Network Working Group X. Liu Internet-Draft Jabil Intended status: Standards Track Y. Qu Expires: August 23, 2017 Futurewei Technologies, Inc. A. Lindem Cisco Systems C. Hopps Deutsche Telekom L. Berger LabN Consulting, L.L.C. February 19, 2017 Routing Area Common YANG Data Types draft-ietf-rtgwg-routing-types-01 Abstract This document defines a collection of common data types using the YANG data modeling language. These derived common types are designed to be imported by other modules defined in the routing area. Status of This Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at http://datatracker.ietf.org/drafts/current/. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." This Internet-Draft will expire on August 23, 2017. Copyright Notice Copyright (c) 2017 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents Liu, et al. Expires August 23, 2017 [Page 1] Internet-Draft Routing Types YANG February 2017 carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1. Requirements Language . . . . . . . . . . . . . . . . . . 2 1.2. Terminology . . . . . . . . . . . . . . . . . . . . . . . 2 2. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3. YANG Module . . . . . . . . . . . . . . . . . . . . . . . . . 5 4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 20 5. Security Considerations . . . . . . . . . . . . . . . . . . . 21 6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 21 7. References . . . . . . . . . . . . . . . . . . . . . . . . . 21 7.1. Normative References . . . . . . . . . . . . . . . . . . 21 7.2. Informative References . . . . . . . . . . . . . . . . . 22 7.3. URIs . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 24 1. Introduction The YANG [RFC6020] [RFC7950] is a data modeling language used to model configuration data, state data, Remote Procedure Calls, and notifications for network management protocols. The YANG language supports a small set of built-in data types and provides mechanisms to derive other types from the built-in types. This document introduces a collection of common data types derived from the built-in YANG data types. The derived types are designed to be the common types applicable for modeling in the routing area. 1.1. Requirements Language The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY" and "OPTIONAL" in this document are to be interpreted as described in BCP 14, RFC 2119 [RFC2119]. 1.2. Terminology The terminology for describing YANG data models is found in [RFC7950]. Liu, et al. Expires August 23, 2017 [Page 2] Internet-Draft Routing Types YANG February 2017 2. Overview This document defines the following data types: router-id Router Identifiers are commonly used to identify a nodes in routing and other control plane protocols. An example usage of router-id can be found in [I-D.ietf-ospf-yang]. address-family This type defines values for use in address family identifiers. The values are based on the IANA Address Family Numbers Registry [1]. An example usage can be found in [I-D.ietf-idr-bgp-model]. route-target Route Targets (RTs) are commonly used to control the distribution of virtual routing and forwarding (VRF) information, see [RFC4364], in support of virtual private networks (VPNs). An example usage can be found in [I-D.ietf-bess-l2vpn-yang]. route-target-type This type defines the import and export rules of Route Targets, as descibed in Section 4.3.1 of [RFC4364]. An example usage can be found in [I-D.ietf-idr-bgp-model]. route-distinguisher Route Distinguishers (RDs) are commonly used to identify separate routes in support of virtual private networks (VPNs). For example, in [RFC4364], RDs are commonly used to identify independent VPNs and VRFs, and more generally, to identify multiple routes to the same prefix. An example usage can be found in [I-D.ietf-idr-bgp-model]. ipv4-multicast-group-address This type defines the representation of an IPv4 multicast group address, which is in the range from 224.0.0.0 to 239.255.255.255. An example usage can be found in [I-D.ietf-pim-yang]. ipv6-multicast-group-address This type defines the representation of an IPv6 multicast group address, which is in the range of FF00::/8. An example usage can be found in [I-D.ietf-pim-yang]. ip-multicast-group-address This type represents an IP multicast group address and is IP version neutral. The format of the textual representation implies the IP version. An example usage can be found in [I-D.ietf-pim-yang]. Liu, et al. Expires August 23, 2017 [Page 3] Internet-Draft Routing Types YANG February 2017 ipv4-multicast-source-address IPv4 source address type for use in multicast control protocols. This type also allows the indication of wildcard sources, i.e., "*". An example of where this type may/will be used is [I-D.ietf-pim-yang]. ipv6-multicast-source-address IPv6 source address type for use in multicast control protocols. This type also allows the indication of wildcard sources, i.e., "*". An example of where this type may/will be used is [I-D.ietf-pim-yang]. ieee-bandwidth Bandwidth in IEEE 754 floating point 32-bit binary format [IEEE754]. Commonly used in Traffic Engineering control plane protocols. An example of where this type may/will be used is [I-D.ietf-ospf-yang]. link-access-type This type identifies the IGP link type. An example of where this type may/will be used is [I-D.ietf-ospf-yang]. timer-multiplier This type is used in conjunction with a timer-value type. It is generally used to indicate define the number of timer-value intervals that may expire before a specific event must occur. Examples of this include the arrival of any BFD packets, see [RFC5880] Section 6.8.4, or hello_interval in [RFC3209]. Example of where this type may/will be used is [I-D.ietf-idr-bgp-model] and [I-D.ietf-teas-yang-rsvp]. timer-value-seconds16 This type covers timers which can be set in seconds, not set, or set to infinity. This type supports a range of values that can be represented in a uint16 (2 octets). An example of where this type may/will be used is [I-D.ietf-ospf-yang]. timer-value-seconds32 This type covers timers which can be set in seconds, not set, or set to infinity. This type supports a range of values that can be represented in a uint32 (4 octets). An example of where this type may/will be used is [I-D.ietf-teas-yang-rsvp]. timer-value-milliseconds This type covers timers which can be set in milliseconds, not set, or set to infinity. This type supports a range of values that can be represented in a uint32 (4 octets). Examples of where this Liu, et al. Expires August 23, 2017 [Page 4] Internet-Draft Routing Types YANG February 2017 type may/will be used include [I-D.ietf-teas-yang-rsvp] and [I-D.ietf-bfd-yang]. generalized-label This type represents a generalized label for Generalized Multi- Protocol Label Switching (GMPLS) [RFC3471]. The Generalized Label does not identify its type, which is known from the context. An example usage can be found in [I-D.ietf-teas-yang-te]. mpls-label-special-purpose This type represents the special-purpose Multiprotocol Label Switching (MPLS) label values [RFC7274]. An example usage can be found in [I-D.ietf-mpls-base-yang]. mpls-label-general-use The 20 bits label values in an MPLS label stack entry, specified in [RFC3032]. This label value does not include the encodings of Traffic Class and TTL (time to live). The label range specified by this type is for general use, with special-purpose MPLS label values excluded. An example usage can be found in [I-D.ietf-mpls-base-yang]. mpls-label The 20 bits label values in an MPLS label stack entry, specified in [RFC3032]. This label value does not include the encodings of Traffic Class and TTL (time to live). The label range specified by this type covers the general use values and the special-purpose label values. An example usage can be found in [I-D.ietf-mpls-base-yang]. This document defines the following YANG groupings: mpls-label-stack This grouping defines a reusable collection of schema nodes representing an MPLS label stack [RFC3032]. An example usage can be found in [I-D.ietf-mpls-base-yang]. vpn-route-target-rules This grouping defines a reusable collection of schema nodes representing Route Target import-export rules used in the BGP enabled Virtual Private Networks (VPNs). [RFC4364][RFC4664]. An example usage can be found in [I-D.ietf-bess-l2vpn-yang]. 3. YANG Module file "ietf-routing-types@2017-02-19.yang" module ietf-routing-types { Liu, et al. Expires August 23, 2017 [Page 5] Internet-Draft Routing Types YANG February 2017 namespace "urn:ietf:params:xml:ns:yang:ietf-routing-types"; prefix "rt-types"; import ietf-yang-types { prefix "yang"; } import ietf-inet-types { prefix "inet"; } organization "IETF Routing Area Working Group (rtgwg)"; contact "Routing Area Working Group - "; description "This module contains a collection of YANG data types considered generally useful for routing protocols."; revision 2017-02-19 { description "Initial revision."; reference "RFC TBD: Routing YANG Data Types"; } /*** collection of types related to routing ***/ typedef router-id { type yang:dotted-quad; description "A 32-bit number in the dotted quad format assigned to each router. This number uniquely identifies the router within an Autonomous System."; } // address-family identity address-family { description "Base identity from which identities describing address families are derived."; } identity ipv4 { base address-family; description "This identity represents IPv4 address family."; } Liu, et al. Expires August 23, 2017 [Page 6] Internet-Draft Routing Types YANG February 2017 identity ipv6 { base address-family; description "This identity represents IPv6 address family."; } //The rest of the values deinfed in the IANA registry identity nsap { base address-family; description "Address family from IANA registry."; } identity hdlc { base address-family; description "(8-bit multidrop) Address family from IANA registry."; } identity bbn1822 { base address-family; description "AHIP (BBN report #1822) Address family from IANA registry."; } identity ieee802 { base address-family; description "(includes all 802 media plus Ethernet canonical format) Address family from IANA registry."; } identity e163 { base address-family; description "Address family from IANA registry."; } identity e164 { base address-family; description "SMDS, Frame Relay, ATM Address family from IANA registry."; } identity f69 { base address-family; description "(Telex) Address family from IANA registry."; } Liu, et al. Expires August 23, 2017 [Page 7] Internet-Draft Routing Types YANG February 2017 identity x121 { base address-family; description "(X.25, Frame Relay) Address family from IANA registry."; } identity ipx { base address-family; description "Address family from IANA registry."; } identity appletalk { base address-family; description "Address family from IANA registry."; } identity decnet-iv { base address-family; description "Decnet IV Address family from IANA registry."; } identity vines { base address-family; description "Banyan Vines Address family from IANA registry."; } identity e164-nsap { base address-family; description "E.164 with NSAP format subaddress Address family from IANA registry."; } identity dns { base address-family; description "Domain Name System Address family from IANA registry."; } identity dn { base address-family; description "Distinguished Name Address family from IANA registry."; } identity as-num { base address-family; Liu, et al. Expires August 23, 2017 [Page 8] Internet-Draft Routing Types YANG February 2017 description "AS Number Address family from IANA registry."; } identity xtp-v4 { base address-family; description "XTP over IPv4 Address family from IANA registry."; } identity xtp-v6 { base address-family; description "XTP over IPv6 Address family from IANA registry."; } identity xtp { base address-family; description "XTP native mode XTP Address family from IANA registry."; } identity fc-port { base address-family; description "Fibre Channel World-Wide Port Name Address family from IANA registry."; } identity fc-node { base address-family; description "Fibre Channel World-Wide Node Name Address family from IANA registry."; } identity gwid { base address-family; description "Address family from IANA registry."; } identity l2vpn { base address-family; description "Address family from IANA registry."; } identity mpls-tp-section-eid { base address-family; description "MPLS-TP Section Endpoint Identifier Liu, et al. Expires August 23, 2017 [Page 9] Internet-Draft Routing Types YANG February 2017 Address family from IANA registry."; } identity mpls-tp-lsp-eid { base address-family; description "MPLS-TP LSP Endpoint Identifier Address family from IANA registry."; } identity mpls-tp-pwe-eid { base address-family; description "MPLS-TP Pseudowire Endpoint Identifier Address family from IANA registry."; } identity mt-v4 { base address-family; description "Multi-Topology IPv4. Address family from IANA registry."; } identity mt-v6 { base address-family; description "Multi-Topology IPv6. Address family from IANA registry."; } /*** collection of types related to VPN ***/ typedef route-target { type string { pattern '(0:(6553[0-5]|655[0-2]\d|65[0-4]\d{2}|6[0-4]\d{3}|' + '[0-5]?\d{0,3}\d):(429496729[0-5]|42949672[0-8]\d|' + '4294967[01]\d{2}|429496[0-6]\d{3}|42949[0-5]\d{4}|' + '4294[0-8]\d{5}|429[0-3]\d{6}|42[0-8]\d{7}|4[01]\d{8}|' + '[0-3]?\d{0,8}\d))|' + '(1:(((\d|[1-9]\d|1\d{2}|2[0-4]\d|25[0-5])\.){3}(\d|[1-9]\d|' + '1\d{2}|2[0-4]\d|25[0-5])):(6553[0-5]|655[0-2]\d|' + '65[0-4]\d{2}|6[0-4]\d{3}|[0-5]?\d{0,3}\d))|' + '(2:(429496729[0-5]|42949672[0-8]\d|4294967[01]\d{2}|' + '429496[0-6]\d{3}|42949[0-5]\d{4}|4294[0-8]\d{5}|' + '429[0-3]\d{6}|42[0-8]\d{7}|4[01]\d{8}|[0-3]?\d{0,8}\d):' + '(6553[0-5]|655[0-2]\d|65[0-4]\d{2}|6[0-4]\d{3}|' + '[0-5]?\d{0,3}\d))'; } description "A route target is an 8-octet BGP extended community initially identifying a set of sites in a BGP Liu, et al. Expires August 23, 2017 [Page 10] Internet-Draft Routing Types YANG February 2017 VPN (RFC 4364). However, it has since taken on a more general role in BGP route filtering. A route target consists of three fields: a 2-octet type field, an administrator field, and an assigned number field. According to the data formats for type 0, 1, and 2 defined in RFC4360 and RFC5668, the encoding pattern is defined as: 0:2-octet-asn:4-octet-number 1:4-octet-ipv4addr:2-octet-number 2:4-octet-asn:2-octet-number. Some valid examples are: 0:100:100, 1:1.1.1.1:100, and 2:1234567890:203."; reference "RFC4360: BGP Extended Communities Attribute. RFC5668: 4-Octet AS Specific BGP Extended Community."; } typedef route-target-type { type enumeration { enum "import" { value "0"; description "The route target applies to route import."; } enum "export" { value "1"; description "The route target applies to route export."; } enum "both" { value "2"; description "The route target applies to both route import and route export."; } } description "Indicates the role a route target takes in route filtering."; reference "RFC4364: BGP/MPLS IP Virtual Private Networks (VPNs)."; } typedef route-distinguisher { type string { pattern Liu, et al. Expires August 23, 2017 [Page 11] Internet-Draft Routing Types YANG February 2017 '(0:(6553[0-5]|655[0-2]\d|65[0-4]\d{2}|6[0-4]\d{3}|' + '[0-5]?\d{0,3}\d):(429496729[0-5]|42949672[0-8]\d|' + '4294967[01]\d{2}|429496[0-6]\d{3}|42949[0-5]\d{4}|' + '4294[0-8]\d{5}|429[0-3]\d{6}|42[0-8]\d{7}|4[01]\d{8}|' + '[0-3]?\d{0,8}\d))|' + '(1:(((\d|[1-9]\d|1\d{2}|2[0-4]\d|25[0-5])\.){3}(\d|[1-9]\d|' + '1\d{2}|2[0-4]\d|25[0-5])):(6553[0-5]|655[0-2]\d|' + '65[0-4]\d{2}|6[0-4]\d{3}|[0-5]?\d{0,3}\d))|' + '(2:(429496729[0-5]|42949672[0-8]\d|4294967[01]\d{2}|' + '429496[0-6]\d{3}|42949[0-5]\d{4}|4294[0-8]\d{5}|' + '429[0-3]\d{6}|42[0-8]\d{7}|4[01]\d{8}|[0-3]?\d{0,8}\d):' + '(6553[0-5]|655[0-2]\d|65[0-4]\d{2}|6[0-4]\d{3}|' + '[0-5]?\d{0,3}\d))|' + '(([3-9a-fA-F]|[1-9a-fA-F][\da-fA-F]{1,3}):' + '[\da-fA-F]{1,12})'; } description "A route distinguisher is an 8-octet value used to distinguish routes from different BGP VPNs (RFC 4364). A route distinguisher consists of three fields: A 2-octet type field, an administrator field, and an assigned number field. According to the data formats for type 0, 1, and 2 defined in RFC4364, the encoding pattern is defined as: 0:2-octet-asn:4-octet-number 1:4-octet-ipv4addr:2-octet-number 2:4-octet-asn:2-octet-number. 2-octet-other-hex-number:6-octet-hex-number Some valid examples are: 0:100:100, 1:1.1.1.1:100, and 2:1234567890:203."; reference "RFC4364: BGP/MPLS IP Virtual Private Networks (VPNs)."; } /*** collection of types common to multicast ***/ typedef ipv4-multicast-group-address { type inet:ipv4-address { pattern '(2((2[4-9])|(3[0-9]))\.).*'; } description "This type represents an IPv4 multicast group address, which is in the range from 224.0.0.0 to 239.255.255.255."; reference "RFC1112: Host Extensions for IP Multicasting."; } typedef ipv6-multicast-group-address { Liu, et al. Expires August 23, 2017 [Page 12] Internet-Draft Routing Types YANG February 2017 type inet:ipv6-address { pattern '(([fF]{2}[0-9a-fA-F]{2}):).*'; } description "This type represents an IPv6 multicast group address, which is in the range of FF00::/8."; reference "RFC4291: IP Version 6 Addressing Architecture. Sec 2.7. RFC7346: IPv6 Multicast Address Scopes."; } typedef ip-multicast-group-address { type union { type ipv4-multicast-group-address; type ipv6-multicast-group-address; } description "This type represents an IP multicast group address and is IP version neutral. The format of the textual representation implies the IP version."; } typedef ipv4-multicast-source-address { type union { type enumeration { enum '*' { description "Any source address."; } } type inet:ipv4-address; } description "Multicast source IPv4 address type."; } typedef ipv6-multicast-source-address { type union { type enumeration { enum '*' { description "Any source address."; } } type inet:ipv6-address; } description Liu, et al. Expires August 23, 2017 [Page 13] Internet-Draft Routing Types YANG February 2017 "Multicast source IPv6 address type."; } /*** collection of types common to protocols ***/ typedef ieee-bandwidth { type string { pattern '0[xX](0((\.0?)?[pP](\+)?0?|(\.0?))|' + '1(\.([\da-fA-F]{0,5}[02468aAcCeE]?)?)?[pP](\+)?(12[0-7]|' + '1[01]\d|0?\d?\d)?)|0[xX][\da-fA-F]{1,8}'; } description "Bandwidth in IEEE 754 floating point 32-bit binary format: (-1)**(S) * 2**(Exponent-127) * (1 + Fraction), where Exponent uses 8 bits, and Fraction uses 23 bits. The units are octets per second. The encoding format is the external hexadecimal-significand character sequences specified in IEEE 754 and C99, restricted to be normalized, non-negative, and non-fraction: 0x1.hhhhhhp{+}d or 0X1.HHHHHHP{+}D where 'h' and 'H' are hexadecimal digits, 'd' and 'D' are integers in the range of [0..127]. When six hexadecimal digits are used for 'hhhhhh' or 'HHHHHH', the least significant digit must be an even number. 'x' and 'X' indicate hexadecimal; 'p' and 'P' indicate power of two. Some examples are: 0x0p0, 0x1p10, and 0x1.abcde2p+20"; reference "IEEE Std 754-2008: IEEE Standard for Floating-Point Arithmetic."; } typedef link-access-type { type enumeration { enum "broadcast" { description "Specify broadcast multi-access network."; } enum "non-broadcast-multiaccess" { description "Specify Non-Broadcast Multi-Access (NBMA) network."; } enum "point-to-multipoint" { description "Specify point-to-multipoint network."; } enum "point-to-point" { description Liu, et al. Expires August 23, 2017 [Page 14] Internet-Draft Routing Types YANG February 2017 "Specify point-to-point network."; } } description "Link access type."; } typedef timer-multiplier { type uint8; description "The number of timer value intervals that should be interpreted as a failure."; } typedef timer-value-seconds16 { type union { type uint16 { range "1..65535"; } type enumeration { enum "infinity" { description "The timer is set to infinity."; } enum "not-set" { description "The timer is not set."; } } } units seconds; description "Timer value type, in seconds (16 bit range)."; } typedef timer-value-seconds32 { type union { type uint32 { range "1..4294967295"; } type enumeration { enum "infinity" { description "The timer is set to infinity."; } enum "not-set" { description "The timer is not set."; } } } units seconds; description "Timer value type, in seconds (32 bit range)."; Liu, et al. Expires August 23, 2017 [Page 15] Internet-Draft Routing Types YANG February 2017 } typedef timer-value-milliseconds { type union { type uint32{ range "1..4294967295"; } type enumeration { enum "infinity" { description "The timer is set to infinity."; } enum "not-set" { description "The timer is not set."; } } } units milliseconds; description "Timer value type, in milliseconds."; } /*** collection of types related to MPLS/GMPLS ***/ typedef generalized-label { type binary; description "Generalized label. Nodes sending and receiving the Generalized Label know the kinds of link they are using. Hence, the Generalized Label does not identify its type. Instead, nodes are expected to know from the context and type of label to expect."; reference "RFC3471: Section 3.2"; } identity mpls-label-special-purpose-value { description "Base identity for deriving identities describing special-purpose Multiprotocol Label Switching (MPLS) label values."; reference "RFC7274: Allocating and Retiring Special-Purpose MPLS Labels."; } identity ipv4-explicit-null-label { base mpls-label-special-purpose-value; description "This identity represents the IPv4 Explicit NULL Label."; reference "RFC3032: MPLS Label Stack Encoding. Section 2.1."; Liu, et al. Expires August 23, 2017 [Page 16] Internet-Draft Routing Types YANG February 2017 } identity router-alert-label { base mpls-label-special-purpose-value; description "This identity represents the Router Alert Label."; reference "RFC3032: MPLS Label Stack Encoding. Section 2.1."; } identity ipv6-explicit-null-label { base mpls-label-special-purpose-value; description "This identity represents the IPv6 Explicit NULL Label."; reference "RFC3032: MPLS Label Stack Encoding. Section 2.1."; } identity implicit-null-label { base mpls-label-special-purpose-value; description "This identity represents the Implicit NULL Label."; reference "RFC3032: MPLS Label Stack Encoding. Section 2.1."; } identity entropy-label-indicator { base mpls-label-special-purpose-value; description "This identity represents the Entropy Label Indicator."; reference "RFC6790: The Use of Entropy Labels in MPLS Forwarding. Sections 3 and 10.1."; } identity gal-label { base mpls-label-special-purpose-value; description "This identity represents the Generic Associated Channel Label (GAL)."; reference "RFC5586: MPLS Generic Associated Channel. Sections 4 and 10."; } identity oam-alert-label { base mpls-label-special-purpose-value; description Liu, et al. Expires August 23, 2017 [Page 17] Internet-Draft Routing Types YANG February 2017 "This identity represents the OAM Alert Label."; reference "RFC3429: Assignment of the 'OAM Alert Label' for Multiprotocol Label Switching Architecture (MPLS) Operation and Maintenance (OAM) Functions. Sections 3 and 6."; } identity extension-label { base mpls-label-special-purpose-value; description "This identity represents the Extension Label."; reference "RFC7274: Allocating and Retiring Special-Purpose MPLS Labels. Sections 3.1 and 5."; } typedef mpls-label-special-purpose { type identityref { base mpls-label-special-purpose-value; } description "This type represents the special-purpose Multiprotocol Label Switching (MPLS) label values."; reference "RFC3032: MPLS Label Stack Encoding. RFC7274: Allocating and Retiring Special-Purpose MPLS Labels."; } typedef mpls-label-general-use { type uint32 { range "16..1048575"; } description "The 20 bits label values in an MPLS label stack entry, specified in RFC3032. This label value does not include the encodings of Traffic Class and TTL (time to live). The label range specified by this type is for general use, with special-purpose MPLS label values excluded."; reference "RFC3032: MPLS Label Stack Encoding."; } typedef mpls-label { type union { type mpls-label-special-purpose; type mpls-label-general-use; Liu, et al. Expires August 23, 2017 [Page 18] Internet-Draft Routing Types YANG February 2017 } description "The 20 bits label values in an MPLS label stack entry, specified in RFC3032. This label value does not include the encodings of Traffic Class and TTL (time to live)."; reference "RFC3032: MPLS Label Stack Encoding."; } /* * Groupings */ grouping mpls-label-stack { description "A grouping that specifies an MPLS label stack."; container mpls-label-stack { description "Container for a list of MPLS label stack entries."; list entry { key "id"; description "List of MPLS label stack entries."; leaf id { type uint8; description "Identifies the sequence of an MPLS label stack entries. An entry with smaller ID value is precedes an entry in the label stack with a smaller ID."; } leaf label { type rt-types:mpls-label; description "Label value."; } leaf ttl { type uint8; description "Time to Live (TTL)."; reference "RFC3032: MPLS Label Stack Encoding."; } leaf traffic-class { type uint8 { range "0..7"; } description "Traffic Class (TC)."; reference Liu, et al. Expires August 23, 2017 [Page 19] Internet-Draft Routing Types YANG February 2017 "RFC5462: Multiprotocol Label Switching (MPLS) Label Stack Entry: 'EXP' Field Renamed to 'Traffic Class' Field."; } } } } // mpls-label-stack grouping vpn-route-targets { description "A grouping that specifies Route Target import-export rules used in the BGP enabled Virtual Private Networks (VPNs)."; reference "RFC4364: BGP/MPLS IP Virtual Private Networks (VPNs). RFC4664: Framework for Layer 2 Virtual Private Networks (L2VPNs)"; list vpn-target { key route-target; description "List of Route Targets."; leaf route-target { type rt-types:route-target; description "Route Target value"; } leaf route-target-type { type rt-types:route-target-type; mandatory true; description "Import/export type of the Route Target."; } } } // vpn-route-targets } 4. IANA Considerations RFC Ed.: In this section, replace all occurrences of 'XXXX' with the actual RFC number (and remove this note). This document registers the following namespace URIs in the IETF XML registry [RFC3688]: Liu, et al. Expires August 23, 2017 [Page 20] Internet-Draft Routing Types YANG February 2017 -------------------------------------------------------------------- URI: urn:ietf:params:xml:ns:yang:ietf-routing-types Registrant Contact: The IESG. XML: N/A, the requested URI is an XML namespace. -------------------------------------------------------------------- This document registers the following YANG modules in the YANG Module Names registry [RFC6020]: -------------------------------------------------------------------- name: ietf-routing-types namespace: urn:ietf:params:xml:ns:yang:ietf-routing-types prefix: rt-types reference: RFC XXXX -------------------------------------------------------------------- 5. Security Considerations This document defines common data types using the YANG data modeling language. The definitions themselves have no security impact on the Internet, but the usage of these definitions in concrete YANG modules might have. The security considerations spelled out in the YANG specification [RFC7950] apply for this document as well. 6. Acknowledgements The Routing Area Yang Architecture design team members included Acee Lindem, Anees Shaikh, Christian Hopps, Dean Bogdanovic, Ebben Aries, Lou Berger, Qin Wu, Rob Shakir, Xufeng Liu, and Yingzhen Qu. 7. References 7.1. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, . [RFC6020] Bjorklund, M., Ed., "YANG - A Data Modeling Language for the Network Configuration Protocol (NETCONF)", RFC 6020, DOI 10.17487/RFC6020, October 2010, . [RFC7950] Bjorklund, M., Ed., "The YANG 1.1 Data Modeling Language", RFC 7950, DOI 10.17487/RFC7950, August 2016, . Liu, et al. Expires August 23, 2017 [Page 21] Internet-Draft Routing Types YANG February 2017 7.2. Informative References [IEEE754] IEEE, "IEEE Standard for Floating-Point Arithmetic", IEEE Std 754-2008, August 2008. [I-D.ietf-bfd-yang] Zheng, L., Rahman, R., Networks, J., Jethanandani, M., and G. Mirsky, "Yang Data Model for Bidirectional Forwarding Detection (BFD)", draft-ietf-bfd-yang-04 (work in progress), January 2017. [I-D.ietf-idr-bgp-model] Shaikh, A., Shakir, R., Patel, K., Hares, S., D'Souza, K., Bansal, D., Clemm, A., Zhdankin, A., Jethanandani, M., and X. Liu, "BGP Model for Service Provider Networks", draft- ietf-idr-bgp-model-02 (work in progress), July 2016. [I-D.ietf-ospf-yang] Yeung, D., Qu, Y., Zhang, Z., Chen, I., and A. Lindem, "Yang Data Model for OSPF Protocol", draft-ietf-ospf- yang-06 (work in progress), October 2016. [I-D.ietf-pim-yang] Liu, X., McAllister, P., Peter, A., Sivakumar, M., Liu, Y., and f. hu, "A YANG data model for Protocol-Independent Multicast (PIM)", draft-ietf-pim-yang-03 (work in progress), October 2016. [I-D.ietf-teas-yang-rsvp] Beeram, V., Saad, T., Gandhi, R., Liu, X., Shah, H., Chen, X., Jones, R., and B. Wen, "A YANG Data Model for Resource Reservation Protocol (RSVP)", draft-ietf-teas-yang-rsvp-06 (work in progress), October 2016. [I-D.ietf-teas-yang-te] Saad, T., Gandhi, R., Liu, X., Beeram, V., Shah, H., Bryskin, I., Chen, X., Jones, R., and B. Wen, "A YANG Data Model for Traffic Engineering Tunnels and Interfaces", draft-ietf-teas-yang-te-05 (work in progress), October 2016. [I-D.ietf-bess-l2vpn-yang] Shah, H., Brissette, P., Chen, I., Hussain, I., and B. Wen, "YANG Data Model for MPLS-based L2VPN", draft-ietf- bess-l2vpn-yang-02 (work in progress), October 2016. Liu, et al. Expires August 23, 2017 [Page 22] Internet-Draft Routing Types YANG February 2017 [I-D.ietf-mpls-base-yang] Raza, K., Gandhi, R., Liu, X., Beeram, V., Saad, T., Bryskin, I., Chen, X., Jones, R., and B. Wen, "A YANG Data Model for MPLS Base", draft-ietf-mpls-base-yang-01 (work in progress), July 2016. [RFC3032] Rosen, E., Tappan, D., Fedorkow, G., Rekhter, Y., Farinacci, D., Li, T., and A. Conta, "MPLS Label Stack Encoding", RFC 3032, DOI 10.17487/RFC3032, January 2001, . [RFC3209] Awduche, D., Berger, L., Gan, D., Li, T., Srinivasan, V., and G. Swallow, "RSVP-TE: Extensions to RSVP for LSP Tunnels", RFC 3209, DOI 10.17487/RFC3209, December 2001, . [RFC3471] Berger, L., Ed., "Generalized Multi-Protocol Label Switching (GMPLS) Signaling Functional Description", RFC 3471, DOI 10.17487/RFC3471, January 2003, . [RFC4364] Rosen, E. and Y. Rekhter, "BGP/MPLS IP Virtual Private Networks (VPNs)", RFC 4364, DOI 10.17487/RFC4364, February 2006, . [RFC4664] Andersson, L., Ed. and E. Rosen, Ed., "Framework for Layer 2 Virtual Private Networks (L2VPNs)", RFC 4664, DOI 10.17487/RFC4664, September 2006, . [RFC5880] Katz, D. and D. Ward, "Bidirectional Forwarding Detection (BFD)", RFC 5880, DOI 10.17487/RFC5880, June 2010, . [RFC7274] Kompella, K., Andersson, L., and A. Farrel, "Allocating and Retiring Special-Purpose MPLS Labels", RFC 7274, DOI 10.17487/RFC7274, June 2014, . 7.3. URIs [1] http://www.iana.org/assignments/address-family-numbers/address- family-numbers.xhtml Liu, et al. Expires August 23, 2017 [Page 23] Internet-Draft Routing Types YANG February 2017 Authors' Addresses Xufeng Liu Jabil 8281 Greensboro Drive, Suite 200 McLean VA 22102 USA EMail: Xufeng_Liu@jabil.com Yingzhen Qu Futurewei Technologies, Inc. 2330 Central Expressway Santa Clara CA 95050 USA EMail: yingzhen.qu@huawei.com Acee Lindem Cisco Systems 301 Midenhall Way Cary, NC 27513 USA EMail: acee@cisco.com Christian Hopps Deutsche Telekom EMail: chopps@chopps.org Lou Berger LabN Consulting, L.L.C. EMail: lberger@labn.net Liu, et al. Expires August 23, 2017 [Page 24]