Network Working Group Y. Liu Internet Draft A. Foldes Intended status: Proposed Standard Ericsson G. Zheng Z. Wang Y. Zhuang Huawei Technologies Expires: April 15, 2016 Oct 15, 2015 Yang Data Model for IPIPv4 Tunnel draft-liu-intarea-ipipv4-tunnel-yang-00.txt 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 April 15, 2016. Copyright Notice Copyright (c) 2015 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 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. Abstract Liu Expires April 15, 2016 [Page 1] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 This document defines a YANG data model for the management of IPv4 or IPv6 over IPv4 tunnels. The data model covers configuration data, operational state data and RPC execution commands. Table of Contents 1. Introduction...................................................2 1.1. Terminology...............................................2 1.2. Tree Diagrams.............................................3 2. IPv4 Tunnel Model [01].........................................3 2.1. Data Model................................................3 2.2. YANG Model................................................7 3. IPv4 Tunnel Model [02]........................................22 3.1. Data Model...............................................22 3.2. YANG Model...............................................24 4. Security Considerations.......................................38 5. IANA Considerations...........................................38 6. Acknowledgements..............................................38 7. References....................................................38 7.1. Normative References.....................................38 7.2. Informative References...................................38 1. Introduction This document defines two options for the YANG [RFC6020] data model for the management of IPv6/4-in-IPv4 tunnels. The two options will be discussed in IETF WG, only one of them will be final solution. It covers the following tunnel types. o IPv4 in IPv4, related concepts are defined in [RFC1853] o IPv6 in IPv4 manual tunnel, related concepts are defined in [RFC2003] o IPv6 to IPv4 tunnel, related concepts are defined in [RFC3056] The model option 1 is about using separate resource pool for different types of tunnels. The model option 2 is about use one resource pool for all the types of tunnels which are listed in this document. 1.1. Terminology The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in [RFC2119]. Liu Expires April 15, 2016 [Page 2] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 1.2. Tree Diagrams A simplified graphical representation of the data model is used in this document. The meaning of the symbols in these diagrams is as follows: o Brackets "[" and "]" enclose list keys. o Abbreviations before data node names: "rw" means configuration (read-write), and "ro" means state data (read-only). o Symbols after data node names: "?" means an optional node, "!" means a presence container, and "*" denotes a list and leaf-list. o Parentheses enclose choice and case nodes, and case nodes are also marked with a colon (":"). o Ellipsis ("...") stands for contents of subtrees that are not shown. 2. IPv4 Tunnel Model [01] This document defines two options for the YANG model "ietf-ipipv4- tunnel". Each of them includes two modules, one for configuration and one for state. This section lists the first option. 2.1. Data Model The data model has the following tree diagram for the IPv4 tunnels: module: ietf-ipipv4-tunnel +--rw tunnels | +--rw ip-in-ip* [name] | | +--rw name string | | +--rw description? string | | +--rw bind-interface? if:interface-ref | | +--rw clear-df? empty | | +--rw shutdown? empty | | +--rw tmtu? uint16 Liu Expires April 15, 2016 [Page 3] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 | | +--rw mirror-destination? string | | +--rw hop-limit? uint8 | | +--rw tos? int8 | | +--rw peer-end-point | | +--rw local? inet:ipv4-address-no-zone | | +--rw remote? inet:ipv4-address-no-zone | | +--rw routing-instance? rt:routing-instance-ref | +--rw ipv6to4* [name] | | +--rw name string | | +--rw description? string | | +--rw bind-interface? if:interface-ref | | +--rw clear-df? empty | | +--rw shutdown? empty | | +--rw tmtu? uint16 | | +--rw mirror-destination? string | | +--rw hop-limit? uint8 | | +--rw tos? int8 | | +--rw peer-end-point | | +--rw local? inet:ipv4-address-no-zone | +--rw ipv6v4-manual* [name] | +--rw name string | +--rw description? string | +--rw bind-interface? if:interface-ref | +--rw clear-df? empty Liu Expires April 15, 2016 [Page 4] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 | +--rw shutdown? empty | +--rw tmtu? uint16 | +--rw mirror-destination? string | +--rw hop-limit? uint8 | +--rw tos? int8 | +--rw peer-end-point | +--rw local? inet:ipv4-address-no-zone | +--rw remote? inet:ipv4-address-no-zone | +--rw routing-instance? rt:routing-instance-ref +--ro tunnel-state +--ro ip-in-ip* | +--ro name? string | +--ro local-ip? inet:ipv4-address-no-zone | +--ro remote-ip? inet:ipv4-address-no-zone | +--ro state? enumeration | +--ro bind-interface? if:interface-state-ref | +--ro user-configured? boolean | +--ro routing-instance? rt:routing-instance-ref | +--ro tmtu? uint16 | +--ro clear-df? empty | +--ro down-reason? string | +--ro resolved-interface-name? string | +--ro hop-limit? uint32 | +--ro tos? int32 Liu Expires April 15, 2016 [Page 5] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 +--ro ipv6to4* | +--ro name? string | +--ro local-ip? inet:ipv4-address-no-zone | +--ro remote-ip? inet:ipv4-address-no-zone | +--ro state? enumeration | +--ro bind-interface? if:interface-state-ref | +--ro user-configured? boolean | +--ro routing-instance? rt:routing-instance-ref | +--ro tmtu? uint16 | +--ro clear-df? empty | +--ro down-reason? string | +--ro resolved-interface-name? string | +--ro hop-limit? uint32 | +--ro tos? int32 +--ro ipv6v4-manual* +--ro name? string +--ro local-ip? inet:ipv4-address-no-zone +--ro remote-ip? inet:ipv4-address-no-zone +--ro state? enumeration +--ro bind-interface? if:interface-state-ref +--ro user-configured? boolean +--ro routing-instance? rt:routing-instance-ref +--ro tmtu? uint16 +--ro clear-df? empty Liu Expires April 15, 2016 [Page 6] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 +--ro down-reason? string +--ro resolved-interface-name? string +--ro hop-limit? uint32 +--ro tos? int32 augment /if:interfaces-state/if:interface: +--ro tunnel-protocol? tunnel-type 2.2. YANG Model module ietf-ipipv4-tunnel { namespace "urn:ietf:params:xml:ns:yang:ietf-ipipv4-tunnel"; prefix "v4tln"; import ietf-interfaces { prefix "if"; } import ietf-inet-types { prefix inet; } import ietf-routing { prefix "rt"; } Liu Expires April 15, 2016 [Page 7] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 organization "IETF NETMOD (NETCONF Data Modeling Language) Working Group."; contact "Mandy.Liu@ericsson.com Adam.Foldes@ericsson.com zhengguangying@huawei.com"; description "This YANG model defines the configuration data and operational state data for generic IPv4/6-in-IPv4 tunnel. It includes the IPv4 in IPv4, IPv6 to IPv4 auto and IPv6 over IPv4 manual tunnels."; revision 2015-10-14 { description "Update model based on comments."; reference "RFC XXXX: A YANG Data Model for IPv4 Tunnel."; } revision 2015-07-20 { Liu Expires April 15, 2016 [Page 8] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 description "This version adds the following new items: - hop-limit - tos - tunnel-type This version changes 'ipv6to4-auto' to 'ipv6to4'"; reference "RFC XXXX: A YANG Data Model for IPv4 Tunnel."; } revision 2015-05-27 { description "Initial revision."; reference "RFC XXXX: A YANG Data Model for IPv4 Tunnel."; } /* Typedefs */ typedef tunnel-type { type enumeration { enum ip-ip { description "IPv4-in-IPv4 tunnel interface."; } Liu Expires April 15, 2016 [Page 9] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 enum ipv6v4-manual { description "IPv6v4-manual tunnel interface."; } enum ipv6to4 { description "The 6to4 tunnel interface."; } } description "Indicate the type of the IP tunnel."; } /* Grouping for tunnel */ grouping tunnel-components { description "Specify the IP addresses of the local and remote tunnel endpoint interfaces. Bind the tunnel circuit interface to the tunnel. Enable the tunnel."; leaf name { type string; description "Name of the tunnel."; Liu Expires April 15, 2016 [Page 10] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 } leaf description { type string { length "1..255"; } description "Textual description for a tunnel. Can be any "+ "alphanumeric string, including spaces, not to exceed "+ "255 ASCII characters."; } leaf bind-interface { type if:interface-ref; description "Bind to an interface."; } leaf clear-df { type empty; description "If clear-df is absent, it means that fragmentation of tunnel packets are permitted. If clear-df is present, it means that fragmentation of tunnel packets are not permitted."; } leaf shutdown { Liu Expires April 15, 2016 [Page 11] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 type empty; description "Disable/enable the tunnel."; } leaf tmtu { type uint16 { range "256..16384"; } description "Sets the Maximum Transmission Unit (MTU) size for packets sent in a tunnel. The default MTU is the MTU for the interface to which the tunnel is bound."; } leaf mirror-destination { type string; description "Designate the name of a tunnel as a circuit mirror destination. "; } leaf hop-limit { type uint8 { range "0|1..255"; } description Liu Expires April 15, 2016 [Page 12] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 "The IPv4 TTL or IPv6 Hop Limit which is used in the outer IP header. A value of 0 indicates that the calue is copied from the payload's header."; } leaf tos { type int8 { range "-1..63"; } description "The method used to set the high 6 bits (the differentiated services codepoint) of the IPv4 TOS or IPv6 Traffic Class in the outer IP header. A value of -1 indicates that the bits are copied from the payload's header. A value between 0 and 63 inclusive indicates that the bit field is set to the indicated value."; } } /*Configuration Data*/ container tunnels { description "Configuration data for tunnels."; list ip-in-ip { key "name"; Liu Expires April 15, 2016 [Page 13] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 description "Configuration of ip-in-ip tunnel."; uses tunnel-components; container peer-end-point { description "Assigns IP addresses to tunnel endpoints."; leaf local { type inet:ipv4-address-no-zone; description "IP address of the local end of the tunnel."; } leaf remote { type inet:ipv4-address-no-zone; description "IP address of the remote end of the tunnel."; } leaf routing-instance { type rt:routing-instance-ref; description "Name of the reference routing instance."; } } } list ipv6to4 { Liu Expires April 15, 2016 [Page 14] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 key "name"; description "Configuration of the 6to4 model tunnel."; uses tunnel-components; container peer-end-point { description "Assigns IP addresses to tunnel endpoints."; leaf local { type inet:ipv4-address-no-zone; description "IP address of the local end of the tunnel."; } } } list ipv6v4-manual { key "name"; description "Configuration of IPv6-over-v4 manual model tunnel."; uses tunnel-components; container peer-end-point { description "Assigns IP addresses to tunnel endpoints."; leaf local { type inet:ipv4-address-no-zone; Liu Expires April 15, 2016 [Page 15] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 description "IP address of the local end of the tunnel."; } leaf remote { type inet:ipv4-address-no-zone; description "IP address of the remote end of the tunnel."; } leaf routing-instance { type rt:routing-instance-ref; description "Name of the reference routing instance. "; } } } } /*Operational state data*/ grouping tunnel-state-components { description "The basic tunnel information to be displayed."; leaf name { type string; Liu Expires April 15, 2016 [Page 16] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 description "Name of the tunnel."; } leaf local-ip { type inet:ipv4-address-no-zone; description "IP address of the local end of the tunnel."; } leaf remote-ip { type inet:ipv4-address-no-zone; description "IP address of the remote end of the tunnel."; } leaf state { type enumeration { enum Down { description "Tunnel down state."; } enum Up { description "Tunnel up state."; } Liu Expires April 15, 2016 [Page 17] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 enum Shutdown { description "Tunnel shutdown state."; } } description "Indicate the state of the tunnel."; } leaf bind-interface { type if:interface-state-ref; description "Bind to an interface."; } leaf user-configured { type boolean; description "Indicate the tunnel is user-configured or dynamic. False is for dynamic."; } leaf routing-instance { type rt:routing-instance-ref; description "Name of the reference routing instance. "; } Liu Expires April 15, 2016 [Page 18] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 leaf tmtu { type uint16; description "The Maximum Transmission Unit (MTU) size for packets sent in a tunnel."; } leaf clear-df { type empty; description "Indicate that the DF bit is cleared."; } leaf down-reason { type string; description "The reason of the tunnel is down."; } leaf resolved-interface-name{ type string; description "The egress interface name of the tunnel."; } leaf hop-limit { type uint32; description Liu Expires April 15, 2016 [Page 19] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 "The IPv4 TTL or IPv6 Hop Limit which is used in the outer IP header. A value of 0 indicates that the calue is copied from the payload's header."; } leaf tos { type int32; description "The high 6 bits (the differentiated services codepoint) of the IPv4 TOS or IPv6 Traffic Class in the outer IP header. A value of -1 indicates that the bits are copied from the payload's header. A value between 0 and 63 inclusive indicates that the bit field is set to the indicated value."; } } container tunnel-state { config "false"; description "Contain the information currently configured tunnels."; list ip-in-ip { description "Operational state data of ip-in-ip tunnel."; uses tunnel-state-components; Liu Expires April 15, 2016 [Page 20] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 } list ipv6to4 { description "Operational state data of the 6to4 tunnel."; uses tunnel-state-components; } list ipv6v4-manual { description "Operational state data of IPv6v4-manual tunnel."; uses tunnel-state-components; } } //Augment operational state data of IP interfaces augment "/if:interfaces-state/if:interface" { when "if:type = 'ianaift:tunnel'" { description "Augment IP interface."; } description "Augment operational state data of IP interfaces."; leaf tunnel-protocol { type tunnel-type; description Liu Expires April 15, 2016 [Page 21] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 "Indicate the type of the IP tunnel interface."; } } }// end of module ietf-ipipv4-tunnel 3. IPv4 Tunnel Model [02] This document defines two options for the YANG model "ietf-ipipv4- tunnel". Each of them includes two modules, one for configuration and one for state. This section lists the second option. 3.1. Data Model The data model has the following tree diagram for the IPv4 tunnels: module: ietf-ipipv4-tunnel-02 +--rw Tunnels | +--rw Tunnel* [name] | +--rw name string | +--rw description? string | +--rw bind-interface? if:interface-ref | +--rw clear-df? empty | +--rw shutdown? empty | +--rw tmtu? uint16 | +--rw mirror-destination? string | +--rw hop-limit? uint8 | +--rw tos? int8 | +--rw (tunnel-type)? | +--:(tunnel-ipinip) Liu Expires April 15, 2016 [Page 22] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 | | +--rw ip-in-ip | | +--rw local? inet:ipv4-address-no- zone | | +--rw remote? inet:ipv4-address-no- zone | | +--rw routing-instance? rt:routing-instance-ref | +--:(tunnel-ipv6to4) | | +--rw ipv6to4 | | +--rw local? inet:ipv4-address-no-zone | +--:(tunnel-ipv6v4-manual) | +--rw ipv6v4-manual | +--rw local? inet:ipv4-address-no- zone | +--rw remote? inet:ipv4-address-no- zone | +--rw routing-instance? rt:routing-instance-ref +--ro tunnel-state +--ro tunnels* +--ro name? string +--ro local-ip? inet:ipv4-address-no-zone +--ro remote-ip? inet:ipv4-address-no-zone +--ro state? enumeration +--ro bind-interface? if:interface-state-ref +--ro user-configured? boolean +--ro routing-instance? rt:routing-instance-ref +--ro tmtu? uint16 Liu Expires April 15, 2016 [Page 23] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 +--ro clear-df? empty +--ro down-reason? string +--ro resolved-interface-name? string +--ro hop-limit? uint32 +--ro tos? int32 augment /if:interfaces-state/if:interface: +--ro tunnel-protocol? tunnel-type 3.2. YANG Model module ietf-ipipv4-tunnel-02{ namespace "urn:ietf:params:xml:ns:yang:ietf-ipipv4-tunnel-02"; prefix "v4tln"; import ietf-interfaces { prefix "if"; } import ietf-inet-types { prefix inet; } import ietf-routing { prefix "rt"; Liu Expires April 15, 2016 [Page 24] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 } organization "IETF NETMOD (NETCONF Data Modeling Language) Working Group."; contact "Mandy.Liu@ericsson.com Adam.Foldes@ericsson.com zhengguangying@huawei.com"; description "This YANG model defines the configuration data and operational state data for generic IPv4/6-in-IPv4 tunnel. It includes the IPv4 in IPv4, IPv6 to IPv4 auto and IPv6 over IPv4 manual tunnels."; revision 2015-10-15 { description "Initial revision."; reference "RFC XXXX: A YANG Data Model for IPv4 Tunnel."; } /* Typedefs */ Liu Expires April 15, 2016 [Page 25] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 typedef tunnel-type { type enumeration { enum ip-ip { description "IPv4-in-IPv4 tunnel interface."; } enum ipv6v4-manual { description "IPv6v4-manual tunnel interface."; } enum ipv6to4 { description "The 6to4 tunnel interface."; } } description "Indicate the type of the IP tunnel."; } /* Grouping for tunnel */ grouping tunnel-components { description "Specify the IP addresses of the local and remote tunnel endpoint interfaces. Bind the Liu Expires April 15, 2016 [Page 26] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 tunnel circuit interface to the tunnel. Enable the tunnel."; leaf name { type string; description "Name of the tunnel."; } leaf description { type string { length "1..255"; } description "Textual description for a tunnel. Can be any "+ "alphanumeric string, including spaces, not to exceed "+ "255 ASCII characters."; } leaf bind-interface { type if:interface-ref; description "Bind to an interface."; } leaf clear-df { type empty; description Liu Expires April 15, 2016 [Page 27] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 "If clear-df is absent, it means that fragmentation of tunnel packets are permitted. If clear-df is present, it means that fragmentation of tunnel packets are not permitted."; } leaf shutdown { type empty; description "Disable/enable the tunnel."; } leaf tmtu { type uint16 { range "256..16384"; } description "Sets the Maximum Transmission Unit (MTU) size for packets sent in a tunnel. The default MTU is the MTU for the interface to which the tunnel is bound."; } leaf mirror-destination { type string; description "Designate the name of a tunnel as a circuit mirror destination. "; Liu Expires April 15, 2016 [Page 28] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 } leaf hop-limit { type uint8 { range "0|1..255"; } description "The IPv4 TTL or IPv6 Hop Limit which is used in the outer IP header. A value of 0 indicates that the calue is copied from the payload's header."; } leaf tos { type int8 { range "-1..63"; } description "The method used to set the high 6 bits (the differentiated services codepoint) of the IPv4 TOS or IPv6 Traffic Class in the outer IP header. A value of -1 indicates that the bits are copied from the payload's header. A value between 0 and 63 inclusive indicates that the bit field is set to the indicated value."; } } Liu Expires April 15, 2016 [Page 29] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 /*Configuration Data*/ container Tunnels{ description "Configuration data for tunnels."; list Tunnel{ key name; description "Configuration data for tunnels."; uses tunnel-components; choice tunnel-type{ description "Peer end points configuration for tunnel."; case tunnel-ipinip{ container ip-in-ip{ description "The peer end points configuration of IP in IP tunnel."; leaf local { type inet:ipv4-address-no-zone; description "IP address of the local end of the tunnel."; } leaf remote { type inet:ipv4-address-no-zone; description Liu Expires April 15, 2016 [Page 30] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 "IP address of the remote end of the tunnel."; } leaf routing-instance { type rt:routing-instance-ref; description "Name of the reference routing instance. "; } } } case tunnel-ipv6to4{ container ipv6to4{ description "The peer end points configuration of 6to4 tunnel."; leaf local { type inet:ipv4-address-no-zone; description "IP address of the local end of the tunnel."; } } } case tunnel-ipv6v4-manual{ container ipv6v4-manual{ description "The peer end points configuration of IPv6-over-v4 Liu Expires April 15, 2016 [Page 31] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 manual tunnel."; leaf local { type inet:ipv4-address-no-zone; description "IP address of the local end of the tunnel."; } leaf remote { type inet:ipv4-address-no-zone; description "IP address of the remote end of the tunnel."; } leaf routing-instance { type rt:routing-instance-ref; description "Name of the reference routing instance. "; } } } } } } /*Operational state data*/ grouping tunnel-state-components { Liu Expires April 15, 2016 [Page 32] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 description "The basic tunnel information to be displayed."; leaf name { type string; description "Name of the tunnel."; } leaf local-ip { type inet:ipv4-address-no-zone; description "IP address of the local end of the tunnel."; } leaf remote-ip { type inet:ipv4-address-no-zone; description "IP address of the remote end of the tunnel."; } leaf state { type enumeration { enum Down { description "Tunnel down state."; Liu Expires April 15, 2016 [Page 33] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 } enum Up { description "Tunnel up state."; } enum Shutdown { description "Tunnel shutdown state."; } } description "Indicate the state of the tunnel."; } leaf bind-interface { type if:interface-state-ref; description "Bind to an interface."; } leaf user-configured { type boolean; description "Indicate the tunnel is user-configured or dynamic. False is for dynamic."; } Liu Expires April 15, 2016 [Page 34] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 leaf routing-instance { type rt:routing-instance-ref; description "Name of the reference routing instance. "; } leaf tmtu { type uint16; description "The Maximum Transmission Unit (MTU) size for packets sent in a tunnel."; } leaf clear-df { type empty; description "Indicate that the DF bit is cleared."; } leaf down-reason { type string; description "The reason of the tunnel is down."; } leaf resolved-interface-name{ type string; description Liu Expires April 15, 2016 [Page 35] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 "The egress interface name of the tunnel."; } leaf hop-limit { type uint32; description "The IPv4 TTL or IPv6 Hop Limit which is used in the outer IP header. A value of 0 indicates that the calue is copied from the payload's header."; } leaf tos { type int32; description "The high 6 bits (the differentiated services codepoint) of the IPv4 TOS or IPv6 Traffic Class in the outer IP header. A value of -1 indicates that the bits are copied from the payload's header. A value between 0 and 63 inclusive indicates that the bit field is set to the indicated value."; } } container tunnel-state { config "false"; description Liu Expires April 15, 2016 [Page 36] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 "Contain the information currently configured tunnels."; list tunnels { description "Operational state data of tunnels."; uses tunnel-state-components; } } //Augment operational state data of IP interfaces augment "/if:interfaces-state/if:interface" { when "if:type = 'ianaift:tunnel'" { description "Augment IP interface."; } description "Augment operational state data of IP interfaces."; leaf tunnel-protocol { type tunnel-type; description "Indicate the type of the IP tunnel interface."; } } }// end of module ietf-ipipv4-tunnel-02 Liu Expires April 15, 2016 [Page 37] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 4. Security Considerations This document does not introduce any new security risk. 5. IANA Considerations This document makes no request of IANA. 6. Acknowledgements The authors would like to thank Xufeng Liu, Samuel Chen, In-Wher Chen for their contributions to this work. 7. References 7.1. Normative References [RFC1853] W. Simpson, "IP in IP Tunneling", RFC 1853, October 1995. [RFC2003] C. Perkins, "IP Encapsulation within IP", RFC 2003, October 1996. [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC3056] B. Carpenter, K. Moore, "Connection of IPv6 Domains via IPv4 Clouds", RFC 3056, February 2001. [RFC6020] Bjorklund, M., "YANG - A Data Modeling Language for the Network Configuration Protocol (NETCONF)", RFC 6020, October 2010. 7.2. Informative References [RFC6241] Enns, R., Bjorklund, M., Schoenwaelder, J., and A. Bierman, "Network Configuration Protocol (NETCONF)", RFC 6241, June 2011. [RFC7223] Bjorklund, M., "A YANG Data Model for Interface Management", RFC 7223, May 2014. Liu Expires April 15, 2016 [Page 38] Internet-Draft Yang Data Model for IPIPv4 Tunnel October 2015 Authors' Addresses Ying Liu Ericsson No.5 Lize East Street Beijing, 100102 China Email: Mandy.Liu@ericsson.com Adam Mate Foldes Ericsson 300 Holger Way San Jose, CA 95134 USA Email: Adam.Foldes@ericsson.com Guangying Zheng Huawei Technologies N9-3-B01 Building, Huawei Technologies Co., Ltd No.101 Yuhuatai Rd., Nanjing China Email: zhengguangying@huawei.com Zitao Wang Huawei Technologies,Co.,Ltd 101 Software Avenue, Yuhua District Nanjing, 210012 China Email: wangzitao@huawei.com Yan Zhuang Huawei 101 Software Avenue, Yuhua District Nanjing, 210012 China Email: zhuangyan.zhuang@huawei.com Liu Expires April 15, 2016 [Page 39]