ciscos open device programmability strategy: open discussion

Cisco's Open Device Programmability Strategy An Open Discussion

Robert Grasby, Senior Product Manager

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© 2016 Cisco and/or its affiliates. All rights reserved. Cisco Public

“Southwest Is Sending Its Oldest

Planes to Early Retirement” - Skift, April 2016

“Labor and Training Issues Push Southwest to

Retire Its 737 Classics Next Year”- CrankyFlyer.com, May 2016

“Southwest To Accelerate 737

Classic Subfleet Retirement”- Aviation Daily, April 2016

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737 “Classic” 737 600/700/800/900

737MAX

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IOS-XE IOS-XR

NX-OS

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• Cisco Open Device Programmability

• Model Driven Automation

• Industry Standardization

• Cisco Roadmap

• Developer Resources

• Conclusion

Agenda

Device Programmability


Cisco Digital Network ArchitectureOpen, Software-driven, Service-centric

Virtualization | Automation | Analytics | Cloud

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Cisco Digital Network Architecture

PrinciplesAutomation

Abstraction & Policy Control

from Core to Edge

Open & Programmable | Standards-Based

Open APIs | Developers Environment

Cloud Service ManagementPolicy | Orchestration

Virtualization

Physical & Virtual Infrastructure | App Hosting

Analytics

Network Data,

Contextual Insights

Insights &

Experiences

Automation

& Assurance

Security &

Compliance

Network-Enabled Applications

Cloud Enabled | Software Delivered

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Cisco Open Device Programmability

Physical and Virtual Network Infrastructure

Open Device Programmability

Programmable

Interfaces

Open

Protocols

Configuration

ManagementTraffic

Engineering

Telemetry &

TroubleshootingSimplified

Deployment

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NETCONF RESTconf gRPC

Open Device Programmability

Device Features

Interface BGP QoS ACL …

SNMP

YANG Data Model

Open

Models

Native

Models

Open

Models

Native

Models


Configuration Operation

Programmable

Interfaces

Cisco ONE Foundation

Shipping now on IOS-XR.

Available on IOS-XE, NX-OS

platforms in July ’16

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Interface “Stack”

Device Features


SNMP

YANG Data Model

Open

Models

Native

Models

Open

Models

Native

Models



Programmable

Interfaces

Protocol

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Protocols

StandardIETF RFC 6241 IETF draft Open source

Optimized for

Networking ✓ ✓✗

(designed for generic

client/server communications)

Session

Oriented ✓ ✓ ✓

Connection

Oriented ✓ ✗ ✓

Connection

SecuritySSH or SOAP HTTPS HTTPS

RESTconfNETCONF gRPC

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Model Driven Automation




Device Features


SNMP

YANG Data Model

Open

Models

Native

Models

Open

Models

Native

Models



Programmable

Interfaces

Data Model

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Defining Objects In Network Management

Information Model

• Conceptual abstraction

• Implementation guide

• Protocol neutral

Information vs Data Models (RFC3444)

Data Model

• Lower level abstraction

• Implementation specific details

• Protocol-specific constructs

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YANG Data Modeling Language (RFC6020)

• Human readable

• Hierarchical configuration

• Extensible through augmentation

• Formal constraints for configuration validation

• Reusable types and groupings

• Modularity through modules and sub-modules

• Defined versioning rulesYANG Data Model

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YANG Data Model Structure

pyang -f tree [email protected]

module: ietf-interfaces

+--rw interfaces

| +--rw interface* [name]

| +--rw name string

| +--rw description? string

| +--rw type identityref

| +--rw enabled? boolean

| +--rw link-up-down-trap-enable? enumeration {if-mib}?

+--ro interfaces-state

+--ro interface* [name]

+--ro name string

+--ro type identityref

+--ro admin-status enumeration {if-mib}?

+--ro oper-status enumeration

+--ro last-change? yang:date-and-time

+--ro if-index int32 {if-mib}?

…

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Device Features


SNMP

YANG Data Model

Open

Models

Native

Models

Open

Models

Native

Models



Programmable

Interfaces

Types

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• Industry definition

• Compliant with standard (IETF, ITU, OpenConfig, etc) definition

• Vendor specific extensions

Example: ietf-diffserv-policy.yang(IETF Diffserv data model)

• Cisco definition

• Unique to a Cisco operating system

Example: Cisco-IOS-XR-ipv4-bgp-cfg.yang(IOS-XR BGP data model)

YANG Data Model Types

Open

Models

Native

Models

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YANG Data Model Terminology and Relationship

Modeling Language YANG

Encoding XML JSON

Schema YANG Data Model

Protocol RESTCONFNETCONF GRPC

SDK

API Python Ruby JAVA C Erlang …

YANG Development Kit APIC-EM Ansible …

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Industry Standardization


Standardization Timeline

RFC 4741

NETCONF (1.0)

Protocol

RFC 6020

YANG (1.0)

Data Modeling

Language

RFC6020bis

YANG (1.1)

Data Modeling

Language

RFC 6241

NETCONF (1.1)

Protocol

December

2006

October

2010Now

June

2011

RESTCONF Protocol

IETF “Last Call”

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Open Model Standardization

≈ 38 defined, 200 draft802.1x and 802.1q models≈ 120 defined

MEF 38 and 39 for OAM > 680 defined≈ 45 defined

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IETF YANG Model Submissions

By Vendors

54

Huawei 50

Juniper 40

Ericsson 27

Alcatel-Lucent 7

Ciena 11

ZTE 9

Brocade 7

Intel 1

By “YANG” Companies

Yumarkworks 7

Tail-f 8

By Operators

Google 4

Verizon 2

AT&T 5

Telefonica 5

Orange 9

Level 3 3

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Cisco Roadmap


NETCONF Platform Roadmap

Shipping Q3CY16 Q4CY16* CY17*

IOS-XR ASR 9000

NCS 1000

NCS 5000

IOS-XE IOS-XE 16.3

Catalyst 3650

Catalyst 3850

ASR 1000

ISR 4000

CSR 1000v

ISRv

IOS-XE 16.4

cBR

ASR 900

IOS-XE 3.10

Catalyst 4500

NX-OS E Release

Nexus 3000

Nexus 9000

Release tbd

Nexus 5000

Nexus 7000

* Not committed

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YANG Model Coverage by Platform

Open Models Native Models

IOS-XR https://github.com/YangModels/yang/tree/master/vendor/cisco/xr

IOS-XE

@ initial

release

• IETF-Interfaces

• IETF-VRF Infra

• IETF-IPv4/IPv6 Static

Routing

• IETF-OSPF v2/v3

• ITEF-IPv4/IPv6 RIB

• IETF-Policy

• IETF-QoS (shape, bandwidth

and priority)

• Cisco-MPLS static

• Cisco-VxLAN

• BFD

• G8032

• MPLS-TE

• E-OAM

• VPLS

• ISIS

• ACL

• GRE

• CFM

• Interfaces

• BGP

• Static Routing

• MPLS Static

• EVPN

• VLAN

• L2VPN

• OTV

• Inter-AS

• Bridge Domain/EVC

• DMVPN

• RPL

• OSPF

• VRF

• Policy/QoS

• NHRP

• PfR

• EIGRP

• WAAS

• AVC-NBAR

• AVC-ART

• ESON

• Snort

• SourceFire

• ZBFW

• FNF

• RIB

• LISP

• IPSec

• VTP

• Spanning Tree

• AAA

• TACACS

• SNMP

• NTP

• MSDP

• IGMP

• PIM

NX-OS

@ initial

release

• Open Config Interfaces

• Open Config Static Route

• Open Config Route Policy

• Open Config VLAN

• ACL

• QoS

• Segment Routing

• EVPN/VxLAN

• ARP/AM

• IPv6/ICMPv6

• RBAC

• Tunnels

• VRRPv2

• OSPFv2

• Syslog

• NTP

• Route Policy

• HSRP

• URIB

• SNMP

• VxLAN

• L2RIB

• MPLS

• Static Route

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https://github.com/YangModels/yang/tree/master/vendor/cisco/xr

Developer Resources


“The best way to learn about network programmability is to jump in and get our hands dirty”- Some “Wise Guy”

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Details on supported interfaces and protocols

• Learning Labs

• Sandboxes

• Code Samples

• Videos

• Communities

• Support

• And more ….

developer.cisco.com/site/odp/

Cisco DevNet

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https://developer.cisco.com/site/odp/


YANG GitHub Repository

https://github.com/YangModels/yang/tree/master/vendor/cisco

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https://github.com/YangModels/yang/tree/master/vendor/cisco

Conclusion


Summary

• Open device programmability is the foundation of a Digital Network Architecture

• Data models are key for configuration management and telemetry (not protocols or encoding)

• YANG is the “open” data modeling language

• Cisco is delivering YANG data models across switching and routing to enable “Open Device Programmability”

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Network Programmability Cisco Education OfferingsCourse Description Cisco Certification

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self-paced courses

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Designing with Cisco Network

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infrastructure to application integration through programmability.

Cisco Network

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Implementing Cisco Network

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Learn how to implement and troubleshoot open IT infrastructure

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Cisco Network

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For more details, please visit: http://learningnetwork.cisco.com

Questions? Visit the Learning@Cisco Booth or contact [email protected]

DEVNET-1028 34

http://learningnetwork.cisco.com/

mailto:[email protected]


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ciscos open device programmability strategy: open discussion

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