This module describes a YANG model for routing policy configuration. It is a limited subset of all of the policy configuration p...
Version: 2020-08-18
module openconfig-routing-policy { yang-version 1; namespace "http://openconfig.net/yang/routing-policy"; prefix oc-rpol; import openconfig-inet-types { prefix oc-inet; } import openconfig-interfaces { prefix oc-if; } import openconfig-policy-types { prefix oc-pol-types; } import openconfig-extensions { prefix oc-ext; } organization "OpenConfig working group"; contact "OpenConfig working group netopenconfig@googlegroups.com"; description "This module describes a YANG model for routing policy configuration. It is a limited subset of all of the policy configuration parameters available in the variety of vendor implementations, but supports widely used constructs for managing how routes are imported, exported, and modified across different routing protocols. This module is intended to be used in conjunction with routing protocol configuration models (e.g., BGP) defined in other modules. Route policy expression: Policies are expressed as a set of top-level policy definitions, each of which consists of a sequence of policy statements. Policy statements consist of simple condition-action tuples. Conditions may include mutiple match or comparison operations, and similarly actions may be multitude of changes to route attributes or a final disposition of accepting or rejecting the route. Route policy evaluation: Policy definitions are referenced in routing protocol configurations using import and export configuration statements. The arguments are members of an ordered list of named policy definitions which comprise a policy chain, and optionally, an explicit default policy action (i.e., reject or accept). Evaluation of each policy definition proceeds by evaluating its corresponding individual policy statements in order. When a condition statement in a policy statement is satisfied, the corresponding action statement is executed. If the action statement has either accept-route or reject-route actions, policy evaluation of the current policy definition stops, and no further policy definitions in the chain are evaluated. If the condition is not satisfied, then evaluation proceeds to the next policy statement. If none of the policy statement conditions are satisfied, then evaluation of the current policy definition stops, and the next policy definition in the chain is evaluated. When the end of the policy chain is reached, the default route disposition action is performed (i.e., reject-route unless an an alternate default action is specified for the chain). Policy 'subroutines' (or nested policies) are supported by allowing policy statement conditions to reference another policy definition which applies conditions and actions from the referenced policy before returning to the calling policy statement and resuming evaluation. If the called policy results in an accept-route (either explicit or by default), then the subroutine returns an effective true value to the calling policy. Similarly, a reject-route action returns false. If the subroutine returns true, the calling policy continues to evaluate the remaining conditions (using a modified route if the subroutine performed any changes to the route)."; revision "2020-08-18" { description "Fix regex anchors for masklength-range's pattern statement."; reference "3.2.2"; } revision "2020-06-30" { description "Add OpenConfig POSIX pattern extensions."; reference "3.2.1"; } revision "2020-04-02" { description "Add generic set-tag operation back to support local and IGP tagged routes."; reference "3.2.0"; } revision "2018-11-21" { description "Add OpenConfig module metadata extensions."; reference "3.1.1"; } revision "2018-06-05" { description "Add PIM, IGMP to INSTALL_PROTOCOL_TYPES identity"; reference "3.1.0"; } revision "2017-07-14" { description "Replace policy choice node/type with policy-result enumeration;simplified defined set naming;removed generic IGP actions; migrate to OpenConfig types; added mode for prefix sets"; reference "3.0.0"; } revision "2016-05-12" { description "OpenConfig public release"; reference "2.0.1"; } oc-ext:openconfig-version "3.2.2"; oc-ext:regexp-posix; oc-ext:catalog-organization "openconfig"; oc-ext:origin "openconfig"; typedef default-policy-type { type enumeration { enum "ACCEPT_ROUTE" { value 0; description "Default policy to accept the route"; } enum "REJECT_ROUTE" { value 1; description "Default policy to reject the route"; } } description "Type used to specify route disposition in a policy chain"; } typedef policy-result-type { type enumeration { enum "ACCEPT_ROUTE" { value 0; description "Policy accepts the route"; } enum "REJECT_ROUTE" { value 1; description "Policy rejects the route"; } } description "Type used to specify route disposition in a policy chain"; } grouping prefix-set-config { description "Configuration data for prefix sets used in policy definitions."; leaf name { type string; description "name / label of the prefix set -- this is used to reference the set in match conditions"; } leaf mode { type enumeration { enum "IPV4" { value 0; description "Prefix set contains IPv4 prefixes only"; } enum "IPV6" { value 1; description "Prefix set contains IPv6 prefixes only"; } enum "MIXED" { value 2; description "Prefix set contains mixed IPv4 and IPv6 prefixes"; } } description "Indicates the mode of the prefix set, in terms of which address families (IPv4, IPv6, or both) are present. The mode provides a hint, but the device must validate that all prefixes are of the indicated type, and is expected to reject the configuration if there is a discrepancy. The MIXED mode may not be supported on devices that require prefix sets to be of only one address family."; } } // grouping prefix-set-config grouping prefix-set-state { description "Operational state data for prefix sets"; } // grouping prefix-set-state grouping prefix-set-top { description "Top-level data definitions for a list of IPv4 or IPv6 prefixes which are matched as part of a policy"; container prefix-sets { description "Enclosing container "; list prefix-set { key "name"; description "List of the defined prefix sets"; leaf name { type leafref { path "../config/name"; } description "Reference to prefix name list key"; } container config { description "Configuration data for prefix sets"; uses prefix-set-config; } // container config container state { config false; description "Operational state data "; uses prefix-set-config; uses prefix-set-state; } // container state uses prefix-top; } // list prefix-set } // container prefix-sets } // grouping prefix-set-top grouping prefix-config { description "Configuration data for a prefix definition"; leaf ip-prefix { type oc-inet:ip-prefix; mandatory true; description "The prefix member in CIDR notation -- while the prefix may be either IPv4 or IPv6, most implementations require all members of the prefix set to be the same address family. Mixing address types in the same prefix set is likely to cause an error."; } leaf masklength-range { type string { oc-ext:posix-pattern "^(([0-9]+\.\.[0-9]+)|exact)$"; pattern '^(([0-9]+\.\.[0-9]+)|exact)$'; } description "Defines a range for the masklength, or 'exact' if the prefix has an exact length. Example: 10.3.192.0/21 through 10.3.192.0/24 would be expressed as prefix: 10.3.192.0/21, masklength-range: 21..24. Example: 10.3.192.0/21 would be expressed as prefix: 10.3.192.0/21, masklength-range: exact"; } } // grouping prefix-config grouping prefix-state { description "Operational state data for prefix definitions"; } // grouping prefix-state grouping prefix-top { description "Top-level grouping for prefixes in a prefix list"; container prefixes { description "Enclosing container for the list of prefixes in a policy prefix list"; list prefix { key "ip-prefix masklength-range"; description "List of prefixes in the prefix set"; leaf ip-prefix { type leafref { path "../config/ip-prefix"; } description "Reference to the ip-prefix list key."; } leaf masklength-range { type leafref { path "../config/masklength-range"; } description "Reference to the masklength-range list key"; } container config { description "Configuration data for prefix definition"; uses prefix-config; } // container config container state { config false; description "Operational state data for prefix definition"; uses prefix-config; uses prefix-state; } // container state } // list prefix } // container prefixes } // grouping prefix-top grouping neighbor-set-config { description "Configuration data for neighbor set definitions"; leaf name { type string; description "name / label of the neighbor set -- this is used to reference the set in match conditions"; } leaf-list address { type oc-inet:ip-address; description "List of IP addresses in the neighbor set"; } } // grouping neighbor-set-config grouping neighbor-set-state { description "Operational state data for neighbor set definitions"; } // grouping neighbor-set-state grouping neighbor-set-top { description "Top-level data definition for a list of IPv4 or IPv6 neighbors which can be matched in a routing policy"; container neighbor-sets { description "Enclosing container for the list of neighbor set definitions"; list neighbor-set { key "name"; description "List of defined neighbor sets for use in policies."; leaf name { type leafref { path "../config/name"; } description "Reference to the neighbor set name list key."; } container config { description "Configuration data for neighbor sets."; uses neighbor-set-config; } // container config container state { config false; description "Operational state data for neighbor sets."; uses neighbor-set-config; uses neighbor-set-state; } // container state } // list neighbor-set } // container neighbor-sets } // grouping neighbor-set-top grouping tag-set-config { description "Configuration data for tag set definitions."; leaf name { type string; description "name / label of the tag set -- this is used to reference the set in match conditions"; } leaf-list tag-value { type oc-pol-types:tag-type; description "Value of the tag set member"; } } // grouping tag-set-config grouping tag-set-state { description "Operational state data for tag set definitions."; } // grouping tag-set-state grouping tag-set-top { description "Top-level data definitions for a list of tags which can be matched in policies"; container tag-sets { description "Enclosing container for the list of tag sets."; list tag-set { key "name"; description "List of tag set definitions."; leaf name { type leafref { path "../config/name"; } description "Reference to the tag set name list key"; } container config { description "Configuration data for tag sets"; uses tag-set-config; } // container config container state { config false; description "Operational state data for tag sets"; uses tag-set-config; uses tag-set-state; } // container state } // list tag-set } // container tag-sets } // grouping tag-set-top grouping generic-defined-sets { description "Data definitions for pre-defined sets of attributes used in policy match conditions. These sets are generic and can be used in matching conditions in different routing protocols."; uses prefix-set-top; uses neighbor-set-top; uses tag-set-top; } // grouping generic-defined-sets grouping match-set-options-group { description "Grouping containing options relating to how a particular set should be matched"; leaf match-set-options { type oc-pol-types:match-set-options-type; description "Optional parameter that governs the behaviour of the match operation"; } } // grouping match-set-options-group grouping match-set-options-restricted-group { description "Grouping for a restricted set of match operation modifiers"; leaf match-set-options { type oc-pol-types:match-set-options-restricted-type; description "Optional parameter that governs the behaviour of the match operation. This leaf only supports matching on ANY member of the set or inverting the match. Matching on ALL is not supported"; } } // grouping match-set-options-restricted-group grouping match-interface-condition-config { description "Configuration data for interface match condition"; uses oc-if:interface-ref-common; } // grouping match-interface-condition-config grouping match-interface-condition-state { description "Operational state data for interface match condition"; } // grouping match-interface-condition-state grouping match-interface-condition-top { description "Top-level grouping for the interface match condition"; container match-interface { description "Top-level container for interface match conditions"; container config { description "Configuration data for interface match conditions"; uses match-interface-condition-config; } // container config container state { config false; description "Operational state data for interface match conditions"; uses match-interface-condition-config; uses match-interface-condition-state; } // container state } // container match-interface } // grouping match-interface-condition-top grouping prefix-set-condition-config { description "Configuration data for prefix-set conditions"; leaf prefix-set { type leafref { path "../../../../../../../../defined-sets/prefix-sets/prefix-set/config/name"; } description "References a defined prefix set"; } uses match-set-options-restricted-group; } // grouping prefix-set-condition-config grouping prefix-set-condition-state { description "Operational state data for prefix-set conditions"; } // grouping prefix-set-condition-state grouping prefix-set-condition-top { description "Top-level grouping for prefix-set conditions"; container match-prefix-set { description "Match a referenced prefix-set according to the logic defined in the match-set-options leaf"; container config { description "Configuration data for a prefix-set condition"; uses prefix-set-condition-config; } // container config container state { config false; description "Operational state data for a prefix-set condition"; uses prefix-set-condition-config; uses prefix-set-condition-state; } // container state } // container match-prefix-set } // grouping prefix-set-condition-top grouping neighbor-set-condition-config { description "Configuration data for neighbor-set conditions"; leaf neighbor-set { type leafref { path "../../../../../../../../defined-sets/neighbor-sets/neighbor-set/name"; } description "References a defined neighbor set"; } uses match-set-options-restricted-group; } // grouping neighbor-set-condition-config grouping neighbor-set-condition-state { description "Operational state data for neighbor-set conditions"; } // grouping neighbor-set-condition-state grouping neighbor-set-condition-top { description "Top-level grouping for neighbor-set conditions"; container match-neighbor-set { description "Match a referenced neighbor set according to the logic defined in the match-set-options-leaf"; container config { description "Configuration data "; uses neighbor-set-condition-config; } // container config container state { config false; description "Operational state data "; uses neighbor-set-condition-config; uses neighbor-set-condition-state; } // container state } // container match-neighbor-set } // grouping neighbor-set-condition-top grouping tag-set-condition-config { description "Configuration data for tag-set condition statements"; leaf tag-set { type leafref { path "../../../../../../../../defined-sets/tag-sets/tag-set/name"; } description "References a defined tag set"; } uses match-set-options-restricted-group; } // grouping tag-set-condition-config grouping tag-set-condition-state { description "Operational state data for tag-set condition statements"; } // grouping tag-set-condition-state grouping tag-set-condition-top { description "Top-level grouping for tag-set conditions"; container match-tag-set { description "Match a referenced tag set according to the logic defined in the match-options-set leaf"; container config { description "Configuration data for tag-set conditions"; uses tag-set-condition-config; } // container config container state { config false; description "Operational state data tag-set conditions"; uses tag-set-condition-config; uses tag-set-condition-state; } // container state } // container match-tag-set } // grouping tag-set-condition-top grouping generic-conditions { description "Condition statement definitions for checking membership in a generic defined set"; uses match-interface-condition-top; uses prefix-set-condition-top; uses neighbor-set-condition-top; uses tag-set-condition-top; } // grouping generic-conditions grouping generic-actions { description "Definitions for common set of policy action statements that manage the disposition or control flow of the policy"; leaf policy-result { type policy-result-type; description "Select the final disposition for the route, either accept or reject."; } } // grouping generic-actions grouping policy-conditions-config { description "Configuration data for general policy conditions, i.e., those not related to match-sets"; leaf call-policy { type leafref { path "../../../../../../../oc-rpol:policy-definitions/oc-rpol:policy-definition/oc-rpol:name"; } description "Applies the statements from the specified policy definition and then returns control the current policy statement. Note that the called policy may itself call other policies (subject to implementation limitations). This is intended to provide a policy 'subroutine' capability. The called policy should contain an explicit or a default route disposition that returns an effective true (accept-route) or false (reject-route), otherwise the behavior may be ambiguous and implementation dependent"; } leaf install-protocol-eq { type identityref { base oc-pol-types:INSTALL_PROTOCOL_TYPE; } description "Condition to check the protocol / method used to install the route into the local routing table"; } } // grouping policy-conditions-config grouping policy-conditions-state { description "Operational state data for policy conditions"; } // grouping policy-conditions-state grouping policy-conditions-top { description "Top-level grouping for policy conditions"; container conditions { description "Condition statements for the current policy statement"; container config { description "Configuration data for policy conditions"; uses policy-conditions-config; } // container config container state { config false; description "Operational state data for policy conditions"; uses policy-conditions-config; uses policy-conditions-state; } // container state uses generic-conditions; } // container conditions } // grouping policy-conditions-top grouping policy-statements-config { description "Configuration data for policy statements"; leaf name { type string; description "name of the policy statement"; } } // grouping policy-statements-config grouping policy-statements-state { description "Operational state data for policy statements"; } // grouping policy-statements-state grouping policy-actions-config { description "Configuration data for policy actions"; uses generic-actions; } // grouping policy-actions-config grouping policy-actions-state { description "Operational state data for policy actions"; } // grouping policy-actions-state grouping policy-actions-tag-set { description "Protocol agnostic tag specification."; container set-tag { description "Policy actions associated with setting tags for a particular route. A tag is an abstract entity which can be mapped to underlying protocol attributes where applicable."; container config { description "Configuration of tag application"; uses action-tag-set-config; } // container config container state { config false; description "Operational state related to tag application."; uses action-tag-set-config; } // container state container inline { when "../config/mode = 'INLINE'" { description "In-line configuration is only relevant when the action's set-tag mode is specified explicitly to be INLINE."; } description "The tags specified in this container are set on a route using the values directly. It is applicable when the mode of application is explicitly specified as INLINE."; container config { description "Configuration values related to in-line tag specification."; uses action-tag-set-inline-config; } // container config container state { config false; description "Operational state related to in-line tag specification."; uses action-tag-set-inline-config; } // container state } // container inline container reference { when "../config/mode = 'REFERENCE'" { description "Reference configuration is only relevant when the action's set-tag mode is specified explicitly to be REFERENCE."; } description "This container is applicable when the mode of application is explicitly specified to as REFERENCE. The tags set on a route are those that are specified within the tag-set"; container config { description "Configuration values related to specifying a tag-set to be applied to a route."; uses action-tag-set-reference-config; } // container config container state { config false; description "Operational state related to specifying a tag-set to be applied to a route."; uses action-tag-set-reference-config; } // container state } // container reference } // container set-tag } // grouping policy-actions-tag-set grouping action-tag-set-config { description "Configuration leaves for setting a tag applicable to both inline and reference modes."; leaf mode { type enumeration { enum "INLINE" { value 0; description "Use an in-line specified list of tags"; } enum "REFERENCE" { value 1; description "Use a reference to a defined tag-set."; } } description "This leaf controls the source of the tags that are set as a result of the action. In the case that the INLINE value is specified, the list of tags specified within the action is applied to matching prefixes. In the case that the REFERENCE value is specified, a pre-defined set of tags is utilised."; } } // grouping action-tag-set-config grouping action-tag-set-inline-config { description "Configuration leaves for setting a tag within an action using an in-line specified set of tags."; leaf-list tag { type oc-pol-types:tag-type; description "Set one or more tags for prefixes that match the specified condition(s) using the specified tag values. When a tag is set it MUST be possible to match the value set in subsequent policies on the local device. Where the protocol that is carrying the prefix has a tag field (OSPF, and IS-IS in particular) the tag MUST be set in the corresponding protocol advertisements of the prefix."; } } // grouping action-tag-set-inline-config grouping action-tag-set-reference-config { description "Configuration leaves for setting a tag within an action using a set of tags that is specified in a defined-set."; leaf tag-set { type leafref { path "../../../../../../../../../defined-sets/tag-sets/tag-set/config/name"; } description "Use the referenced tag-set to set tags on the prefixes that match the specified conditions. When a tag is set it MUST be possible to match the value set in subsequent policies on the local device. where the protocol that is carrying the prefix has a tag field (OSPF, and IS-IS for in particular) the tag MUST be set in the corresponding protocol advertisements of the prefix."; } } // grouping action-tag-set-reference-config grouping policy-actions-top { description "Top-level grouping for policy actions"; container actions { description "Top-level container for policy action statements"; container config { description "Configuration data for policy actions"; uses policy-actions-config; } // container config container state { config false; description "Operational state data for policy actions"; uses policy-actions-config; uses policy-actions-state; } // container state uses policy-actions-tag-set; } // container actions } // grouping policy-actions-top grouping policy-statements-top { description "Top-level grouping for the policy statements list"; container statements { description "Enclosing container for policy statements"; list statement { key "name"; ordered-by user; description "Policy statements group conditions and actions within a policy definition. They are evaluated in the order specified (see the description of policy evaluation at the top of this module."; leaf name { type leafref { path "../config/name"; } description "Reference to list key"; } container config { description "Configuration data for policy statements"; uses policy-statements-config; } // container config container state { config false; description "Operational state data for policy statements"; uses policy-statements-config; uses policy-statements-state; } // container state uses policy-conditions-top; uses policy-actions-top; } // list statement } // container statements } // grouping policy-statements-top grouping defined-sets-top { description "Top-level grouping for defined set definitions"; container defined-sets { description "Predefined sets of attributes used in policy match statements"; uses generic-defined-sets; } // container defined-sets } // grouping defined-sets-top grouping policy-definitions-config { description "Configuration data for policy definitions"; leaf name { type string; description "Name of the top-level policy definition -- this name is used in references to the current policy"; } } // grouping policy-definitions-config grouping policy-definitions-state { description "Operational state data for policy definitions"; } // grouping policy-definitions-state grouping policy-definitions-top { description "Top-level grouping for the policy definition list"; container policy-definitions { description "Enclosing container for the list of top-level policy definitions"; list policy-definition { key "name"; description "List of top-level policy definitions, keyed by unique name. These policy definitions are expected to be referenced (by name) in policy chains specified in import or export configuration statements."; leaf name { type leafref { path "../config/name"; } description "Reference to the list key"; } container config { description "Configuration data for policy defintions"; uses policy-definitions-config; } // container config container state { config false; description "Operational state data for policy definitions"; uses policy-definitions-config; uses policy-definitions-state; } // container state uses policy-statements-top; } // list policy-definition } // container policy-definitions } // grouping policy-definitions-top grouping routing-policy-top { description "Top level container for OpenConfig routing policy"; container routing-policy { description "Top-level container for all routing policy configuration"; uses defined-sets-top; uses policy-definitions-top; } // container routing-policy } // grouping routing-policy-top grouping apply-policy-import-config { description "Configuration data for applying import policies"; leaf-list import-policy { type leafref { path "/oc-rpol:routing-policy/oc-rpol:policy-definitions/oc-rpol:policy-definition/oc-rpol:name"; } ordered-by user; description "list of policy names in sequence to be applied on receiving a routing update in the current context, e.g., for the current peer group, neighbor, address family, etc."; } leaf default-import-policy { type default-policy-type; default "REJECT_ROUTE"; description "explicitly set a default policy if no policy definition in the import policy chain is satisfied."; } } // grouping apply-policy-import-config grouping apply-policy-export-config { description "Configuration data for applying export policies"; leaf-list export-policy { type leafref { path "/oc-rpol:routing-policy/oc-rpol:policy-definitions/oc-rpol:policy-definition/oc-rpol:name"; } ordered-by user; description "list of policy names in sequence to be applied on sending a routing update in the current context, e.g., for the current peer group, neighbor, address family, etc."; } leaf default-export-policy { type default-policy-type; default "REJECT_ROUTE"; description "explicitly set a default policy if no policy definition in the export policy chain is satisfied."; } } // grouping apply-policy-export-config grouping apply-policy-config { description "Configuration data for routing policies"; uses apply-policy-import-config; uses apply-policy-export-config; } // grouping apply-policy-config grouping apply-policy-state { description "Operational state associated with routing policy"; } // grouping apply-policy-state grouping apply-policy-group { description "Top level container for routing policy applications. This grouping is intended to be used in routing models where needed."; container apply-policy { description "Anchor point for routing policies in the model. Import and export policies are with respect to the local routing table, i.e., export (send) and import (receive), depending on the context."; container config { description "Policy configuration data."; uses apply-policy-config; } // container config container state { config false; description "Operational state for routing policy"; uses apply-policy-config; uses apply-policy-state; } // container state } // container apply-policy } // grouping apply-policy-group uses routing-policy-top; } // module openconfig-routing-policy
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