHALL', 'SHALL - NOT', 'SHOULD', 'SHOULD NOT', 'RECOMMENDED', 'NOT RECOMMENDED', - 'MAY', and 'OPTIONAL' in this document are to be interpreted as - described in BCP 14 (RFC 2119) (RFC 8174) when, and only when, - they appear in all capitals, as shown here. - - Copyright (c) 2019 IETF Trust and the persons identified as - authors of the code. All rights reserved. - - Redistribution and use in source and binary forms, with or - without modification, is permitted pursuant to, and subject to - the license terms contained in, the Simplified BSD License set - forth in Section 4.c of the IETF Trust's Legal Provisions - Relating to IETF Documents - (https://trustee.ietf.org/license-info). - - This version of this YANG module is part of RFC 8632; see - the RFC itself for full legal notices."; - - revision 2019-09-11 { - description - "Initial revision."; - reference - "RFC 8632: A YANG Data Model for Alarm Management"; - } - - /* - * Features - */ - - feature operator-actions { - description - "This feature indicates that the system supports operator - states on alarms."; - } - - feature alarm-shelving { - description - "This feature indicates that the system supports shelving - (blocking) alarms. - - Alarm shelving may have an impact on server processing - resources in order to match alarms against shelf - criteria."; - } - - feature alarm-history { - description - "This feature indicates that the server maintains a history - of state changes for each alarm. For example, if an alarm - toggles between cleared and active 10 times, these state - changes are present in a separate list in the alarm. - - Keeping the alarm history may have an impact on server - memory resources."; - } - - feature alarm-summary { - description - "This feature indicates that the server summarizes the number - of alarms per severity and operator state."; - } - - feature alarm-profile { - description - "The system enables clients to configure further information - to each alarm type."; - } - - feature severity-assignment { - description - "The system supports configurable alarm severity levels."; - reference - "ITU-T Recommendation M.3100: - Generic network information model - ITU-T Recommendation M.3160: - Generic, protocol-neutral management information model"; - } - - feature root-cause-analysis { - description - "The system supports identifying candidate root-cause - resources for an alarm, for example, a disk partition - root cause for a logger failure alarm."; - } - - feature service-impact-analysis { - description - "The system supports identifying candidate-impacted - resources for an alarm, for example, an interface state change - resulting in a link alarm, which can refer to a link as being - impacted."; - } - - feature alarm-correlation { - description - "The system supports correlating/grouping alarms - that belong together."; - } - - /* - * Identities - */ - - identity alarm-type-id { - description - "Base identity for alarm types. A unique identification of - the alarm, not including the resource. Different resources - can share alarm types. If the resource reports the same - alarm type, it is considered to be the same alarm. The alarm - type is a simplification of the different X.733 and 3GPP Alarm - IRP correlation mechanisms, and it allows for - hierarchical extensions. - - A string-based qualifier can be used in addition to the - identity in order to have different alarm types based on - information not known at design time, such as values in - textual SNMP Notification varbinds. - - Standards and vendors can define sub-identities to clearly - identify specific alarm types. - - This identity is abstract and MUST NOT be used for alarms."; - } - - /* - * Common types - */ - - typedef resource { - type union { - type instance-identifier { - require-instance false; - } - type yang:object-identifier; - type string; - type yang:uuid; - } - description - "This is an identification of the alarming resource, such as an - interface. It should be as fine-grained as possible to both - guide the operator and guarantee uniqueness of the alarms. - - If the alarming resource is modeled in YANG, this type will - be an instance-identifier. - - If the resource is an SNMP object, the type will be an - 'object-identifier'. - - If the resource is anything else, for example, a distinguished - name or a Common Information Model (CIM) path, this type will - be a string. - - If the alarming object is identified by a Universally Unique - Identifier (UUID), use the uuid type. Be cautious when using - this type, since a UUID is hard to use for an operator. - - If the server supports several models, the precedence should - be in the order as given in the union definition."; - } - - typedef resource-match { - type union { - type yang:xpath1.0; - type yang:object-identifier; - type string; - } - description - "This type is used to match resources of type 'resource'. - Since the type 'resource' is a union of different types, the - 'resource-match' type is also a union of corresponding types. - - If the type is given as an XPath 1.0 expression, a resource - of type 'instance-identifier' matches if the instance is part - of the node set that is the result of evaluating the XPath 1.0 - expression. For example, the XPath 1.0 expression: - - /ietf-interfaces:interfaces/ietf-interfaces:interface - [ietf-interfaces:type='ianaift:ethernetCsmacd'] - - would match the resource instance-identifier: - - /if:interfaces/if:interface[if:name='eth1'], - - assuming that the interface 'eth1' is of type - 'ianaift:ethernetCsmacd'. - - If the type is given as an object identifier, a resource of - type 'object-identifier' matches if the match object - identifier is a prefix of the resource's object identifier. - For example, the value: - - 1.3.6.1.2.1.2.2 - - would match the resource object identifier: - - 1.3.6.1.2.1.2.2.1.1.5 - - If the type is given as an UUID or a string, it is interpreted - as an XML Schema regular expression, which matches a resource - of type 'yang:uuid' or 'string' if the given regular - expression matches the resource string. - - If the type is given as an XPath expression, it is evaluated - in the following XPath context: - - o The set of namespace declarations is the set of prefix - and namespace pairs for all YANG modules implemented by - the server, where the prefix is the YANG module name and - the namespace is as defined by the 'namespace' statement - in the YANG module. - - If a leaf of this type is encoded in XML, all namespace - declarations in scope on the leaf element are added to - the set of namespace declarations. If a prefix found in - the XML is already present in the set of namespace - declarations, the namespace in the XML is used. - - o The set of variable bindings is empty. - - o The function library is the core function library, and - the functions are defined in Section 10 of RFC 7950. - - o The context node is the root node in the data tree."; - reference - "XML Schema Part 2: Datatypes Second Edition, - World Wide Web Consortium Recommendation - REC-xmlschema-2-20041028"; - } - - typedef alarm-text { - type string; - description - "The string used to inform operators about the alarm. This - MUST contain enough information for an operator to be able to - understand the problem and how to resolve it. If this string - contains structure, this format should be clearly documented - for programs to be able to parse that information."; - } - - typedef severity { - type enumeration { - enum indeterminate { - value 2; - description - "Indicates that the severity level could not be - determined. This level SHOULD be avoided."; - } - enum warning { - value 3; - description - "The 'warning' severity level indicates the detection of a - potential or impending service-affecting fault, before any - significant effects have been felt. Action should be - taken to further diagnose (if necessary) and correct the - problem in order to prevent it from becoming a more - serious service-affecting fault."; - } - enum minor { - value 4; - description - "The 'minor' severity level indicates the existence of a - non-service-affecting fault condition and that corrective - action should be taken in order to prevent a more serious - (for example, service-affecting) fault. Such a severity - can be reported, for example, when the detected alarm - condition is not currently degrading the capacity of the - resource."; - } - enum major { - value 5; - description - "The 'major' severity level indicates that a service- - affecting condition has developed and an urgent corrective - action is required. Such a severity can be reported, for - example, when there is a severe degradation in the - capability of the resource and its full capability must be - restored."; - } - enum critical { - value 6; - description - "The 'critical' severity level indicates that a service- - affecting condition has occurred and an immediate - corrective action is required. Such a severity can be - reported, for example, when a resource becomes totally out - of service and its capability must be restored."; - } - } - description - "The severity level of the alarm. Note well that the value - 'clear' is not included. Whether or not an alarm is cleared - is a separate boolean flag."; - reference - "ITU-T Recommendation X.733: Information Technology - - Open Systems Interconnection - - System Management: Alarm Reporting Function"; - } - - typedef severity-with-clear { - type union { - type enumeration { - enum cleared { - value 1; - description - "The alarm is cleared by the instrumentation."; - } - } - type severity; - } - description - "The severity level of the alarm including clear. This is used - only in notifications reporting state changes for an alarm."; - } - - typedef writable-operator-state { - type enumeration { - enum none { - value 1; - description - "The alarm is not being taken care of."; - } - enum ack { - value 2; - description - "The alarm is being taken care of. Corrective action not - taken yet or has failed"; - } - enum closed { - value 3; - description - "Corrective action taken successfully."; - } - } - description - "Operator states on an alarm. The 'closed' state indicates - that an operator considers the alarm being resolved. This is - separate from the alarm's 'is-cleared' leaf."; - } - - typedef operator-state { - type union { - type writable-operator-state; - type enumeration { - enum shelved { - value 4; - description - "The alarm is shelved. Alarms in /alarms/shelved-alarms/ - MUST be assigned this operator state by the server as - the last entry in the 'operator-state-change' list. The - text for that entry SHOULD include the shelf name."; - } - enum un-shelved { - value 5; - description - "The alarm is moved back to 'alarm-list' from a shelf. - Alarms that are moved from /alarms/shelved-alarms/ to - /alarms/alarm-list MUST be assigned this state by the - server as the last entry in the 'operator-state-change' - list. The text for that entry SHOULD include the shelf - name."; - } - } - } - description - "Operator states on an alarm. The 'closed' state indicates - that an operator considers the alarm being resolved. This is - separate from the alarm's 'is-cleared' leaf."; - } - - /* Alarm type */ - - typedef alarm-type-id { - type identityref { - base alarm-type-id; - } - description - "Identifies an alarm type. The description of the alarm type - id MUST indicate whether or not the alarm type is abstract. - An abstract alarm type is used as a base for other alarm type - ids and will not be used as a value for an alarm or be present - in the alarm inventory."; - } - - typedef alarm-type-qualifier { - type string; - description - "If an alarm type cannot be fully specified at design time by - 'alarm-type-id', this string qualifier is used in addition to - fully define a unique alarm type. - - The definition of alarm qualifiers is considered to be part of - the instrumentation and is out of scope for this module. An - empty string is used when this is part of a key."; - } - - /* - * Groupings - */ - - grouping common-alarm-parameters { - description - "Common parameters for an alarm. - - This grouping is used both in the alarm list and in the - notification representing an alarm-state change."; - leaf resource { - type resource; - mandatory true; - description - "The alarming resource. See also 'alt-resource'. This could - be, for example, a reference to the alarming interface"; - } - leaf alarm-type-id { - type alarm-type-id; - mandatory true; - description - "This leaf and the leaf 'alarm-type-qualifier' together - provide a unique identification of the alarm type."; - } - leaf alarm-type-qualifier { - type alarm-type-qualifier; - description - "This leaf is used when the 'alarm-type-id' leaf cannot - uniquely identify the alarm type. Normally, this is not the - case, and this leaf is the empty string."; - } - leaf-list alt-resource { - type resource; - description - "Used if the alarming resource is available over other - interfaces. This field can contain SNMP OIDs, CIM paths, or - 3GPP distinguished names, for example."; - } - list related-alarm { - if-feature "alarm-correlation"; - key "resource alarm-type-id alarm-type-qualifier"; - description - "References to related alarms. Note that the related alarm - might have been purged from the alarm list."; - leaf resource { - type leafref { - path "/alarms/alarm-list/alarm/resource"; - require-instance false; - } - description - "The alarming resource for the related alarm."; - } - leaf alarm-type-id { - type leafref { - path "/alarms/alarm-list/alarm" - + "[resource=current()/../resource]" - + "/alarm-type-id"; - require-instance false; - } - description - "The alarm type identifier for the related alarm."; - } - leaf alarm-type-qualifier { - type leafref { - path "/alarms/alarm-list/alarm" - + "[resource=current()/../resource]" - + "[alarm-type-id=current()/../alarm-type-id]" - + "/alarm-type-qualifier"; - require-instance false; - } - description - "The alarm qualifier for the related alarm."; - } - } - leaf-list impacted-resource { - if-feature "service-impact-analysis"; - type resource; - description - "Resources that might be affected by this alarm. If the - system creates an alarm on a resource and also has a mapping - to other resources that might be impacted, these resources - can be listed in this leaf-list. In this way, the system - can create one alarm instead of several. For example, if an - interface has an alarm, the 'impacted-resource' can - reference the aggregated port channels."; - } - leaf-list root-cause-resource { - if-feature "root-cause-analysis"; - type resource; - description - "Resources that are candidates for causing the alarm. If the - system has a mechanism to understand the candidate root - causes of an alarm, this leaf-list can be used to list the - root-cause candidate resources. In this way, the system can - create one alarm instead of several. An example might be a - logging system (alarm resource) that fails; the alarm can - reference the file system in the 'root-cause-resource' - leaf-list. Note that the intended use is not to also send - an alarm with the 'root-cause-resource' as an alarming - resource. The 'root-cause-resource' leaf-list is a hint and - should not also generate an alarm for the same problem."; - } - } - - grouping alarm-state-change-parameters { - description - "Parameters for an alarm-state change. - - This grouping is used both in the alarm list's status-change - list and in the notification representing an alarm-state - change."; - leaf time { - type yang:date-and-time; - mandatory true; - description - "The time the status of the alarm changed. The value - represents the time the real alarm-state change appeared in - the resource and not when it was added to the alarm - list. The /alarm-list/alarm/last-changed MUST be set to the - same value."; - } - leaf perceived-severity { - type severity-with-clear; - mandatory true; - description - "The severity of the alarm as defined by X.733. Note that - this may not be the original severity since the alarm may - have changed severity."; - reference - "ITU-T Recommendation X.733: Information Technology - - Open Systems Interconnection - - System Management: Alarm Reporting Function"; - } - leaf alarm-text { - type alarm-text; - mandatory true; - description - "A user-friendly text describing the alarm-state change."; - reference - "ITU-T Recommendation X.733: Information Technology - - Open Systems Interconnection - - System Management: Alarm Reporting Function"; - } - } - - grouping operator-parameters { - description - "This grouping defines parameters that can be changed by an - operator."; - leaf time { - type yang:date-and-time; - mandatory true; - description - "Timestamp for operator action on the alarm."; - } - leaf operator { - type string; - mandatory true; - description - "The name of the operator that has acted on this alarm."; - } - leaf state { - type operator-state; - mandatory true; - description - "The operator's view of the alarm state."; - } - leaf text { - type string; - description - "Additional optional textual information provided by the - operator."; - } - } - - grouping resource-alarm-parameters { - description - "Alarm parameters that originate from the resource view."; - leaf is-cleared { - type boolean; - mandatory true; - description - "Indicates the current clearance state of the alarm. An - alarm might toggle from active alarm to cleared alarm and - back to active again."; - } - leaf last-raised { - type yang:date-and-time; - mandatory true; - description - "An alarm may change severity level and toggle between - active and cleared during its lifetime. This leaf indicates - the last time it was raised ('is-cleared' = 'false')."; - } - leaf last-changed { - type yang:date-and-time; - mandatory true; - description - "A timestamp when the 'status-change' or - 'operator-state-change' list was last changed."; - } - leaf perceived-severity { - type severity; - mandatory true; - description - "The last severity of the alarm. - - If an alarm was raised with severity 'warning' but later - changed to 'major', this leaf will show 'major'."; - } - leaf alarm-text { - type alarm-text; - mandatory true; - description - "The last reported alarm text. This text should contain - information for an operator to be able to understand the - problem and how to resolve it."; - } - list status-change { - if-feature "alarm-history"; - key "time"; - min-elements 1; - description - "A list of status-change events for this alarm. - - The entry with latest timestamp in this list MUST - correspond to the leafs 'is-cleared', 'perceived-severity', - and 'alarm-text' for the alarm. - - This list is ordered according to the timestamps of alarm - state changes. The first item corresponds to the latest - state change. - - The following state changes create an entry in this - list: - - changed severity (warning, minor, major, critical) - - clearance status; this also updates the 'is-cleared' - leaf - - alarm-text update"; - uses alarm-state-change-parameters; - } - } - - grouping filter-input { - description - "Grouping to specify a filter construct on alarm information."; - leaf alarm-clearance-status { - type enumeration { - enum any { - description - "Ignore alarm-clearance status."; - } - enum cleared { - description - "Filter cleared alarms."; - } - enum not-cleared { - description - "Filter not-cleared alarms."; - } - } - mandatory true; - description - "The clearance status of the alarm."; - } - container older-than { - presence "Age specification"; - description - "Matches the 'last-status-change' leaf in the alarm."; - choice age-spec { - description - "Filter using date and time age."; - case seconds { - leaf seconds { - type uint16; - description - "Age expressed in seconds."; - } - } - case minutes { - leaf minutes { - type uint16; - description - "Age expressed in minutes."; - } - } - case hours { - leaf hours { - type uint16; - description - "Age expressed in hours."; - } - } - case days { - leaf days { - type uint16; - description - "Age expressed in days."; - } - } - case weeks { - leaf weeks { - type uint16; - description - "Age expressed in weeks."; - } - } - } - } - container severity { - presence "Severity filter"; - choice sev-spec { - description - "Filter based on severity level."; - leaf below { - type severity; - description - "Severity less than this leaf."; - } - leaf is { - type severity; - description - "Severity level equal to this leaf."; - } - leaf above { - type severity; - description - "Severity level higher than this leaf."; - } - } - description - "Filter based on severity."; - } - container operator-state-filter { - if-feature "operator-actions"; - presence "Operator state filter"; - leaf state { - type operator-state; - description - "Filter on operator state."; - } - leaf user { - type string; - description - "Filter based on which operator."; - } - description - "Filter based on operator state."; - } - } - - /* - * The /alarms data tree - */ - - container alarms { - description - "The top container for this module."; - container control { - description - "Configuration to control the alarm behavior."; - leaf max-alarm-status-changes { - type union { - type uint16; - type enumeration { - enum infinite { - description - "The status-change entries are accumulated - infinitely."; - } - } - } - default "32"; - description - "The 'status-change' entries are kept in a circular list - per alarm. When this number is exceeded, the oldest - status change entry is automatically removed. If the - value is 'infinite', the status-change entries are - accumulated infinitely."; - } - leaf notify-status-changes { - type enumeration { - enum all-state-changes { - description - "Send notifications for all status changes."; - } - enum raise-and-clear { - description - "Send notifications only for raise, clear, and - re-raise. Notifications for severity-level changes or - alarm-text changes are not sent."; - } - enum severity-level { - description - "Only send notifications for alarm-state changes - crossing the level specified in - 'notify-severity-level'. Always send clear - notifications."; - } - } - must '. != "severity-level" or ../notify-severity-level' { - description - "When notify-status-changes is 'severity-level', a value - must be given for 'notify-severity-level'."; - } - default "all-state-changes"; - description - "This leaf controls the notifications sent for alarm status - updates. There are three options: - - 1. Notifications are sent for all updates, severity-level - changes, and alarm-text changes. - - 2. Notifications are only sent for alarm raise and clear. - - 3. Notifications are sent for status changes equal to or - above the specified severity level. Clear - notifications shall always be sent. Notifications - shall also be sent for state changes that make an - alarm less severe than the specified level. - - For example, in option 3, assume that the severity level - is set to major and that the alarm has the following state - changes: - - [(Time, severity, clear)]: - [(T1, major, -), (T2, minor, -), (T3, warning, -), - (T4, minor, -), (T5, major, -), (T6, critical, -), - (T7, major. -), (T8, major, clear)] - - In that case, notifications will be sent at times - T1, T2, T5, T6, T7, and T8."; - } - leaf notify-severity-level { - when '../notify-status-changes = "severity-level"'; - type severity; - description - "Only send notifications for alarm-state changes crossing - the specified level. Always send clear notifications."; - } - container alarm-shelving { - if-feature "alarm-shelving"; - description - "The 'alarm-shelving/shelf' list is used to shelve - (block/filter) alarms. The conditions in the shelf - criteria are logically ANDed. The first matching shelf is - used, and an alarm is shelved only for this first match. - Matching alarms MUST appear in the - /alarms/shelved-alarms/shelved-alarm list, and - non-matching /alarms MUST appear in the - /alarms/alarm-list/alarm list. The server does not send - any notifications for shelved alarms. - - The server MUST maintain states (e.g., severity - changes) for the shelved alarms. - - Alarms that match the criteria shall have an - operator state 'shelved'. When the shelf - configuration removes an alarm from the shelf, the server - shall add the operator state 'un-shelved'."; - list shelf { - key "name"; - ordered-by user; - leaf name { - type string; - description - "An arbitrary name for the alarm shelf."; - } - description - "Each entry defines the criteria for shelving alarms. - Criteria are ANDed. If no criteria are specified, - all alarms will be shelved."; - leaf-list resource { - type resource-match; - description - "Shelve alarms for matching resources."; - } - list alarm-type { - key "alarm-type-id alarm-type-qualifier-match"; - description - "Any alarm matching the combined criteria of - 'alarm-type-id' and 'alarm-type-qualifier-match' - MUST be matched."; - leaf alarm-type-id { - type alarm-type-id; - description - "Shelve all alarms that have an 'alarm-type-id' that - is equal to or derived from the given - 'alarm-type-id'."; - } - leaf alarm-type-qualifier-match { - type string; - description - "An XML Schema regular expression that is used to - match an alarm type qualifier. Shelve all alarms - that match this regular expression for the alarm - type qualifier."; - reference - "XML Schema Part 2: Datatypes Second Edition, - World Wide Web Consortium Recommendation - REC-xmlschema-2-20041028"; - } - } - leaf description { - type string; - description - "An optional textual description of the shelf. This - description should include the reason for shelving - these alarms."; - } - } - } - } - container alarm-inventory { - config false; - description - "The 'alarm-inventory/alarm-type' list contains all possible - alarm types for the system. - - If the system knows for which resources a specific alarm - type can appear, it is also identified in the inventory. - The list also tells if each alarm type has a corresponding - clear state. The inventory shall only contain concrete - alarm types. - - The alarm inventory MUST be updated by the system when new - alarms can appear. This can be the case when installing new - software modules or inserting new card types. A - notification 'alarm-inventory-changed' is sent when the - inventory is changed."; - list alarm-type { - key "alarm-type-id alarm-type-qualifier"; - description - "An entry in this list defines a possible alarm."; - leaf alarm-type-id { - type alarm-type-id; - description - "The statically defined alarm type identifier for this - possible alarm."; - } - leaf alarm-type-qualifier { - type alarm-type-qualifier; - description - "The optionally dynamically defined alarm type identifier - for this possible alarm."; - } - leaf-list resource { - type resource-match; - description - "Optionally, specifies for which resources the alarm type - is valid."; - } - leaf will-clear { - type boolean; - mandatory true; - description - "This leaf tells the operator if the alarm will be - cleared when the correct corrective action has been - taken. Implementations SHOULD strive for detecting the - cleared state for all alarm types. - - If this leaf is 'true', the operator can monitor the - alarm until it becomes cleared after the corrective - action has been taken. - - If this leaf is 'false', the operator needs to validate - that the alarm is no longer active using other - mechanisms. Alarms can lack a corresponding clear due - to missing instrumentation or no logical - corresponding clear state."; - } - leaf-list severity-level { - type severity; - description - "This leaf-list indicates the possible severity levels of - this alarm type. Note well that 'clear' is not part of - the severity type. In general, the severity level - should be defined by the instrumentation based on the - dynamic state, rather than being defined statically by - the alarm type, in order to provide a relevant severity - level based on dynamic state and context. However, most - alarm types have a defined set of possible severity - levels, and this should be provided here."; - } - leaf description { - type string; - mandatory true; - description - "A description of the possible alarm. It SHOULD include - information on possible underlying root causes and - corrective actions."; - } - } - } - container summary { - if-feature "alarm-summary"; - config false; - description - "This container gives a summary of the number of alarms."; - list alarm-summary { - key "severity"; - description - "A global summary of all alarms in the system. The summary - does not include shelved alarms."; - leaf severity { - type severity; - description - "Alarm summary for this severity level."; - } - leaf total { - type yang:gauge32; - description - "Total number of alarms of this severity level."; - } - leaf not-cleared { - type yang:gauge32; - description - "Total number of alarms of this severity level - that are not cleared."; - } - leaf cleared { - type yang:gauge32; - description - "For this severity level, the number of alarms that are - cleared."; - } - leaf cleared-not-closed { - if-feature "operator-actions"; - type yang:gauge32; - description - "For this severity level, the number of alarms that are - cleared but not closed."; - } - leaf cleared-closed { - if-feature "operator-actions"; - type yang:gauge32; - description - "For this severity level, the number of alarms that are - cleared and closed."; - } - leaf not-cleared-closed { - if-feature "operator-actions"; - type yang:gauge32; - description - "For this severity level, the number of alarms that are - not cleared but closed."; - } - leaf not-cleared-not-closed { - if-feature "operator-actions"; - type yang:gauge32; - description - "For this severity level, the number of alarms that are - not cleared and not closed."; - } - } - leaf shelves-active { - if-feature "alarm-shelving"; - type empty; - description - "This is a hint to the operator that there are active - alarm shelves. This leaf MUST exist if the - /alarms/shelved-alarms/number-of-shelved-alarms is > 0."; - } - } - container alarm-list { - config false; - description - "The alarms in the system."; - leaf number-of-alarms { - type yang:gauge32; - description - "This object shows the total number of - alarms in the system, i.e., the total number - of entries in the alarm list."; - } - leaf last-changed { - type yang:date-and-time; - description - "A timestamp when the alarm list was last - changed. The value can be used by a manager to - initiate an alarm resynchronization procedure."; - } - list alarm { - key "resource alarm-type-id alarm-type-qualifier"; - description - "The list of alarms. Each entry in the list holds one - alarm for a given alarm type and resource. An alarm can - be updated from the underlying resource or by the user. - The following leafs are maintained by the resource: - 'is-cleared', 'last-change', 'perceived-severity', and - 'alarm-text'. An operator can change 'operator-state' and - 'operator-text'. - - Entries appear in the alarm list the first time an alarm - becomes active for a given alarm type and resource. - Entries do not get deleted when the alarm is cleared. - Clear status is represented as a boolean flag. - - Alarm entries are removed, i.e., purged, from the list by - an explicit purge action. For example, purge all alarms - that are cleared and in closed operator state that are - older than 24 hours. Purged alarms are removed from the - alarm list. If the alarm resource state changes after a - purge, the alarm will reappear in the alarm list. - - Systems may also remove alarms based on locally configured - policies; this is out of scope for this module."; - uses common-alarm-parameters; - leaf time-created { - type yang:date-and-time; - mandatory true; - description - "The timestamp when this alarm entry was created. This - represents the first time the alarm appeared; it can - also represent that the alarm reappeared after a purge. - Further state changes of the same alarm do not change - this leaf; these changes will update the 'last-changed' - leaf."; - } - uses resource-alarm-parameters; - list operator-state-change { - if-feature "operator-actions"; - key "time"; - description - "This list is used by operators to indicate the state of - human intervention on an alarm. For example, if an - operator has seen an alarm, the operator can add a new - item to this list indicating that the alarm is - acknowledged."; - uses operator-parameters; - } - action set-operator-state { - if-feature "operator-actions"; - description - "This is a means for the operator to indicate the level - of human intervention on an alarm."; - input { - leaf state { - type writable-operator-state; - mandatory true; - description - "Set this operator state."; - } - leaf text { - type string; - description - "Additional optional textual information."; - } - } - } - notification operator-action { - if-feature "operator-actions"; - description - "This notification is used to report that an operator - acted upon an alarm."; - uses operator-parameters; - } - } - action purge-alarms { - description - "This operation requests that the server delete entries - from the alarm list according to the supplied criteria. - - Typically, this operation is used to delete alarms that - are in closed operator state and older than a specified - time. - - The number of purged alarms is returned as an output - parameter."; - input { - uses filter-input; - } - output { - leaf purged-alarms { - type uint32; - description - "Number of purged alarms."; - } - } - } - action compress-alarms { - if-feature "alarm-history"; - description - "This operation requests that the server compress - entries in the alarm list by removing all but the - latest 'status-change' entry for all matching alarms. - Conditions in the input are logically ANDed. If no - input condition is given, all alarms are compressed."; - input { - leaf resource { - type resource-match; - description - "Compress the alarms matching this resource."; - } - leaf alarm-type-id { - type leafref { - path "/alarms/alarm-list/alarm/alarm-type-id"; - require-instance false; - } - description - "Compress alarms with this 'alarm-type-id'."; - } - leaf alarm-type-qualifier { - type leafref { - path "/alarms/alarm-list/alarm/alarm-type-qualifier"; - require-instance false; - } - description - "Compress the alarms with this - 'alarm-type-qualifier'."; - } - } - output { - leaf compressed-alarms { - type uint32; - description - "Number of compressed alarm entries."; - } - } - } - } - container shelved-alarms { - if-feature "alarm-shelving"; - config false; - description - "The shelved alarms. Alarms appear here if they match the - criteria in /alarms/control/alarm-shelving. This list does - not generate any notifications. The list represents alarms - that are considered not relevant by the operator. Alarms in - this list have an 'operator-state' of 'shelved'. This - cannot be changed."; - leaf number-of-shelved-alarms { - type yang:gauge32; - description - "This object shows the total number of current - alarms, i.e., the total number of entries - in the alarm list."; - } - leaf shelved-alarms-last-changed { - type yang:date-and-time; - description - "A timestamp when the shelved-alarm list was last changed. - The value can be used by a manager to initiate an alarm - resynchronization procedure."; - } - list shelved-alarm { - key "resource alarm-type-id alarm-type-qualifier"; - description - "The list of shelved alarms. Shelved alarms can only be - updated from the underlying resource; no operator actions - are supported."; - uses common-alarm-parameters; - leaf shelf-name { - type leafref { - path "/alarms/control/alarm-shelving/shelf/name"; - require-instance false; - } - description - "The name of the shelf."; - } - uses resource-alarm-parameters; - list operator-state-change { - if-feature "operator-actions"; - key "time"; - description - "This list is used by operators to indicate the state of - human intervention on an alarm. For shelved alarms, the - system has set the list item in the list to 'shelved'."; - uses operator-parameters; - } - } - action purge-shelved-alarms { - description - "This operation requests that the server delete entries from - the shelved-alarm list according to the supplied criteria. - In the shelved-alarm list, it makes sense to delete alarms - that are not relevant anymore. - - The number of purged alarms is returned as an output - parameter."; - input { - uses filter-input; - } - output { - leaf purged-alarms { - type uint32; - description - "Number of purged alarms."; - } - } - } - action compress-shelved-alarms { - if-feature "alarm-history"; - description - "This operation requests that the server compress entries - in the shelved-alarm list by removing all but the latest - 'status-change' entry for all matching shelved alarms. - Conditions in the input are logically ANDed. If no input - condition is given, all alarms are compressed."; - input { - leaf resource { - type leafref { - path "/alarms/shelved-alarms/shelved-alarm/resource"; - require-instance false; - } - description - "Compress the alarms with this resource."; - } - leaf alarm-type-id { - type leafref { - path "/alarms/shelved-alarms/shelved-alarm" - + "/alarm-type-id"; - require-instance false; - } - description - "Compress alarms with this 'alarm-type-id'."; - } - leaf alarm-type-qualifier { - type leafref { - path "/alarms/shelved-alarms/shelved-alarm" - + "/alarm-type-qualifier"; - require-instance false; - } - description - "Compress the alarms with this - 'alarm-type-qualifier'."; - } - } - output { - leaf compressed-alarms { - type uint32; - description - "Number of compressed alarm entries."; - } - } - } - } - list alarm-profile { - if-feature "alarm-profile"; - key "alarm-type-id alarm-type-qualifier-match resource"; - ordered-by user; - description - "This list is used to assign further information or - configuration for each alarm type. This module supports a - mechanism where the client can override the system-default - alarm severity levels. The 'alarm-profile' is also a useful - augmentation point for specific additions to alarm types."; - leaf alarm-type-id { - type alarm-type-id; - description - "The alarm type identifier to match."; - } - leaf alarm-type-qualifier-match { - type string; - description - "An XML Schema regular expression that is used to match the - alarm type qualifier."; - reference - "XML Schema Part 2: Datatypes Second Edition, - World Wide Web Consortium Recommendation - REC-xmlschema-2-20041028"; - } - leaf resource { - type resource-match; - description - "Specifies which resources to match."; - } - leaf description { - type string; - mandatory true; - description - "A description of the alarm profile."; - } - container alarm-severity-assignment-profile { - if-feature "severity-assignment"; - description - "The client can override the system-default severity - level."; - reference - "ITU-T Recommendation M.3100: - Generic network information model - ITU-T Recommendation M.3160: - Generic, protocol-neutral management information model"; - leaf-list severity-level { - type severity; - ordered-by user; - description - "Specifies the configured severity level(s) for the - matching alarm. If the alarm has several severity - levels, the leaf-list shall be given in rising severity - order. The original M3100/M3160 ASAP function only - allows for a one-to-one mapping between alarm type and - severity, but since YANG module supports stateful - alarms, the mapping must allow for several severity - levels. - - Assume a high-utilization alarm type with two thresholds - with the system-default severity levels of threshold1 = - warning and threshold2 = minor. Setting this leaf-list - to (minor, major) will assign the severity levels as - threshold1 = minor and threshold2 = major"; - } - } - } - } - - /* - * Notifications - */ - - notification alarm-notification { - description - "This notification is used to report a state change for an - alarm. The same notification is used for reporting a newly - raised alarm, a cleared alarm, or changing the text and/or - severity of an existing alarm."; - uses common-alarm-parameters; - uses alarm-state-change-parameters; - } - - notification alarm-inventory-changed { - description - "This notification is used to report that the list of possible - alarms has changed. This can happen when, for example, a new - software module is installed or a new physical card is - inserted."; - } -}