Network Working Group R. Jiang
Internet-Draft Z. Li
Intended status: Informational Huawei Technologies
Expires: September 14, 2017 March 13, 2017
Yang Model of Network-based P2P TE Tunnel
draft-jiang-opsawg-nettunnel-model-yang-00
Abstract
This document defines a YANG data model for network-based P2P TE
Tunnel which can be abstracted and exposed as north bound API of SDN
Controller.
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 RFC 2119 [RFC2119].
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
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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 September 14, 2017.
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publication of this document. Please review these documents
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to this document. Code Components extracted from this document must
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Network Tunnel Service Models . . . . . . . . . . . . . . . . 3
3. UTE Tunnel YANG Model . . . . . . . . . . . . . . . . . . . . 3
3.1. Overview . . . . . . . . . . . . . . . . . . . . . . . . 3
3.2. Configuration . . . . . . . . . . . . . . . . . . . . . . 4
3.2.1. Configuration Hierarchy . . . . . . . . . . . . . . . 6
3.3. Operational state . . . . . . . . . . . . . . . . . . . . 7
3.4. Notifications . . . . . . . . . . . . . . . . . . . . . . 8
3.5. Actions . . . . . . . . . . . . . . . . . . . . . . . . . 9
4. Network TE Tunnel YANG Model . . . . . . . . . . . . . . . . 9
4.1. Overview . . . . . . . . . . . . . . . . . . . . . . . . 9
4.2. Configuration . . . . . . . . . . . . . . . . . . . . . . 10
4.2.1. Configuration Hierarchy . . . . . . . . . . . . . . . 13
4.3. Operational state . . . . . . . . . . . . . . . . . . . . 14
4.4. Notifications . . . . . . . . . . . . . . . . . . . . . . 16
4.5. Actions . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.6. Open Items . . . . . . . . . . . . . . . . . . . . . . . 17
5. YANG Specification . . . . . . . . . . . . . . . . . . . . . 17
6. Security Considerations . . . . . . . . . . . . . . . . . . . 40
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 40
8. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 40
9. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 41
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 41
10.1. Normative References . . . . . . . . . . . . . . . . . . 41
10.2. Informative References . . . . . . . . . . . . . . . . . 42
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 42
1. Introduction
This document defines a YANG data model for network-based P2P TE
tunnel which can be abstracted and exposed as north bound API of SDN
Controller. The Network P2P TE tunnel includes RSVP-TE[RFC3209]
tunnel and SR-TE[RFC6241] tunnel.The data model is defined for
following structures that are used for managing the API of Network TE
Tunnel:
o Configuration
o Operational State
o Executables (Actions)
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o Notifications
2. Network Tunnel Service Models
The hierarchy of Network-based P2P TE Tunnel service models are
depicted in the following figure:
+--------------+
| |
| Network |
| UTETunnel |
+-------+------+
|
+--------------+--------------+
| |
V V
+--------------+ +--------------+
| Network | | Network |
| TE Tunnel | | UNI Tunnel |
| | | |
+--------------+ +--------------+
|
+-------------------+
| |
V V
+---------------+ +---------------+
| RSVP TE | | SR TE |
| Tunnel | | Tunnel |
| | | |
+---------------+ +---------------+
Figure 1: Architecture of Tunnel Service Model
For Network TE Tunnel hierarchical service models, Network UTE Tunnel
means the abstract common Tunnel model for different kind of Network
TE tunnels, and Network TE-Tunnel in this draft is augmented from
Network UTE Tunnel model. Network TE Tunnel include SR Tunnel and
RSVP TE Tunnel.
3. UTE Tunnel YANG Model
3.1. Overview
This section describes a new model named as "net-ute-tunnel" for
unified Network TE Tunnel data model.
There are four main containers in "net-ute-tunnel" module as follows:
o Read-Write parameters for configuration (Discussed in Section 3.2)
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o Read-only parameters for operational state (Discussed in
Section 3.3)
o Notifications for events (Discussed in Section 3.4)
o RPCs for executing commands to perform some action (Discussed in
Section 3.5)
For the configuration and state data, this model include two types:
one is configurable item (rw), the other is operational item(ro)
which means applied and derived state.
The following diagram depicts high level Unified Network TE Tunnel
Yang tree organization and hierarchy:
module: ietf-OPSAWG-ute-tunnel
+--rw ute-tunnel-cfg
| +--rw p2p-tunnel
| +--rw tunnels
| | +--rw tunnel* [tunnel-name]
| +--rw bidirection-co-route-groups
| +--rw co-route-group* [co-route-name]
+--ro ute-tunnel-oper
| +--ro p2p-tunnel
| +--ro tunnels
notifications:
+---n tunnel-state-down
+---n tunnel-state-down-clear
+---n tunnel-lsp-changed
Figure 2: high level Network UTE Tunnel yang tree organization and
hierarchy
This model includes common abstract properties of different Network
TE Tunnels, such as Network P2P tunnel configuration and set up
bidirection co-route groups, in notification part it only support
basic events like tunnel down and changed.
3.2. Configuration
This specification defines the configuration parameters for Network
UTE Tunnel resource, and defines some of the most significant and
commonly used capabilities.
As mentioned above, the configuration tree presents read-write
intended configuration leave/items as well as read-only state of the
applied configuration.
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Following is high-level configuration organization for Network UTE
Tunnel:
module: ietf-OPSAWG-ute-tunnel
augment /ute-tunnel:ute-tunnel-cfg:
+--rw p2p-tunnel
+--rw tunnels
+--rw bidirection-co-route-groups
Figure 3: high-level configuration organization for UTE Tunnel
Following is a simplified graphical representation of the data model
for Network UTE Tunnel configuration:
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+--rw ute-tunnel-cfg
| +--rw p2p-tunnel
| +--rw tunnels
| | +--rw tunnel* [tunnel-name]
| | +--rw tunnel-name string
| | +--rw user-label? string
| | +--rw tunnel-type identityref
| | +--rw admin-status? ac-type:admin-status
| | +--rw sym-tunnel-name? string
| | +--rw mtu? uint32
| | +--rw manage-type? manage-type
| | +--rw manage-protocol? manage-protocol
| | +--rw control-protocol? control-protocol
| | +--rw control-mode? control-mode
| | +--rw adopt? boolean
| | +--rw ip-address? inet:ipv4-address
| | +--rw ip-unnumbered? string
| | +--rw source
| | | +--rw ne-id? yang:uuid
| | | +--rw ip-address inet:ip-address
| | +--rw destination
| | +--rw ne-id? yang:uuid
| | +--rw ip-address inet:ip-address
| +--rw bidirection-co-route-groups
| +--rw co-route-group* [co-route-name]
| +--rw co-route-name string
| +--rw user-label? string
| +--rw bfd-enable? boolean
| +--rw first-tunnel
| | +--rw tunnel-name? string
| +--rw second-tunnel
| +--rw tunnel-name? string
Figure 4: simplified graphical representation of the data model for
Network UTE Tunnel configuration
3.2.1. Configuration Hierarchy
The Network UTE Tunnel configuration container is logically divided
into following high-level config areas:
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UTE-Tunnel parameters
o Point to Point Tunnel parameters
- Tunnels
- Per-Tunnel:
- bidirection-co-route-groups
- co-route-group
Figure 5: high-level Network UTE Tunnel configuration container
Following subsections briefly explain these configuration areas.
3.2.1.1. Network P2P Tunnel parameters
Network P2P Tunnel parameters is used to configure the detail
properties of Network TE Tunnel, The manage-type describe the tunnel
management right belongs to SDN controller or network element. The
manage-protocol means the tunnel management protocol between SDN
controller and devices.
bidirection-co-route-groups bind two tunnel which use the same path-
hops but the direction is opposite together, we can choose whether
need to enable BFD feature or not
3.3. Operational state
Operational state of Network TE tunnel can be queried and obtained
from read-only state containers that fall under the same tree (/ute-
tunnel:ute-tunnel-oper /ute-tunnel:p2p-tunnel/ute-tunnel:tunnels/ute-
tunnel:tunnel) as the configuration.
Please note this state tree refers both the configuration "applied"
state. Following is a simplified graphical representation of the
data model for Network UTE tunnel operational state.
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+--ro ute-tunnel-oper
+--ro p2p-tunnel
+--ro tunnels
+--ro tunnel* [tunnel-name]
+--ro tunnel-name string
+--ro tunnel-type identityref
+--ro oper-status? ac-type:operate-status
+--ro tunnel-id? uint32
+--ro sym-tunnel-name? string
+--ro source
| +--ro ne-id? yang:uuid
| +--ro ip-address inet:ip-address
+--ro destination
+--ro ne-id? yang:uuid
+--ro ip-address inet:ip-address
Figure 6: simplified graphical representation of the data model for
Network UTE Tunnel Operational state
The Network UTE Tunnel Operational states mostly the subset of
configuration data,such as tunnel name and other basic properties.
3.4. Notifications
This model defines a list of notifications to inform subscriber of
important events detected during the configuration and operation.
These events include events related to changes in the operational
state of Network TE Tunnel, including tunnel-state-down event,
Tunnel-state-down-clear event, tunnel-lsp-changed event. Following
is a simplified graphical representation of the data model for
Network UTE Tunnel notifications.
notifications:
+---n tunnel-state-down
| +--ro tunnel-name? leafref
+---n tunnel-state-down-clear
| +--ro tunnel-name? leafref
| +--ro reason? tunnel-down-clear-reason
+---n tunnel-lsp-changed
+--ro tunnel-name? leafref
+--ro oper-type? oper-type
+--ro sym-path-name? leafref
+--ro source
+--ro ne-id? yang:uuid
+--ro ip-address inet:ip-address
Figure 7: simplified graphical representation of the data model for
UTE Tunnel notifications
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3.5. Actions
There is no rpc that allow performing an action or executing a
command on the QoS operation.
4. Network TE Tunnel YANG Model
4.1. Overview
This section defines a new module named "net-te-tunnel" for Network
TE Tunnel data model where this module augments net-ute-tunnel that
is defined in previous section.
There are four main containers in "net-te-tunnel" module as follows:
o Read-Write parameters for configuration (Discussed in Section 3.2)
o Read-only parameters for operational state (Discussed in
Section 3.3) o Notifications for events (Discussed in Section 3.4) o
RPCs for executing commands to perform some action (Discussed in
Section 3.5)
Following diagram depicts high level Network TE Tunnel yang tree
organization and hierarchy:
module: ietf-OPSAWG-te-tunnel
augment /ute-tunnel:ute-tunnel-cfg:
+--rw global-cfg
augment /ute-tunnel:ute-tunnel-cfg/ute-tunnel:p2p-tunnel/ute-tunnel:tunnels/ute-tunnel:tunnel:
+--rw path-setup-type? pce-type:path-setup-type
+--rw sr-path-type? sr-path-type
+--rw ...
augment /ute-tunnel:ute-tunnel-oper/ute-tunnel:p2p-tunnel/ute-tunnel:tunnels/ute-tunnel:tunnel:
+--ro path-setup-type? pce-type:path-setup-type
+--ro co-route-name? string
+--ro ...
rpcs:
+---x query-te-tunnels-nbi
+--ro input
+--ro output
notifications:
+--- n tunnel-besteffort
+--- n ...
Figure 8: high level Network TE Tunnel yang tree organization and
hierarchy
Before going into data model details, it is important to take note of
the following points:
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o This module does not cover CR-LDP, only focus on RSVP-TE and SR-TE
which is widely used on devices.
o This model supports two address-families, namely "ipv4" and "ipv6".
o When in SR-TE Scenario, this model support centralized control of
allocating adjacency label/segment to avoid extending IGP to allocate
label/segment which will take effect on network performance.
A graphical representation of Network TE YANG data model is presented
in Figure 10, Figure 12, Figure 13, and Figure 14. Whereas, the
actual model definition in YANG is captured in the end of this
Section. While presenting the YANG tree view and actual yang
specification, this document assumes the reader is familiar with the
concepts of YANG modelling, its presentation and its compilation.
4.2. Configuration
This specification defines the configuration parameters for Network
TE Tunnel resource, and defines some of the most significant and
commonly used capabilities such as Hot Standby, SR-TE label/segment
adherence when label stack is too deep, and Fast Reroute.
This model augments net-ute-tunnel that is defined in previous
section. As mentioned above, the configuration tree presents read-
write intended configuration leave/items as well as read-only state
of the applied configuration.
Following is high-level configuration organization for Network TE
Tunnel:
module: ietf-OPSAWG-te-tunnel
augment /ute-tunnel:ute-tunnel-cfg:
+--rw global-cfg
+--rw p2p-tunnel
+--rw tunnels
+--rw bidirection-co-route-groups
Figure 9: high-level configuration organization for Network TE Tunnel
Following is a simplified graphical representation of the data model
for Tunnel configuration:
+--rw te-tunnel-cfg
+--rw global-cfg
+--rw bandwith-threshold? uint32
+--rw p2p-tunnel
+--rw tunnels
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| +--rw tunnel
| +--rw tunnelname string
| +--rw user-label string
| +--rw tunnel-type tunl-type
| +--rw admin-status ac-typeadmin-status
| +--rw sym-tunnel-name string
| +--rw mtu uint32
| +--rw manage-type manage-type
| +--rw manage-protocol manage-protocol
| +--rw control-protocol control-protocol
| +--rw control-mode control-mode
| +--rw adopt boolean
| +--rw ip-address inetipv4-address
| +--rw ip-unnumbered string
| +--rw source
| +--rw ne-id yanguuid
| +--rw ip-address inetip-address;
| +--rw destination
| +--rw ne-id yanguuid
| +--rw ip-address inetip-address;
| +--rw path-setup-type? pce-type:path-setup-type
| +--rw sr-path-type? sr-path-type
| +--rw is-bypass-tunnel? boolean
| +--rw bypass-tunnel
| | +--rw protect-interface
| | +--rw ltp-id? yang:uuid
| +--rw hot-standby-enable? boolean
| +--rw tunnel-constraint
| | +--rw setup-priority? uint8
| | +--rw holdup-priority? uint8
| | +--rw bandwidth? uint32
| | +--rw oper-bandwidth? uint32
| | +--rw path-options* [option-number]
| | +--rw option-number uint16
| | +--rw path-constraints* [path-role]
| | +--rw path-role pce-type:lsp-role
| | +--rw latency? uint32
| | +--rw hop-limit? uint16
| | +--rw include-affinity-any? pce-type:affinity
| | +--rw include-affinity-all? pce-type:affinity
| | +--rw exclude-affinity? pce-type:affinity
| | +--rw te-attribute-ignore? bits
| | +--rw explicit-path-hops
| | +--rw explicit-path-hop* [hop-index]
| | +--rw hop-index uint32
| | +--rw ne-id? yang:uuid
| | +--rw ltp-id? yang:uuid
| | +--rw ip-address? inet:ipv4-address
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| | +--rw hop-inc-type? pce-type:hop-inc-type
| | +--rw hop-type? pce-type:hop-type
| +--rw protect-policy
| | +--rw hot-standby
| | | +--rw revertive? revertive-type
| | | +--rw bandwidth-mode? bandwidth-mode
| | | +--rw wtr? uint32
| | +--rw frr
| | +--rw fast-reroute? boolean
| | +--rw bypass-attributes
| | +--rw setup-priority? uint8
| | +--rw holdup-priority? uint8
| | +--rw bandwidth? uint32
| | +--rw include-affinity-any? pce-type:affinity
| | +--rw include-affinity-all? pce-type:affinity
| | +--rw exclude-affinity? pce-type:affinity
| | +--rw te-attribute-ignore? bits
| +--rw tunnel-service
| +--rw service-class? bits
| +--rw outbound-limit? boolean
| +--rw reserved-for-binding? boolean
| +--rw statistic-enable? boolean
| +--rw igp-capabilities
| +--rw igp-instance* [index]
| | +--rw index uint32
| | +--rw protocol-type protocol-type
| | +--rw igp-instance-id? uint32
| | +--rw ospf-area-id? uint32
| +--rw propagate-mode? propagate-mode
| +--rw advertise-hold-time? uint32
| +--rw igp-metric-type? igp-metric-type
| +--rw relative-metric-value? int32
| +--rw absolute-metric-value? uint32
+--rw bidirection-co-route-groups
+--rw co-route-group
+--rw co-route-name string
+--rw user-label string
+--rw co-route-group
+--rw co-route-name string
+--rw user-label string
+--rw bfd-enable boolean
+--rw first-tunnel
+--rw tunnel-name string
+--rw second-tunnel
+--rw tunnel-name string
Figure 10: Simplified graphical representation of the data model for
Network TE Tunnel configuration
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4.2.1. Configuration Hierarchy
The Tunnel configuration container is logically divided into
following high-level config areas:
TE-Tunnel parameters
o Global Tunnel parameters
o Point to Point Tunnel parameters
- Tunnels
- Per-Tunnel:
tunnel-constraint
protect-policy
tunnel-service
- bidirection-co-route-groups
- co-route-group
Figure 11: high-level Tunnel configuration container
Following subsections briefly explain these configuration areas.
4.2.1.1. Network TE-Tunnel parameters
Network TE tunnel parameters is used to describe the common
properties of different types of Network TE tunnels, including SR-TE
and RSVP-TE Tunnel, So the configuration is further divided into sub
categories as follows.
4.2.1.1.1. Global Tunnel parameters
Global Tunnel parameters is used to configure the bandwidth threshold
of Network TE tunnel, it describe Network TE tunnel max bandwidth of
network, only effective when enable auto-bandwidth adjustment.
4.2.1.1.2. Point to Point Tunnel parameters
Network Point to Point Tunnel parameters is used to configure the
detail properties of Network TE Tunnel, the Tunnel-type include SR-TE
and RSVP-TE. The manage-type describe the tunnel management right
belongs to SDN controller or network element. The manage-protocol
means the tunnel management protocol between SDN controller and
devices. The tunnel configuration support explicit other constraints
on path set up, also the protect-policy like Hot standby, FRR is in
parameters. Tunnel service is used to for identify the tunnel can be
used on forwarding plane such as Qos and IGP capabilities of this
tunnel interface
bidirection-co-route-groups is already mentioned above in Network UTE
tunnel configuration.
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4.3. Operational state
Operational state of Network TE tunnel can be queried and obtained
from read-only state containers that fall under the same tree (/ute-
tunnel:ute-tunnel-oper /ute-tunnel:p2p-tunnel/ute-tunnel:tunnels/ute-
tunnel:tunnel) as the configuration.
Please note this state tree refers both the configuration "applied"
state. Following is a simplified graphical representation of the
data model for Network TE tunnel operational state.
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+--ro te-tunnel-oper
augment /ute-tunnel:ute-tunnel-oper/ute-tunnel:p2p-tunnel/ute-tunnel:tunnels/ute-tunnel:tunnel:
+--ro path-setup-type? pce-type:path-setup-type
+--ro co-route-name? string
+--ro trigger-source? pce-type:trigger-type
+--ro path-lists
+--ro path-list* [option-number]
+--ro option-number uint16
+--ro paths* [path-role lsp-id]
+--ro path-role pce-type:lsp-role
+--ro lsp-id uint32
+--ro active? boolean
+--ro bandwidth? pce-type:bandwidth
+--ro request-latency? uint32
+--ro path-latency? uint32
+--ro path-metric? uint32
+--ro include-affinity-any? pce-type:affinity
+--ro include-affinity-all? pce-type:affinity
+--ro exclude-affinity? pce-type:affinity
+--ro setup-priority? uint8
+--ro holdup-priority? uint8
+--ro hops
| +--ro hop* [hop-index]
| +--ro hop-index uint32
| +--ro ne-id? yang:uuid
| +--ro ltp-id? yang:uuid
| +--ro ip-address? inet:ipv4-address
| +--ro hop-inc-type? pce-type:hop-inc-type
+--ro sr-label-stack
+--ro sr-label* [hop-index]
+--ro hop-index uint32
+--ro sid? uint32
+--ro sid-type? sid-type
+--ro ipv4-node-info
| +--ro node-address? inet:ipv4-address
+--ro ipv6-node-info
| +--ro node-address? inet:ipv6-address
+--ro ipv4-adjacency-info
| +--ro local-address? inet:ipv4-address
| +--ro remote-address? inet:ipv4-address
+--ro ipv6-adjacency-info
| +--ro local-address? inet:ipv6-address
| +--ro remote-address? inet:ipv6-address
+--ro lsr-id
+--ro node-lsr-id? inet:ip-address
Figure 12: simplified graphical representation of the data model for
Tunnel Operational state
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The Network TE Tunnel Operational states mostly the subset of
configuration data, based on path constraints, SDN Controller can
calculate the path which can be represent by hops for both RSVP-TE
and SR-TE, these two kind of tunnels have many features in common
like affinity, but for SR-TE only it needs the SR label stack to show
the whole path, and if the label stack is too deep, it also need to
identify the lsr-id who should do the label adhesion job in the path.
4.4. Notifications
This model defines a list of notifications to inform subscriber of
important events detected during the configuration and operation.
These events include events related to changes in the operational
state of an Network TE Tunnel, including tunnel-besteffort event when
Tunnel downgrades to best effort, tunnel-unprotected when Tunnel
downgrades to non protection, tunnel-overlap event when Tunnel's
primary and secondary LSPs are overlap, tunnel-constraint-unsatisfied
event when Tunnel new constraint is unsatisfied. Following is a
simplified graphical representation of the data model for Network TE
Tunnel notifications.
module: net-te-tunnel
notifications:
+---n tunnel-besteffort
| +--ro tunnel-name? leafref
+---n tunnel-besteffort-clear
| +--ro tunnel-name? leafref
+---n tunnel-unprotected
| +--ro tunnel-name? leafref
+---n tunnel-unprotected-clear
| +--ro tunnel-name? leafref
+---n tunnel-overlap
| +--ro tunnel-name? leafref
+---n tunnel-overlap-clear
| +--ro tunnel-name? leafref
+---n tunnel-constraint-unsatisfied
| +--ro tunnel-name? leafref
+---n tunnel-constraint-unsatisfied-clear
+--ro tunnel-name? leafref
Figure 13: simplified graphical representation of the data model for
Network TE Tunnel notifications
4.5. Actions
This model defines a list of rpcs that allow performing an action or
executing a command on the protocol. For here, it only have one RPC
to support query-te-tunnels-nbi to query all TE Tunnels Following is
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a simplified graphical representation of the data model for Network
TE Tunnel actions.
module: ietf-OPSAWG-te-tunnel
RPCs:
+---x query-te-tunnels-nbi
+--ro input
| +--ro src-ne-id yang:uuid
| +--ro dst-ne-id yang:uuid
| +--ro tunnel-name? pce-type:tunnel-name
+--ro output
+--ro te-tunnel-brief
+--ro total-record-num? uint32
+--ro te-tunnel*
+--ro tunnel-name? pce-type:tunnel-name
+--ro tunnel-type? identityref
+--ro user-label? string
+--ro source
| +--ro ne-id? yang:uuid
| +--ro ip-address inet:ip-address
+--ro destination
| +--ro ne-id? yang:uuid
| +--ro ip-address inet:ip-address
+--ro bandwidth? uint32
+--ro min-latency? uint32
Figure 14: simplified graphical representation of the data model for
Network TE Tunnel actions
4.6. Open Items
TBD
5. YANG Specification
Following are actual YANG definition for Network UTE Tunnel and
Network TE Tunnel constructs defined earlier in the document, Network
UTE Tunnel yang file is Unified TE tunnel and used to describe the
common properties of different types of Network TE tunnels, Network
TE Tunnel yang file is augment from it.
<CODE BEGINS> file "ietf-OPSAWG-ute-tunnel.yang"----->
module ietf-OPSAWG-ute-tunnel {
namespace namespace "urn:ietf:params:xml:ns:yang:ietf-OPSAWG-ute-tunnel";
prefix ute-tunnel;
import ietf-yang-types {prefix yang;}
import ietf-inet-types {prefix inet;}
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import ietf-ac-pub-type {prefix ac-type;}
organization "IETF OPSA Working Group";
contact
"Editor: Robin Li
<mailto:lizhenbin@huawei.com>";
description ;
revision 2017-03-11{
description Initial version;
reference ;
}
enumeration
typedef manage-protocol{
type enumeration{
enum netconf{
value 0;
}
}
}
typedef control-protocol{
type enumeration{
enum pcep{
value 0;
}
enum netconf{
value 1;
}
}
}
typedef manage-type{
type enumeration{
enum ne{
value 0;
description Tunnel is create and delete,modified by ne;
}
enum controller{
value 1;
description tunne is create,delete andmodified by controller;
}
}
}
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typedef control-mode{
type enumeration{
enum delegate{
value 0;
}
enum report{
value 1;
}
enum none{
value 2;
}
}
}
typedef tunnel-down-clear-reason {
type enumeration {
enum up {
value 1;
description indicates the tunnel is down .;
}
enum delete {
value 2;
description indicates the tunnel is delete .;
}
}
}
typedef oper-type {
type enumeration {
enum update {
value 0;
description indicates the tunnel lsp is update .;
}
enum remove {
value 1;
description indicates the tunnel lsp is remove .;
}
}
}
Identities
identity tunl-type {
}
identity te{
base tunl-type;
}
identity uni{
base tunl-type;
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}
Groupings
grouping src-or-dst{
leaf ne-id{
type yanguuid;
}
leaf ip-address{
type inetip-address;
mandatory true;
}
}
Main container of cfg
container ute-tunnel-cfg{
container p2p-tunnel{
container tunnels{
list tunnel{
key tunnel-name;
leaf tunnel-name{
type string {
length 1..64;
}
description Tunnel Name;
}
leaf user-label{
type string {
length 0..242;
}
}
leaf tunnel-type{
type identityref{
base tunl-type;
}
mandatory true;
}
leaf admin-status{
type ac-typeadmin-status;
default admin-up;
}
leaf sym-tunnel-name{
type string {
length 1..255;
}
}
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leaf mtu{
type uint32 {
range 46..9600;
}
default 1500;
}
leaf manage-type{
type manage-type;
}
leaf manage-protocol{
type manage-protocol;
}
leaf control-protocol {
description The tunnel path's control protocol type;
type control-protocol;
default pcep;
}
leaf control-mode{
type control-mode;
}
leaf adopt {
description Tunnel is adopted by controller and can be relayed by services;
type boolean;
default false;
}
leaf ip-address{
type inetipv4-address;
}
leaf ip-unnumbered{
type string {
length 1..64;
}
}
container source{
uses src-or-dst;
}
container destination{
uses src-or-dst;
}
}
}
container bidirection-co-route-groups{
list co-route-group{
key co-route-name;
leaf co-route-name{
type string {
length 1..64;
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}
}
leaf user-label{
type string {
length 0..242;
}
}
leaf bfd-enable {
type boolean;
default false;
}
container first-tunnel{
leaf tunnel-name {
type string {
length 1..64;
}
}
}
container second-tunnel{
leaf tunnel-name {
type string {
length 1..64;
}
}
}
}
}
}
}
Main container of oper
container ute-tunnel-oper{
config false;
container p2p-tunnel{
container tunnels{
list tunnel{
key tunnel-name;
leaf tunnel-name{
type string {
length 1..64;
}
description Tunnel Name;
}
leaf tunnel-type{
type identityref{
base tunl-type;
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}
mandatory true;
}
leaf oper-status{
type ac-typeoperate-status;
}
leaf tunnel-id{
type uint32;
}
leaf sym-tunnel-name{
type string {
length 1..255;
}
}
container source{
uses src-or-dst;
}
container destination{
uses src-or-dst;
}
}
}
}
}
notification
notification tunnel-state-down{
leaf tunnel-name{
type leafref{
path ute-tunnel-operp2p-tunneltunnelstunneltunnel-name;
}
}
}
notification tunnel-state-down-clear{
leaf tunnel-name{
type leafref{
path ute-tunnel-operp2p-tunneltunnelstunneltunnel-name;
}
}
leaf reason {
type tunnel-down-clear-reason;
}
}
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notification tunnel-lsp-changed{
leaf tunnel-name{
type leafref{
path ute-tunnel-operp2p-tunneltunnelstunneltunnel-name;
}
}
leaf oper-type{
type oper-type;
}
leaf sym-path-name{
type leafref{
path ute-tunnel-operp2p-tunneltunnelstunnelsym-tunnel-name;
}
}
container source{
uses src-or-dst;
}
}
} <CODE ENDS>
Figure 15: Network UTE Tunnel Yang File
<CODE BEGINS> file "ietf-OPSAWG-te-tunnel.yang"----->
module ietf-OPSAWG-te-tunnel{
namespace "urn:ietf:params:xml:ns:yang:ietf-OPSAWG-te-tunnel";
prefix "te-tunnel";
import ietf-yang-types {prefix yang;}
import ietf-inet-types {prefix inet;}
import ietf-OPSAWG-ute-tunnel{prefix ute-tunnel;}
import ietf-pce-type {prefix pce-type;}
organization "IETF OPSA Working Group";
contact
"Editor: Robin Li
<mailto:lizhenbin@huawei.com>";
description "Net MPLS TE tunnel";
revision 2016-01-01{
description "Initial version";
reference "";
}
/*****************************************************************
* enumeration
*****************************************************************/
typedef revertive-type{
type enumeration{
enum revertive{
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value 0;
description "hot-standby revertive";
}
enum no-revertive{
value 1;
description "hot-standby no-revertive";
}
}
}
typedef bandwidth-mode{
type enumeration{
enum original-bandwidth{
value 0;
description "hotstandby lsp's bandwidth is same with the primary lsp";
}
enum dynamic-bandwidth{
value 1;
description "hotstandby lsp use 0 bandwidth";
}
}
}
typedef sr-path-type{
type enumeration{
enum adjacency-sid{
value 1;
}
enum node-sid{
value 2;
}
/*
enum hybrid{
value 3;
}
*/
}
}
typedef sid-type {
type enumeration {
enum "ipv4-node" {
value 1;
description "IPv4 node sid";
}
/*
enum "ipv6-node" {
value 2;
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description "IPv6 node sid";
}
*/
enum "ipv4-adjacency" {
value 3;
description "IPv4 adjacency sid";
}
/*
enum "ipv6-adjacency" {
value 4;
description "IPv6 adjacency sid";
}
*/
/* value 5 is remained for unnumbered adjacency */
enum "adhere-label" {
value 6;
description "IPv6 adjacency sid";
}
}
}
typedef protocol-type{
type enumeration{
enum isis{
value 1;
}
enum ospf{
value 2;
}
}
}
typedef igp-metric-type{
type enumeration{
enum relative{
value 1;
}
enum absolute{
value 2;
}
}
}
typedef propagate-mode{
type enumeration{
enum shortcut{
value 1;
}
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enum forward-adjacency{
value 2;
}
}
}
/*****************************************************************
* Groupings
*****************************************************************/
grouping tunnel-constraint-cfg{
leaf setup-priority{
type uint8 {
range "0 .. 7";
}
default 7;
}
leaf holdup-priority{
type uint8 {
range "0 .. 7";
}
default 7;
}
leaf bandwidth{
type uint32 {
range "0..4000000000";
}
default 0;
}
leaf oper-bandwidth{
type uint32 {
range "0..4000000000";
}
default 0;
}
list path-options{
key "option-number";
leaf option-number{
type uint16{
range "1 | 65535";
}
description "path option number , only support 1 and 65535, 65535 is for the best-effort path";
}
list path-constraints{
key "path-role";
leaf path-role{
type pce-type:lsp-role;
}
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leaf latency{
type uint32 {
range "0..60000000";
}
default 0;
}
leaf hop-limit{
type uint16 {
range "1..32";
}
default 32;
}
leaf include-affinity-any{
type pce-type:affinity;
}
leaf include-affinity-all{
type pce-type:affinity;
description "include-affinity-all";
}
leaf exclude-affinity{
type pce-type:affinity;
}
leaf te-attribute-ignore{
type bits {
bit ignore-affinity {
position 0;
}
}
}
container explicit-path-hops{
list explicit-path-hop{
key "hop-index";
leaf hop-index{
type uint32{
range 0..63;
}
}
leaf ne-id{
type yang:uuid;
}
leaf ltp-id{
type yang:uuid;
}
leaf ip-address{
type "inet:ipv4-address";
}
leaf hop-inc-type{
type pce-type:hop-inc-type;
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}
leaf hop-type{
type pce-type:hop-type;
}
}
}
}
}
}
grouping hot-standby{
leaf revertive{
type revertive-type;
default revertive;
}
leaf bandwidth-mode{
type bandwidth-mode;
default original-bandwidth;
}
leaf wtr{
type uint32 {
range "0..2592000";
}
default 10;
description "wait to restore";
}
}
/*************************************************************
* augment extension
**************************************************************/
augment "/ute-tunnel:ute-tunnel-cfg" {
container global-cfg {
leaf bandwidth-threshold {
description "TE tunel max bandwidth of network, only effective to service-driven tunnel";
type uint32 {
range "0..4000000000";
}
default 500000;
}
}
}
augment "/ute-tunnel:ute-tunnel-cfg/ute-tunnel:p2p-tunnel/ute-tunnel:tunnels/ute-tunnel:tunnel"{
when "ute-tunnel:tunnel-type='te'";
leaf path-setup-type{
type pce-type:path-setup-type;
default rsvp-te;
}
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leaf sr-path-type {
description "The SR-TE tunnel path's type";
type sr-path-type;
default adjacency-sid;
}
leaf is-bypass-tunnel{
must "path-setup-type = 'pce-type:rsvp-te'";
type boolean;
default false;
}
container bypass-tunnel{
must "path-setup-type = 'pce-type:rsvp-te'";
when "is-bypass-tunnel='true'";
container protect-interface{
leaf ltp-id{
type yang:uuid;
}
}
}
leaf hot-standby-enable {
type "boolean";
default false;
description "hot-standby protect capability";
}
container tunnel-constraint{
uses tunnel-constraint-cfg;
}
container protect-policy{
when "is-bypass-tunnel='false'";
container hot-standby{
uses hot-standby;
}
container frr{
must "path-setup-type = 'pce-type:rsvp-te'";
leaf fast-reroute{
type boolean;
}
container bypass-attributes{
leaf setup-priority{
type uint8 {
range "0 .. 7";
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}
default 7;
}
leaf holdup-priority{
type uint8 {
range "0 .. 7";
}
default 7;
}
leaf bandwidth{
type uint32 {
range "0..4000000000";
}
default 0;
}
leaf include-affinity-any{
type pce-type:affinity;
}
leaf include-affinity-all{
type pce-type:affinity;
}
leaf exclude-affinity{
type pce-type:affinity;
}
leaf te-attribute-ignore{
type bits {
bit ignore-affinity {
position 0;
}
}
}
}
}
}
container tunnel-service{
leaf service-class{
type bits{
bit be{
position 0;
}
bit af1{
position 1;
}
bit af2{
position 2;
}
bit af3{
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position 3;
}
bit af4{
position 4;
}
bit ef{
position 5;
}
bit cs6{
position 6;
}
bit cs7{
position 7;
}
bit default{
position 8;
}
}
}
leaf outbound-limit{
type boolean;
default false;
}
leaf reserved-for-binding{
type boolean;
}
leaf statistic-enable{
type boolean;
default false;
description "traffic statistic enable";
}
container igp-capabilities {
description "The IGP capabilities of this tunnel interface";
list igp-instance {
description "The key of this IGP instance";
key "index";
leaf index{
type uint32;
description "The index of this object";
}
leaf protocol-type{
type protocol-type;
description "The protocol type of this tunnel interface";
mandatory true;
}
leaf igp-instance-id{
type uint32{
range 1..4294967295;
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}
description "The id of this protocol instance";
default 1;
}
leaf ospf-area-id{
when protocol-type=ospf;
type uint32{
range 0..4294967295;
}
description "The id of OSPF area";
}
}
leaf propagate-mode{
type propagate-mode;
description "The propagate mode";
}
leaf advertise-hold-time {
when propagate-mode=forward-adjacency;
type uint32{
range 0..4294967295;
}
description "The time value of advertise hold timer when FA is enabled";
}
leaf igp-metric-type{
type igp-metric-type;
description "The igp metric type";
}
leaf relative-metric-value {
when igp-metric-type=relative;
type int32{
range -10..10;
}
description "The igp metric value when type is relative";
}
leaf absolute-metric-value {
when igp-metric-type=absolute;
type uint32{
range 1..65535;
}
description "The igp metric value when type is absolute";
}
}
}
}
augment "/ute-tunnel:ute-tunnel-oper/ute-tunnel:p2p-tunnel/ute-tunnel:tunnels/ute-tunnel:tunnel" {
when "ute-tunnel:tunnel-type='te'";
leaf path-setup-type{
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config "false";
type pce-type:path-setup-type;
default rsvp-te;
}
leaf co-route-name{
type string {
length "1..64";
}
}
leaf trigger-source{
type pce-type:trigger-type;
}
container path-lists{
list path-list{
key "option-number";
leaf option-number{
type uint16;
description "path option number , only support 1 and 65535, 65535 is for the best-effort path";
}
list paths{
key "path-role lsp-id";
leaf path-role{
type pce-type:lsp-role;
}
leaf lsp-id{
type uint32{
range 0..4294967295;
}
}
leaf active {
type boolean;
}
uses path-constraint-inuse;
container hops{
list hop{
key "hop-index";
leaf hop-index{
type uint32{
range 0..63;
}
}
leaf ne-id{
type yang:uuid;
}
leaf ltp-id{
type yang:uuid;
}
leaf ip-address{
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type inet:ipv4-address;
}
leaf hop-inc-type{
type pce-type:hop-inc-type;
}
}
}
container sr-label-stack{
description "The label stack of this SR-TE tunnel";
list sr-label{
description "The SID information of this hop instance";
key "hop-index";
leaf hop-index{
type uint32{
range 0..63;
}
description "The index of this hop instance";
}
leaf sid {
type uint32;
description "The SID of this hop instance";
}
leaf sid-type {
type sid-type;
description "The type of this SID";
}
container ipv4-node-info {
description "The information of this IPv4 node SID";
when sid-type=ipv4-node;
leaf node-address {
type inet:ipv4-address;
description "The address of this IPv4 node SID";
}
}
container ipv6-node-info {
description "The information of this IPv6 node SID";
when sid-type=ipv6-node;
leaf node-address {
type inet:ipv6-address;
description "The address of this IPv6 node SID";
}
}
container ipv4-adjacency-info {
description "The information of this IPv4 adj SID";
when sid-type=ipv4-adjacency;
leaf local-address {
type inet:ipv4-address;
description "The local address of this IPv4 adj SID";
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}
leaf remote-address {
type inet:ipv4-address;
description "The remote address of this IPv4 adj SID";
}
}
container ipv6-adjacency-info {
description "The information of this IPv6 node SID";
when sid-type=ipv6-adjacency;
leaf local-address {
type inet:ipv6-address;
description "The local address of this IPv6 adj SID";
}
leaf remote-address {
type inet:ipv6-address;
description "The remote address of this IPv6 adj SID";
}
}
container lsr-id {
description "The information of this adhere node";
when sid-type=adhere-label;
leaf node-lsr-id {
type inet:ip-address;
description "The LSR-ID address of this adhere node";
}
}
}
}
}
}
}
}
grouping te-tunnel-brief-grouping{
leaf total-record-num{
type uint32;
}
list te-tunnel{
leaf tunnel-name{
type pce-type:tunnel-name;
description "Tunnel Name";
}
leaf tunnel-type{
type identityref{
base ute-tunnel:tunl-type;
}
}
leaf user-label{
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type string {
length "0..242";
}
}
container source{
uses ute-tunnel:src-or-dst;
}
container destination{
uses ute-tunnel:src-or-dst;
}
leaf bandwidth{
type uint32;
}
leaf min-latency{
type uint32 {
range "0..60000000";
}
description "Min latency of configuration";
}
}
}
grouping path-constraint-inuse{
leaf bandwidth{
type pce-type:bandwidth;
description "bandwidth";
}
leaf request-latency{
type uint32{
range 0..4294967295;
}
description "latency";
}
leaf path-latency{
type uint32{
range 0..4294967295;
}
}
leaf path-metric{
type uint32;
description "The metric value of this path";
}
leaf include-affinity-any{
type pce-type:affinity;
}
leaf include-affinity-all{
type pce-type:affinity;
description "include-affinity-all";
}
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leaf exclude-affinity{
type pce-type:affinity;
}
leaf setup-priority{
type uint8 {
range "0 .. 7";
}
}
leaf holdup-priority{
type uint8 {
range "0 .. 7";
}
}
}
/*************************************************************
* rpc
**************************************************************/
rpc query-te-tunnels-nbi{
description "Tunnels generated through NBI, E2E sync and adopted, state is up";
input{
leaf src-ne-id{
type yang:uuid;
mandatory true;
}
leaf dst-ne-id{
type yang:uuid;
mandatory true;
}
leaf tunnel-name{
type pce-type:tunnel-name;
description "Tunnel Name";
mandatory false;
}
}
output{
container te-tunnel-brief{
uses te-tunnel-brief-grouping;
}
}
}
/***************************************************************
* notification
***************************************************************/
notification tunnel-besteffort{
leaf tunnel-name{
type leafref{
path "/ute-tunnel:ute-tunnel-oper/ute-tunnel:p2p-tunnel/ute-tunnel:tunnels/ute-tunnel:tunnel/ute-tunnel:tunnel-name";
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}
description "Tunnel Name";
}
description "Tunnel downgrades to besteffort";
}
notification tunnel-besteffort-clear{
leaf tunnel-name{
type leafref{
path "/ute-tunnel:ute-tunnel-oper/ute-tunnel:p2p-tunnel/ute-tunnel:tunnels/ute-tunnel:tunnel/ute-tunnel:tunnel-name";
}
description "Tunnel Name";
}
description "Tunnel upgrades to main LSP";
}
notification tunnel-unprotected{
leaf tunnel-name{
type leafref{
path "/ute-tunnel:ute-tunnel-oper/ute-tunnel:p2p-tunnel/ute-tunnel:tunnels/ute-tunnel:tunnel/ute-tunnel:tunnel-name";
}
description "Tunnel Name";
}
description "Tunnel downgrades to non protection";
}
notification tunnel-unprotected-clear{
leaf tunnel-name{
type leafref{
path "/ute-tunnel:ute-tunnel-oper/ute-tunnel:p2p-tunnel/ute-tunnel:tunnels/ute-tunnel:tunnel/ute-tunnel:tunnel-name";
}
description "Tunnel Name";
}
description "Tunnel upgrades to protection";
}
notification tunnel-overlap{
leaf tunnel-name{
type leafref{
path "/ute-tunnel:ute-tunnel-oper/ute-tunnel:p2p-tunnel/ute-tunnel:tunnels/ute-tunnel:tunnel/ute-tunnel:tunnel-name";
}
description "Tunnel Name";
}
description "Tunnel's primary and secondary LSPs are overlap";
}
notification tunnel-overlap-clear{
leaf tunnel-name{
type leafref{
path "/ute-tunnel:ute-tunnel-oper/ute-tunnel:p2p-tunnel/ute-tunnel:tunnels/ute-tunnel:tunnel/ute-tunnel:tunnel-name";
}
description "Tunnel Name";
}
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description "Tunnel's primary and secondary LSPs completely separate";
}
notification tunnel-constraint-unsatisfied{
leaf tunnel-name{
type leafref{
path "/ute-tunnel:ute-tunnel-oper/ute-tunnel:p2p-tunnel/ute-tunnel:tunnels/ute-tunnel:tunnel/ute-tunnel:tunnel-name";
}
description "Tunnel Name";
}
description "Tunnel new constraint is unsatisfied";
}
notification tunnel-constraint-unsatisfied-clear{
leaf tunnel-name{
type leafref{
path "/ute-tunnel:ute-tunnel-oper/ute-tunnel:p2p-tunnel/ute-tunnel:tunnels/ute-tunnel:tunnel/ute-tunnel:tunnel-name";
}
description "Tunnel Name";
}
description "Tunnel new constraint is satisfied";
}
}<CODE ENDS>
Figure 16: Network TE Tunnel Yang File
6. Security Considerations
The configuration, state, action and notification data defined using
YANG data models in this document are likely to be accessed via the
protocols such as NETCONF [RFC6241] etc. Hence, YANG implementations
MUST comply with the security requirements specified in section 15 of
[RFC6020]. Additionally, NETCONF implementations MUST comply with
the security requirements specified in sections 2.2, 2.3 and 9 of
[RFC6241] as well as section 3.7 of [RFC6536].
7. IANA Considerations
This document has no actions for IANA.
8. Contributors
The following people all contributed to creating this document,
listed in alphabetical order:
TBD
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9. Acknowledgements
This document has benefited from reviews, suggestions, comments and
proposed text provided by the following members, listed in
alphabetical order:xxx.
Part of the initial draft of this document was picked up from
previous documents, and this section lists the acknowledgements from
them.
From "xxx" [xxx]
The following people all contributed to creating this document,
listed in alphabetical order:
xxx, Huawei Technologies
This document has benefited from reviews, suggestions, comments and
proposed text provided by the following members, listed in
alphabetical order: xxx.
The authors of "xxx" [xxx] were:
xxx , NetCracker
The initial draft of this document merged one document, and this
section lists the acknowledgements from it.
From "draft-jiang-opsawg-nettunnel-model-yang"
The authors of this draft would like to thank the following persons
for the provided valuable feedback and contributions: xxx contributed
to an early version of this draft.
The authors of "draft-jiang-opsawg-nettunnel-model-yang" were:
TBD
The authors of this draft would like to thank the following persons
for the provided valuable feedback: TBD
10. References
10.1. Normative References
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[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119,
DOI 10.17487/RFC2119, March 1997,
<http://www.rfc-editor.org/info/rfc2119>.
10.2. Informative References
[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,
<http://www.rfc-editor.org/info/rfc3209>.
[RFC6241] Enns, R., Ed., Bjorklund, M., Ed., Schoenwaelder, J., Ed.,
and A. Bierman, Ed., "Network Configuration Protocol
(NETCONF)", RFC 6241, DOI 10.17487/RFC6241, June 2011,
<http://www.rfc-editor.org/info/rfc6241>.
[RFC6536] Bierman, A. and M. Bjorklund, "Network Configuration
Protocol (NETCONF) Access Control Model", RFC 6536,
DOI 10.17487/RFC6536, March 2012,
<http://www.rfc-editor.org/info/rfc6536>.
Authors' Addresses
Rui Jiang
Huawei Technologies
Huawei Bld., No.156 Beiqing Rd.
Beijing 100095
China
Email: jiangrui1@huawei.com
Zhenbin Li
Huawei Technologies
Huawei Bld., No.156 Beiqing Rd.
Beijing 100095
China
Email: lizhenbin@huawei.com
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