Introduction to Catalyst Programmability

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2 BRKCRS-1450 Introduction to Catalyst Programmability Fabrizio Maccioni, Technical Marketing Engineer

Find this session in the Cisco Live Mobile App 2. Click Join the Discussion 3.

3 Cisco Spark How Questions? Use Cisco Spark to communicate with the speaker after the session 1. Find this session in the Cisco Live Mobile App 2. Click Join the Discussion 3. Install Spark or go directly to the space 4. Enter messages/questions in the space cs.co/ciscolivebot#brkcrs Cisco and/or its affiliates. All rights reserved. Cisco Public

Agenda Intro Device Provisioning Device APIs Data Models & Tools Model Driven Telemetry Python Scripting Application Hosting Config Mngt Tools Cisco DevNet (Why

4 Agenda Intro Device Provisioning Device APIs Data Models & Tools Model Driven Telemetry Python Scripting Application Hosting Config Mngt Tools Cisco DevNet (Why Programmability) (PXE, ZTP, PnP) (NETCONF/RESTCONF, XML/JSON) (YANG, YangExplorer/YDK) (Oper Data Models, ELK stack) (On-Box, Off-Box) (VM, LXC, Docker) (Ansible, Puppet)

5 Why automation and programmability? Administrator Needs to configure hostname switch1 int g0/0 ip address /24 vlan 100,200, hostname switch6 int g0/0 ip address /24 vlan 100,200,300 BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 5

7 By 2020, networking personnel with experience in Ansible, Python and/or integrating systems via APIs will receive a 30% salary premium (on average) over those with only CLI-based skills. Andrew Lerner, Gartner: BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 7

8 IOS XE 16.x: Intent-based Network Operating System I N T E N T C O N T E X T Intent-based Network Infrastructure optimized for enterprise networks wired and wireless access, aggregation, core, and WAN open and flexible IOS XE 16.x standards-based APIs BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 8

Solutions DNA Center Standards Based Interoperability Model Driven

Automation Analytics SDN Controllers CI/CD Tools NMS Systems Zero

Intent-based Network Infrastructure Intent-based Network

9 IOS XE 16.X enables Session Focus Cisco Solutions 3 rd Party Integration DIY Solutions DNA Center Standards Based Interoperability Model Driven Programmability Custom Development Model Driven Telemetry Policy Automation Analytics SDN Controllers CI/CD Tools NMS Systems Zero Touch Provisioning App Hosting Guest Shell (On Box Python) Intent-based Network Infrastructure Intent-based Network Infrastructure Intent-based Network Infrastructure Cisco Catalyst 3850 Cisco Catalyst 9000 BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 9

IOS XE: Automating Network Device Lifecycle Goal: Continuously upgrade network, incrementally

operational state Provisioning Automation Tools: PXE, ZTP, PnP Python Scripting Goal: Apply

Tools: Operating Data Models Telemetry Optimize Tools: Data Models Programmable Interfaces

11 IOS XE: Automating Network Device Lifecycle Goal: Continuously upgrade network, incrementally and safely Tools: Patching Config/Replace Upgrade Install Configure Goal: Get devices into an operational state Provisioning Automation Tools: PXE, ZTP, PnP Python Scripting Goal: Apply configuration to the device Goal: Add dynamic services, optimize behavior and trouble shooting Tools: Operating Data Models Telemetry Optimize Tools: Data Models Programmable Interfaces Python Scripting BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 11

12 Device Provisioning

13 Device Provisioning Automation updates Pre-boot Execution Environment (PXE) Client Boot Server New Zero Touch Provisioning ZTP Server Cisco Network Plug and Play PXE Booting Switch ZTP script ZTP Agent Switch PnP Agent PnP Agent Switch Boot Image Source Programmable Interfaces Network Device Device Open Open Open (via APIC-EM) Ideal for heterogeneous / multi-vendor network environments Optimized for Cisco networks (highly secure and scalable) BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 13

with a minimal config using Auto Config Once

14 Use Case: CL Barcelona NOC Automated Provisioning Visit CL NOC Switch is staged with a minimal config using Auto Config Once in place switch boots and EEM calls home Switch gets its latest config Call home continues so the switch is always up to date Tool is the single source of truth! BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 15

15 Open Programmable Device APIs

16 The Four Ages of Device Interfaces: Telnet SSH [v2] Notepad cut-and-paste SDN Controllers Python REST YANG Model NETCONF RESTCONF Containers BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 17

19 Open Programmable APIs Simplified View NETCONF RESTCONF gnmi/grpc CLI NETCONF RESTCONF gnmi grpc Protocols Parser Data Model YANG Models Device Features Interface BGP QoS ACL Device Features BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 23

20 YANG Data Models

CLI YANG Models Human Oriented Interface Machine Oriented Interface

22 Protocol Data-Model Data Models Interface Model definition A Data-Model Explicitly and precisely defines Data Structure, Syntax and Semantics BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 26

23 YANG Models Example YANG Models Data XML Payload Gig 1/0/1 CL rocks! enabled YANG Models Data Models defined using the YANG language BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 29

24 YANG Configuration Model Example* container ip { YANG list vrf { description "Configure an IP VPN Routing/Forwarding instance"; } } leaf name { type string; } leaf rd { description "Specify Route Distinguisher"; type rd-type; } <ip> <vrf> <name>vrf_red</name> <rd>65000:1</rd> </vrf> <vrf> <name>vrf_green</name> <rd>65000:2</rd> </vrf> </ip> ip vrf vrf_red rd 65001:1! ip vrf vrf_green rd 65001:2! XML CLI * Note: YANG model simplified for clarity BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 30

25 Data Models: Open vs Native Open Models Industry definition Compliant with standard (IETF, ITU, OpenConfig, etc) Native Models Cisco definition Unique to a Cisco operating system Example: ietf-diffserv-policy.yang (IETF Diffserv data model) Example: Cisco-IOS-XR-ipv4-bgp-cfg.yang (IOS-XR BGP data model) Open Models are a subset of the Native Models BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 33

26 Native and Open Models Benefits: Use open models where available Use native models for functionality not yet in open models Open Models (i.e. OpenConfig) Map IOS XE Native Models Device Features Interface BGP QoS ACL BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 34

27 Important Point! Cisco s data models and IETF/OpenConfig data models are just two ways of doing the same thing. <interfaces xmlns="urn:ietf:params:xml:ns:yang:ietf-interfaces"> <interface> <name>gigabitethernet 1/0/24</name> <description>configured by NETCONF!</description> </interface> </interfaces> switch# show run interface g1/0/24 interface GigabitEthernet 1/0/24 Both of these do exactly the same thing! description Configured by NETCONF! IETF-defined model <native xmlns=" <interface> <GigabitEthernet> <name>1/0/24</name> <description>configured by NETCONF!</description> </GigabitEthernet> </interface> </native> Cisco-defined NED model BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 35

28 Data Model Modularization IOS XE DataPath Policy OSPF Element NED Data Models Routing Switching BGP Wireless AAA NBAR/Pfr Security MPLS In Service Model Updates BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 36

32 Encoding Formats

33 Protocols Data Formats NETCONF RESTCONF gnmi/grpc NETCONF RESTCONF gnmi grpc NETCONF RESTCONF gnmi grpc XML JSON (XML) GPB (XML/JSON) Encoding Data Model SSH HTTP HTTP/2 Device Features Interface BGP QoS ACL BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 42

34 Structured vs Unstructured Data Un-structured Structured John Smith What is this? His age? The year he graduated college? Meaning of life, the universe & everything? Name: Age: Phone: Keys John Smith Values BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 44

35 Unstructured Data Note inconsistent key format! switch1# sh int e1/10 Ethernet1/10 is up Hardware: 1000/10000 Ethernet, address: d (bia d0.9331) Description: To UCS-11 MTU 1500 bytes, BW Kbit, DLY 10 usec, reliability 255/255, txload 1/255, rxload 1/255 Switchport monitor is off EtherType is 0x8100 Last link flapped 8week(s) 2day(s) Last clearing of "show interface" counters 1d02h 30 seconds input rate 944 bits/sec, 118 bytes/sec, 0 packets/sec 30 seconds output rate bits/sec, bytes/sec, 5221 packets/sec BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 45

XML vs JSON vs YAML lightweight, text-based, language-independent data interchange formats <tag>value</tag> key : value key: value <interfaces xmlns:= [ ]yang:ietf-interfaces > <interface>

36 XML vs JSON vs YAML lightweight, text-based, language-independent data interchange formats <tag>value</tag> key : value key: value <interfaces xmlns:= [ ]yang:ietf-interfaces > <interface> <name>eth0</name> <type>ethernetcsmacd</type> <location>0</location> <enabled>true</enabled> <if-index>2</if-index> </interface> </interfaces> { } "ietf-interfaces:interfaces": { "interface": [ { "name": "eth0, "type": "ethernetcsmacd, "location": "0, "enabled": true, "if-index": 2 } ] } --- ietf-interfaces:interfaces: interface: name: eth0 type: ethernetcsmacd location: 0 enabled: true if-index: 2 BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 49

37 Protocols: NETCONF RESTCONF gnmi/grpc NETCONF RESTCONF gnmi/grpc NETCONF RESTCONF Data Model Device Features gnmi grpc NETCONF XML RESTCONF JSON (XML) gnmi grpc GPB (XML/JSON) SSH HTTP HTTP/2 Protocols Interface BGP QoS ACL

NETCONF definition NETCONF is a protocol defined by the IETF to install, manipulate, and delete the configuration of network devices V 1.0 RFC 4741 1.

38 NETCONF definition NETCONF is a protocol defined by the IETF to install, manipulate, and delete the configuration of network devices V 1.0 RFC Base NETCONF Protocol RFC 4742 NETCONF over SSH V 1.1 RFC Base NETCONF Protocol RFC 6242 NETCONF over SSH IOS XE Extensions RFC 5277 Notifications RFC 5717 Partial Locking RFC 6243 With defaults RFC 6020 YANG Protocol Stack Content Operations Messages Transport BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 52

39 Main NETCONF Operations Main Operations Description <get> (close to show? ) Retrieve running configuration and device state information <get-config> (close to show run ) Retrieve all or part of specified configuration datastore <edit-config> (close to conf t ) Loads all or part of a configuration to the specified configuration datastore BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 53

NETCONF Highlights Transactional Either all configuration

Single Device and Network-wide level Error Management OK or

169 -s netconf Models Download from a Device BRKCRS-1450

40 NETCONF Highlights Transactional Either all configuration is applied or nothing Avoids inconsistent state Both at Single Device and Network-wide level Error Management OK or error code Capability Exchange ssh -p 830 -s netconf Models Download from a Device BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 57

41 Enabling NETCONF: 3 Steps C3850-1#conf t Enter configuration commands, one per line. End with CNTL/Z. C3850-1(config)#aaa new-model C3850-1(config)#aaa authentication login default local C3850-1(config)#aaa authorization exec default local C3850-1(config)#username admin password cisco C3850-1(config)#line vty 0 15 C3850-1(config-line)#transport input all C3850-1(config)#netconf-yang C3850-1(config)# Enable AAA Enable SSH Enable NETCONF BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 58

Data Models Native Configuration and Operation gnmi / grpc

for client-server communications REST-like protocol for

42 REST vs RESTCONF: not the same! API REST GET POST PUT NETCONF RESTCONF Open RESTCONF YANG Data Models Native Configuration and Operation gnmi / grpc DELETE Device Features Interface BGP QoS ACL SNMP A framework for client-server communications REST-like protocol for accessing YANG models BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 59

43 RESTCONF vs NETCONF Operations RESTCONF GET As compared to NETCONF <get-config>, <get> POST <edit-config> (operation= create ) PUT <edit-config> (operation= create/replace ) DELETE <edit-config> (operation= delete ) BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 61

44 YANG Tools: PYANG YangExplorer YDK

PYANG Tool Tool to validate and navigate YANG Models schema tree YANG Model depth option pyang -f tree ietf-interfaces@2014-05-08.

46 YangExplorer Tool (3) Define Operations (1) Select a Profile Python Scripts YDK Check Capabilities (2) Browse Models (4) Create RPC (5) Run RPC YangExplorer BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 67

47 YDK: YANG Development Kit Any Model Any Transport Any Language Wide support of Yang Models Open or Native Support for NETCONF and RESTCONF Support for Python And C++ APIs BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 68

48 Model Driven Telemetry

Scalable Reduced CPU Load BRKCRS-1450 2018 Cisco

49 Model Driven Telemetry Export enriched, consistent and concise data with context from network devices for a better user and operator experience Periodic or On-Change Structured Data Scalable Reduced CPU Load BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 71

50 Model Driven Telemetry tcollector Collector Programmable Interfaces Subscription Periodic or on-change NETCONF RESTCONF grpc YANG Data Models Open Native Configuration and Operation Physical and Virtual Network Infrastructure Device Features Interface BGP QoS ACL SNMP BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 74

Model Driven Telemetry in-a-box Demo Ubuntu VM LABCRS-2222 DEVNET-1693 4 3 IETF Client

XE Programmability, all week DEVNET-1693: Model-Driven Telemetry for IOS XE, Feb 01, 04:00 p.

51 Model Driven Telemetry in-a-box Demo Ubuntu VM LABCRS-2222 DEVNET IETF Client Notifications 2 1 Subscriptions NETCONF YANG Cisco Catalyst 9300 WISP LABCRS-2222: Open IOS XE Programmability, all week DEVNET-1693: Model-Driven Telemetry for IOS XE, Feb 01, 04:00 p.m. - 04:45 p.m. BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 75

52 Application Hosting IOS XE

53 Networking today... Fast x86 processor SSD expansion (Cat 9400) Linux-based OS Capable of multiple apps (Pictured: Catalyst 9300) BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 78

54 Application Hosting Support Varies by Platform VM VM LXC LXC LXC Multiple Apps App 1 Custom App Guest Shell Built-in LXC VMAN Cisco Application Framework (CAF)/IOx LXC: Linux Container BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 80

Application Hosting: CAF/IOx REST REST REST IOx Client External Management Tools Fog Director DNA-C WoS Demo On-Box Management Tools CLI Local Manager REST Cisco

55 Application Hosting: CAF/IOx REST REST REST IOx Client External Management Tools Fog Director DNA-C WoS Demo On-Box Management Tools CLI Local Manager REST Cisco Application Framework (CAF)/IOx LXC Linux Process VM Linux Process Kernel Host OS (IOS XE Kernel) BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 81

App Hosting Interface: DNA-Center demo @ Ent WoS Enterprise Single Pane of Glass Consistent

management Integrated with DNA-C Assurance Apps deployed at run time for Monitoring and

56 App Hosting Interface: DNA-Center Ent WoS Enterprise Single Pane of Glass Consistent DNA-C workflows App Store Integrated Fog Director Provisioning of multiple devices Change management Integrated with DNA-C Assurance Apps deployed at run time for Monitoring and Troubleshooting BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 83

58 App Hosting Interface: CLI cat9k# conf t cat9k(config)# iox cat9k(config)# ip http server cat9k# sh iox-service... IOx Infrastructure Summary: IOx service (CAF) : Running IOx service (HA) : Not Running IOx service (IOxman) : Running Libvirtd : Running cat9k# sh app-hosting? detail Detail information about appliance list List the appliance resource available resources utilization Utilization information about appliance cat9k# sh app-hosting list No App found cat9k# app-hosting? activate Application activate connect Application connect deactivate Application deactivate install Application install move Move File start Application start stop Application stop uninstall Application uninstall BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 87

59 Python

Python: Why not C, Ruby, Perl, TCL, Go, etc.

And it s well supported in the networking

60 Python: Why not C, Ruby, Perl, TCL, Go, etc.? Easy to Learn Interactive shell Easy to begin with simple scripts Libraries! Extensive libraries, like an app store for developers Read Excel, output PDF, draw graphs, etc. And it s well supported in the networking community! BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 89

61 Python example Guido van Rossum Prints name and ip address of interfaces that are up from show ip int brie Monty Python's Flying Circus BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 90

62 Python 2 vs 3 Python >>> print "Hello World! Hello World! Python 2 Most common version Default installation on Linux Most libraries Losing popularity Python 3.6.0a4 >>> print "Hello World!" SyntaxError: Missing parentheses >>> print ("Hello World") Hello World Python 3 Several language enhancements Often separate installation Not all libraries supported Commonly used in books/courses Python 2 and 3 are not mutually compatible! BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 92

PIP Install $ pip install netaddr Downloading/unpacking netaddr Downloading netaddr-0.7.19-py2.py3-none-any.whl (1.6MB): 1.

63 PIP Install $ pip install netaddr Downloading/unpacking netaddr Downloading netaddr py2.py3-none-any.whl (1.6MB): 1.6MB downloaded Installing collected packages: netaddr Successfully installed netaddr Cleaning up... PDFrw YDK-Py OpenPy XL Python NCClient BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 93

Virtual Environments V-Env1 V-Env2 V-Env3 Python 2.

4.5 Jinja2 = 2.8.1 Jinja2 = 2.7 NCClient = 0.4.5 paramiko = 2.

4.1 BRKCRS-1450 2018 Cisco and/or its affiliates.

65 Virtual Environments V-Env1 V-Env2 V-Env3 Python 2.5 Python 2.7 Python 2.7 Requests = NCClient = Jinja2 = Jinja2 = 2.7 NCClient = paramiko = Requests = NCClient = openpyxl = BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 95

66 Python on IOS XE

67 Using Python with IOS XE Devices Off-Box Python IOS XE On-Box Python IOS XE Python Linux Server SSH/NETCONF IOS IOS-XE Device Python IOS IOS-XE Device scripts executed externally from switch: configuration management automation telemetry / operational data controller use cases including APIC-EM / Cisco Network PNP scripts executed locally on switch: provisioning automation (ZTP) automating Embedded Event Manager application development IOT BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 99

68 Guest Shell Virtualized Linux Environment On Your Switch IOS XE Secure Linux shell environment On-box rapid prototyping Application Hosting Disabled by default switch# guestshell enable Linux applications Guest Shell Linux Container API Network OS BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 100

69 Configuration Management Tools

Configuration Management Tools Desired State (Intent) configuration CMT Server Device In use for years to automate servers Ensure software packages are installed, services running Becoming useful for

70 Configuration Management Tools Desired State (Intent) configuration CMT Server Device In use for years to automate servers Ensure software packages are installed, services running Becoming useful for managing networking devices as well Declarative model (intent): not scripting! Idempotency Agent vs Agent-less Architectures BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 102

72 Architecture: agent vs agent-less TODAY Intent CLI NETCONF Puppet Agent config CLI Parser NETCONF RESTconf grpc Data Model LXC Device Features Interface BGP QoS ACL LXC: Linux Container BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 104

73 Architecture: agent-less + APIs Soon All Platforms CLI Parser NETCONF RESTconf grpc Data Model Device Features Interface BGP QoS ACL * not committed by ISV (independent software vendor) 2018 Cisco and/or its affiliates. All rights reserved. Cisco Public 105

IOS configuration ios_facts Collect facts from remote devices ios_interface Manage Interface ios_logging Manage logging ios_ping Tests reachability

74 Ansible release 2.4 (September 2017) Cisco IOS/IOS-XE Core Modules ios_banner Manage multiline banners ios_command Run commands on remote devices ios_config Manage Cisco IOS configuration ios_facts Collect facts from remote devices ios_interface Manage Interface ios_logging Manage logging ios_ping Tests reachability ios_static_route Manage static IP routes ios_system Manage System attributes ios_user Manage of local users ios_vrf Manage VRF definitions BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 108

76 Cisco Catalyst 9000 CI/CD with Puppet CentOS VM 1 Puppet code Manifests 2 Checkpoint 3 Config 4 Validation 5 Save Config NETCONF YANG Cisco Catalyst 9300 BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 110

77 Cisco Catalyst 9000 CI/CD with Puppet CentOS VM 1 Puppet code Manifests 2 Checkpoint 3 Config 4 Validation 5 Rollback NETCONF Cisco Catalyst 9300 BRKCRS-1450 Tech Field Day Cisco and/or its affiliates. All rights reserved. Cisco Public 111

78 NSO Model Based Architecture Applications Physical Networks Service Manager Device Manager Network Element Drivers (NEDs) Virtual Networks Engineers REST, NETCONF, Java, Python, Erlang, CLI, Web UI NETCONF, REST, SNMP, CLI, etc VNFM Controller Apps EMS and NMS Network Apps Service Model Device Model Logically centralized network services Model based architecture Data models written in YANG (RFC 6020) Structured representations of: Service instances Network configuration and state No hard-coded assumptions about: Network services Network architecture Network devices Mapping service operations to network configuration changes Transactional integrity Multiprotocol and multivendor support BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 112

NSO at Cisco Live Design Clinics Opportunity for customers to ask questions without an appointment Located in The hub (Hall 6) Opening hours of The Hub: Monday: 8:00 19:30 Tuesday: 8:00 19:30

79 NSO at Cisco Live Design Clinics Opportunity for customers to ask questions without an appointment Located in The hub (Hall 6) Opening hours of The Hub: Monday: 8:00 19:30 Tuesday: 8:00 19:30 Wednesday: 8:00 19:00 Thursday: 8:00 18:30 Friday: 8:00 13:30 BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 113

80 Cisco DevNet

Cisco DevNet Learning Labs Sandboxes API Documentation Python, YDK, REST And More!

IOS XE on DevNet https://developer.cisco.

Cisco DevNet video course: from understanding and using JSON, XML and YAML to Edge computing! https://developer.cisco.com/video/net-prog-basics?

85 Demo EEM

86 Demo: DevOps Notifications 5 Spark posts diff to room 6 Tropo text and call 4 sends diff to Spark 6 sends diff to Tropo 2 EEM Triggers on-box Python script 1 EEM Config Change 3 Python script diffs configs EEM Catalyst 9300 BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 122

87 Auto Back-up Use Case On-Box Python and EEM 4 Python script creates a back-up file and sends it to a tftp server Catalyst 3850 EEM CLEU EEM Triggers on-box Python script BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 123

88 ChatOps Use Case 5 Spark posts diff to room 4 Python script diffs configs and sends diff to Spark Catalyst 3850 EEM TWTV 3 EEM Triggers on-box Python script BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 124

89 Conclusion

91 IOS XE Programmability CL Barcelona Breakout Sessions: BRKCRS-1450: Introduction to Catalyst Programmability Fabrizio Maccioni, Tuesday, Jan 30, 04:45 p.m. - 06:15 p.m. BRKCRS-2451: Scripting Catalyst switches - tools and techniques beyond the basics Jeff McLaughlin, Thursday, Feb 01, 11:30 a.m. - 01:30 p.m. BRKSDN-2666: IOS XE Architecture for Programmability Jeff McLaughlin, Wednesday, Jan 31, 04:30 p.m. - 06:00 p.m. BRKDEV-1368: Effectively Understand and Leverage YANG with NETCONF and RESTCONF for Model Driven Bryan Byrne and Hank Preston, Tuesday, Jan 30, 02:15 p.m. - 04:15 p.m. WISP Labs: LABCRS-2222: Open IOS XE Programmability, Krishna Kotha, all week BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 127

92 IOS XE Programmability DevNet CL Barcelona 1/2 DEVNET-1693: Model-Driven Telemetry for IOS XE Krishna Kotha, Thursday, Feb 01, 04:00 p.m. - 04:45 p.m. DEVNET-1801: Insights into your WLC with Wireless Streaming Telemetry Jeremy Cohoe, Thursday, Feb 01, 05:00 p.m. - 05:45 p.m. DEVNET-2203: Build a Network Configuration CICD Pipeline Hank Preston, Tuesday, Jan 30, 11:00 a.m. - 11:45 a.m. Thursday, Feb 01, 09:00 a.m. - 9:45 a.m. DEVNET-2556: Dive into Leveraging Python on IOS-XE Ryan Shoemaker, Tuesday, Jan 30, 09:00 a.m. - 9:45 a.m. Thursday, Feb 01, 11:00 a.m. - 11:45 a.m. BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 128

93 IOS XE Programmability DevNet CL Barcelona 2/2 DEVNET-1365: Vagrant Up for the Network Engineer (NX-OS, IOS-XE, IOS-XR) Hank Preston, Tuesday, Jan 30, 10:00 a.m. - 10:45 a.m. Thursday, Feb 01, 01:00 p.m. - 01:45 p.m. DEVNET-3616: NetDevOps Style Configuration Management for the Network Hank Preston, Thursday, Feb 01, 04:00 p.m. - 04:45 p.m. DEVNET-1725: How to Be a Network Engineer in a Programmable Age Hank Preston, Tuesday, Jan 30, 01:00 p.m. - 01:45 p.m. BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 129

94 Cisco Spark How Questions? Use Cisco Spark to communicate with the speaker after the session 1. Find this session in the Cisco Live Mobile App 2. Click Join the Discussion 3. Install Spark or go directly to the space 4. Enter messages/questions in the space cs.co/ciscolivebot#brkcrs Cisco and/or its affiliates. All rights reserved. Cisco Public

Please complete your Online Session Evaluations after each session Complete 4 Session Evaluations & the Overall Conference Evaluation (available from Thursday) to receive your Cisco Live T-shirt All

95 Please complete your Online Session Evaluations after each session Complete 4 Session Evaluations & the Overall Conference Evaluation (available from Thursday) to receive your Cisco Live T-shirt All surveys can be completed via the Cisco Live Mobile App or the Communication Stations Complete Your Online Session Evaluation Don t forget: Cisco Live sessions will be available for viewing on-demand after the event at Cisco and/or its affiliates. All rights reserved. Cisco Public

96 Continue Your Education Demos in the Cisco campus Walk-in Self-Paced Labs Tech Circle Meet the Engineer 1:1 meetings Related sessions BRKCRS Cisco and/or its affiliates. All rights reserved. Cisco Public 132

97 Thank you

Scripting the Catalyst: Beyond the Basics

Scripting the Catalyst: Beyond the Basics Jeff McLaughlin, Principal TME Cisco Spark How Questions? Use Cisco Spark to communicate with the speaker after the session 1. Find this session in the Cisco Live