Download as PDF, PPTX
![© 2019 Cisco and/or its affiliates. All rights reserved. Cisco Public
YANG Model Example
container community-sets {
description “Container for community sets";
list community-set {
key community-set-name;
description "Definitions for community sets";
leaf community-set-name {
type string;
description "name of the community set";
}
leaf-list community-member {
type string {
pattern '([0-9]+:[0-9]+)';
}
description "members of the community set";
}
}
}
community-set CSET1
65172:1,
65172:2,
65172:3
end-set
!
community-set CSET10
65172:10,
65172:20,
65172:30
end-set
!
YANG CLI
58
BRKSPG-2069](https://image.slidesharecdn.com/brkspg-2069-64bit-package-220717112011-cb1743be/85/BRKSPG-2069-64bit-package-pdf-55-320.jpg)
![© 2019 Cisco and/or its affiliates. All rights reserved. Cisco Public
Model Data Example
community-set CSET1
65172:1,
65172:2,
65172:3
end-set
!
community-set CSET10
65172:10,
65172:20,
65172:30
end-set
!
{ "community-sets": {
"community-set": [
{ "community-set-name": "CSET1",
"community-member": [
"65172:1",
"65172:2",
"65172:3" ]
},
{ "community-set-name": "CSET10",
"community-member": [
"65172:10",
"65172:20",
"65172:30" ]
}
]
}
}
JSON CLI
59
BRKSPG-2069](https://image.slidesharecdn.com/brkspg-2069-64bit-package-220717112011-cb1743be/85/BRKSPG-2069-64bit-package-pdf-56-320.jpg)
BRKSPG-2069-64bit-package.pdf
- 2. Akshat Sharma, Technical MarketingEngineer, Cisco BRKSPG-2069 Introduction to the Next-Generation IOS-XR architecture @irakshat @xrdocs
- 3. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Cisco Webex Teams Questions? Use Cisco Webex Teams (formerly Cisco Spark) to chat with the speaker after the session Find this session in the Cisco Events Mobile App Click “Join the Discussion” Install Webex Teams or go directly to the team space Enter messages/questions in the team space How 1 2 3 4 3 cs.co/ciscolivebot#BRKSPG-2069 BRKSPG-2069
- 4. Agenda © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public 4 • Introduction • Software Architecture Overview • Flexible Packaging • Application Hosting • Configuration, Monitoring and Troubleshooting • Examples • Conclusions BRKSPG-2069
- 5.
- 6. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public An Evolved Network Operating System for a Rapidly Changing Web and SP Landscape 6 BRKSPG-2069
- 7. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Key Learning Objectives • At the end of the session, you should be able to: • Appreciate rapidly evolving network infrastructure landscape • Understand how Cisco is evolving IOS-XR network operating systems to meet customer needs • Identify technical principles of Evolved IOS-XR 7 BRKSPG-2069
- 8. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Automating Provisioning Down to Minutes Network Operations Center Day 0 INSTALL Day 1 CONFIGURE Day 2 CLI Script Operating System Upgrade (Manual) Plug in new device Configure new device remotely (Manual) Device up and running Manual staging 4 Hours to 3 Days Plug in new device Device up and running Auto-provisioning 10 to 15 Minutes Automated Boot • Manual device onboarding • Lengthy installation and provisioning procedures Traditional Networking Operations Cloud Scale Networking Operations • Reduced time to install and provision new devices • Faster disaster recovery • Automated device onboarding Operating System Operating System Configuration Cloud Scale Network Operations Traditional Network Operations 8 BRKSPG-2069
- 9. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Traditional NetOps Upended by Evolved Needs of SP Customers * Source: Google Evolved SP/Cloud Scale Network Operations SW Modularity & Extensibility Automation Visibility & Control Day 1 CONFIGURE Day 2 MANAGE & OPTIMIZE Day 0 INSTALL Inflexible SW Manual Provisioning Fragmented Topology View and Complex Routing DevOps • Automated services • Simple to scale • Agile, open software 9 Traditional Network Operations BRKSPG-2069
- 10. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Simplification Better Customer Experience Software Modularity and Extensibility Service Agility Open Innovation Cisco Evolved IOS XR Innovations Designed for Operational Fit Application Engineered Routing Visibility Control Telemetry Automation Automated Boot and Auto-provisioning Data Model Driven APIs Third- party Agents Support Application Hosting Docker Linux Containers Extensibility Asynchronous Upgrade Modularity Granular Packaging Operational Efficiency Visibility and Control 10 BRKSPG-2069
- 11. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Evolved IOS-XR Enablement across Platforms NCS5508 NCS5001 NCS5002 NCS5502/SE NCS5011 ASR9000 64-bit NCS1002 with MACSec NCS6000 NCS5501/SE NCS5516 NCS5504 NCS-55A1-36H-S NCS-55A1-24H 11 NCS-55A2-MOD Now Shipping 6.5.1 NCS1002 BRKSPG-2069
- 12. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Pillars of Evolved IOS-XR Evolved Programmability Flexible Platform and Packaging Application Hosting • Data accessible via published model driven interfaces (Openconfig & Netconf) • Machine friendly • Enables automation @ scale • Packages can be inspected on box using standard tool chain (RPM tools) • Automated package installation with dependency checking • Open Bootloaders (iPXE) and end-to-end auto-provision • 64-bit Linux • Ability to run 3rd party off the shelf applications built with Linux tool chains • Run custom applications inside a separate LXC container Visibility & Telemetry • Operational Data, Deep analytical hooks • Model-based, flexible, Push Model 13 BRKSPG-2069
- 13.
- 14. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public • 64-bit OpenEmbedded Linux support. • Processes containerization. • Standard Linux toolchain. • Third-Party applications. • NCS5500, NCS5000 and NCS1002 support 64-bit Linux. • ASR 9000 supports 64-bit Linux starting with 6.1.1. • Will still have 32-bit QNX support. IOS-XR 6.X: A New Software Infrastructure X86 Hardware 64 bit Linux Control Admin NPU System Admin System Control Classic XR XR 6.X 32 bit QNX 15 BRKSPG-2069
- 15. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public • With eXR, the Admin plane and the Control Plane run in isolated environment. • ASR9K uses Virtual Machines (VMs) • NCS5000 and NCS5500 use containers (LXCs) • Provide the same functionalities. • Use same tools (libvirsh) to Provide the virtualization services • LXCs are lightweight no ISSU support. • VMs are heavier but provide ISSU support. Introduction to Virtualization X86 Hardware Hypervisor ASR9K App Lib OS … App Lib OS Operating System … App Lib App Lib X86 Hardware Operating System NCS5000-5500 16 BRKSPG-2069
- 16. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public IOS-XR Entities Roles: The Host • The main functions of the host are: • Interact directly with the underlying hardware. • Provide kernel services for the LXCs/VMs • Provide libraries, tools, and utilities to help launch, monitor, and maintain containers. • Provide the network infrastructure to allow containers to communicate. Routing Processor 64-bit Host OS Control Plane Admin Plane Third Party 19 • Runs Yocto based 64-bit Open Embedded Linux kernel. • Built using Windriver 7. BRKSPG-2069
- 17. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Container Architecture NCS 5500 and NCS 5000 20 Routing Processor 64-bit Host OS Control Plane Cisco developed packages for core network functions (BGP, MPLS, etc.) Yocto packages for standard Linux tools and libraries (bash, python, tcpdump, etc.). Admin Plane Runs processes responsible to perform system diags, monitor env. variables, and manage hardware components First container to be booted by the host, responsible for the start and maintenance of the Control Plane container Third Party Runs any 64-bit Linux distribution. Launched from the XR container using virsh and libvirtd. Access Network Interface through the Global VRF Network Name Space. BRKSPG-2069
- 18. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Cisco developed packages for core network functions (BGP, MPLS, etc.) Yocto packages for standard Linux tools and libraries (bash, python, tcpdump, etc.). Control Plane VM Container Architecture (ASR9K) Routing Processor 64-bit Host OS Hypervisor Runs any 64-bit Linux distribution. Launched from the XR virtual machine using virsh and libvirtd. Access Network Interface through the Global VRF Network Name Space. Third Party LXC Runs processes responsible to perform system diags, monitor env. variables, and manage hardware components First VM to be booted by the Hypervisor, responsible for the start and maintenance of the Control Plane VM Admin Plane VM 21 BRKSPG-2069
- 19.
- 20. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public 23 DHCP Server Route r Web Server IOS-XR images • Cisco Platforms: ISO format for iPXE • Supported Whitebox Platforms: ONIE compatible installer Automated Installation of IOS-XR images BRKSPG-2069
- 21. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public 24 DHCP Server IOS-XR Web Server ZTP Artifacts • CLI Configuration • ZTP script: Native Python scripts Native bash scripts, Golang/c++/pyinstaller binaries Automated Provisioning using ZTP Support for Data ports Starting with Release 6.5.1! BRKSPG-2069
- 22. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Sample DHCP Server Configuration option space cisco-vendor-id-vendor-class code width 1 length width 1; option vendor-class.cisco-vendor-id-vendor-class code 9 = {string}; class "ncs5508" { match if (substring(option dhcp-client-identifier,0,11) = "FGE194714QS");} pool { allow members of "ncs5508"; range 11.11.11.47 11.11.11.50; if exists user-class and option user-class = "iPXE" { filename="http://11.11.11.2:9090/ncs5500-mini-x.iso"; } if exists user-class and option user-class = "exr-config" { if (substring(option vendor-class.cisco-vendor-id-vendor-class,3,11)="FGE194714QS") { if (substring(option vendor-class.cisco-vendor-id-vendor-class,19,99)="NCS-5508") { filename="http://11.11.11.2:9090/scripts/ztp_script.py"; } }}} DHCP option 77 DHCP option 67 DHCP option 77 DHCP option 67 25 DHCP option 124 DHCP option 124 DHCP option 124 https://xrdocs.io/device- lifecycle/blogs/2017-09-21- ios-xr-ztp-learning-through- packet-captures/ BRKSPG-2069
- 23. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public 26 IP address Next-server Filename=http://<http-srv>/new-img.ISO DHCP SERVER IP address Next-server Filename=http://<http-srv>/script-SN.sh or Filename=http://<http-srv>/config-SN.txt HTTP(S) SERVER Image-new.ISO script-SN.sh config-SN.txt Additional Scripts Packages, etc… Apply configuration Execute script XR Boot ZTP execution iPXE boot XR Install N iPXE Y 1 2 3 GET script-SN.sh or config-SN.txt 4 GET addon scripts/packages/configuration 5 Retry Success Success config executable Retry IOS-XR Boot Process with iPXE and ZTP BRKSPG-2069
- 24. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public 27 ZTP Deploy Applications (Containers, Binaries, cron-jobs, etc.) Provide on-box automation libraries: Cli, Yang-APIs etc. Software Upgrade/Downgrade Apply Configuration ZTP Functions BRKSPG-2069
- 25. Model-Driven ZTP Automation Introducing on-boxYang API hooks
- 26. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public 29 IOS-XR CLI • Introducing Yang-APIs using on-box netconf client in Release 7.0.1 • On-box netconf client is transport free - No SSH port to connect to for ztp script/client. • Localhost based GNMI capability coming soon Yang over netconf Yang over GNMI ZTP Python APIs Yang based provisioning from Day 0! BRKSPG-2069
- 27. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public ZTP Script: Available and Upcoming Options 30 ZTP Scripts Python Library Bash Library Binaries Pyinstaller (ncclient, gNMI/gRPC) golang (gNMI/gRPC) C++ (gNMI/gRPC) IOS-XR CLI • Show commands • Exec commands (Actions) • Merge Config • Replace config IOS-XR CLI • Show commands • Exec commands (Actions) • Merge Config • Replace config YANG-XML • Ncclient • Native netconf client • gNMI/gRPC * Local gNMI/gRPC support coming soon. BRKSPG-2069
- 28. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Want to know more? 31 • IOS-XR Documentation, blogs, tutorial, etc .. • https://xrdocs.io/ • IPXE Deep Dive • https://xrdocs.io/device-lifecycle/tutorials/2016-07-27-ipxe-deep-dive/ • Working with ZTP • https://xrdocs.io/device-lifecycle/tutorials/2016-08-26-working-with-ztp/ • https://xrdocs.io/device-lifecycle/blogs/2017-09-21-ios-xr-ztp-learning- through-packet-captures/ • https://github.com/ios-xr/iosxr-ztp-python • Software Management blogs, tutorial, etc … • https://xrdocs.io/device-lifecycle/ BRKSPG-2069
- 29.
- 30. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public • Server-like Workflows • Modular Disaggregated • Update, Upgrade, Remove • Dependency management • Secure • Repository Support • Third Party Applications Networking Software Delivery Direction • RPM – RPM Package Manager • YUM – Yellowdog Updater Modified • New Install Commands 33 BRKSPG-2069
- 31. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public RPM: IOS-XR New Package Format • RPM Package Manager is the new Package format starting with IOS-XR 6.0. • Packages are placed in a reachable repository and accessed via FTP/SFTP/SCP/TFTP or HTTP or pre-staged on the box • Third Party packages are installed with RPM or YUM inside the Shell. • IOS-XR packages are installed with “install update/upgrade”. • Both YUM and install commands provide dependency verification/resolution. 34 BRKSPG-2069
- 32. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Anatomy of RPM Packages Archive MetaData Scriptlet RPM Describe package contents Install structure Dependencies Pre and Post install instructions CPIO binary archive /var/lib/rpm Database of installed packages 35 BRKSPG-2069
- 33. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public XR Packages Naming Convention <name>-<version>-<release>.<architecture>.rpm ncs5500-mgbl-4.0.0.0-r632.x86_64.rpm SMU <name>-<version>-<release>.<defect>.<architecture>.rpm ncs5500-mgbl-4.0.0.1-r632.CSCab12345.x86_64.rpm Package Major.Minor.Build.SMU 36 BRKSPG-2069
- 34. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Platform Release XR Software Package Repository XR SMUs Mini ISO + Pkgs Mini ISO + k9 pkg + Pkgs Svc Pak DDTS SMU DDTS SMUs ncs5500-mpls-te-rsvp-2.2.0.0-r632.x86_64.rpm ncs5500-isis-1.3.0.0-r632.x86_64.rpm ncs5500-mcast-2.1.0.0-r632.x86_64.rpm ncs5500-k9sec-4.1.0.0-r632.x86_64.rpm ncs5500-mgbl-4.0.0.0-r632.x86_64.rpm ncs5500-mpls-2.1.0.0-r632.x86_64.rpm ncs5500-ospf-2.0.0.0-r632.x86_64.rpm 6.3.2 <REPO_ROOT> ncs5500-mini-x-6.3.2.iso www.cisco.com Local Repository ncs-5500-mgbl-4.0.0.1-r632.CSCab12345.x86_64.rpm Full K9 ISO Full ISO TAR ncs5500-li-1.0.0.0-r632.x86_64.rpm 37 BRKSPG-2069
- 35. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Updating XR Packages Command Line Behavior install update source <repository> No package specified, update latest SMUs of all installed packages install update source <repository> ncs5500-mpls Package name specified, will install that package, update all latest SMUs of that package(s) (along with its dependencies). install update source <repository> ncs5500- mpls-2.0.0.0-r611.CSCab12345.x86_64.rpm SMU installation: the SMU will be downloaded and installed (along with its dependent SMUs). install update source <repository> ncs5500- mpls-2.1.0.0-r632.x86_64.rpm Asynchronous package upgrade, that package will be installed (along with its dependent SMUs). Available since 6.1.1 38 BRKSPG-2069
- 36. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Upgrading XR Packages Command Line Behavior install upgrade source <repository> version 6.5.1 Upgrade the base image to the specified version. All installed packages will be upgraded to same release as the base package. install upgrade source <repository> version 6.5.1 ncs5500-mpls-2.2.0.0-r651.x86_64.rpm Perform install upgrade and install update for a specific package(s) in one operation. 39 BRKSPG-2069
- 37. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public • No dependency management • Offline process required to copy packages • Require multiple operations • install add • install activate • install commit • Cisco Software Manager (CSM) for package content PIE Install • Dependency management • Online process over secure transport • Single operation • install update or install upgrade • On-box / Off-box package inspection using rpm tool • Description • Dependencies • Content RPM Install 40 BRKSPG-2069
- 38. Introducing Golden ISO (GISO)workflows
- 39. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public 42 Base ISO: • Minimal Software image • Use ZTP or day 1 operations to install/apply: Functionality packages/RPMs IOS-XR Configuration Third-party applications Golden ISO Minimal Software image + Functionality packages/RPMs + Base Configuration Third-party applications installed during ZTP or Day-1 Ops Golden ISO++ Minimal Software image + Functionality packages/RPMs + Base Configuration Third-party applications Creating Deployment-Ready Golden ISOs BRKSPG-2069
- 40. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public 43 GISO tool IOS- XR RPMs RPM Repo Base ISO DHCP Server Web Server Router Build ISO Deploy using iPXE or XR install Golden ISO Workflow BRKSPG-2069
- 41. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Installing and Updating Third Party Packages • Third Party Packages are traditional Linux tools available from the Shell • Communication: lighttpd ,openssh, wget, curl, etc. • Programming: python, ruby, perl, etc. • Utilities: sed, gawk, tar, gzip, vi, etc. • Additional packages provided by vendors (No Cisco Support) • Chef • Puppet • Installed using yum or rpm yum-config-manager --add-repo=http://192.168.0.254/XR/6.X.0 yum install chef –y 44 BRKSPG-2069
- 42. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Ansible, Puppet and Chef • Open Source Software with Commercial Support or Add-Ons. • Configuration management tools. • Idempotent • Describe infrastructure as code. • Can then be managed from within a VCS such as git. • Changes are attempted, shared, rolled forward and rolled back in a much more frictionless way than traditionally. • Agent based • Uses Ruby based DSL for configuration • Agentless • Uses Python 2.7 • Communicates over SSH • Agent based • Uses a subset of Ruby for configuration 45 BRKSPG-2069
- 43.
- 44. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Application Hosting • Visibility of all XR processes • Visibility of all XR resources • Run alongside XR Processes • No isolation • Must be built for WRL7 distribution • No direct visibility of XR processes • No direct visibility of XR resources • Run in a separate namespace • Isolation • Must be built for the third party LXC distribution Inside the Control Plane Inside the Third Party LXC/Docker Third Party LXC/ Docker Third Party Control Plane Binary VM/LXC 47 BRKSPG-2069
- 45. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public 48 • Create the Container archive on a Linux Server. • Copy the archive file to /misc/app_host. • Unarchive in a rootfs directory. • Create XML file specifying LXC parameters. • Run virsh command. Routing Processor 64-bit Host OS Control Plane Third Party virsh create <XML File> virsh list Deploy 2 Launch 3 TAR 1 Create Server Third Party Container Application Workflow BRKSPG-2069
- 46. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public 49 • Create a docker image • Pull down using docker client in XR control plane • Spin up the docker container on host OS by executing “docker run” in XR linux shell. Routing Processor 64-bit Host OS Control Plane docker pull <> docker run <> docker exec <> Pull 2 Launch 3 1 Create Server Docker Container Workflow BRKSPG-2069
- 47.
- 48. Modeled APIs atevery layer of the Stack
- 49. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public 52 HW/Data Plane NPU ASIC CPU Fans, Sensors, Optics, etc. System OS + BSP ASIC SDK Network Infrastructure / Service Adaptation RIB, Label Manager, BFD, Interface and more Applications / Protocol Stack BGP, ISIS, OSPF, LDP, SR, L2 Protocols Management CLI, Netconf, SNMP, Syslog, SSH SAL APL NBI 3rd Party Agent + Telemetry OSS Hardware Consists of ASIC/Chipset from HW vendors + CPU, Fans, Sensors System OS - Linux Kernel BSP(Board Support Package) - Boot Loader, Device Drivers, etc. ASIC SDK and drivers for the SDK Network Infrastructure Layer / Service Adaptation Layer • Acts as the bridge between the Application Layer and the HW • Presents abstractions to the Application/Protocol Layer Application/Protocol Layer Provides APIs into the Routing Protocols (BGP, IGP, SR, etc.) Management/Presentation Layer Provides access to configure and manage the stack through Network config/oper DB: Yang Models, CLI. SL API De-Layering The Network Stack BRKSPG-2069
- 50.
- 51. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public 54 Cisco IOS XR Device Programmability Data Plane Control Plane Management Plane App Controller Orchestrator Controller Orchestrator Data Plane Control Plane App Model-Driven Manageability Service Layer API BRKSPG-2069
- 52. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public 55 Controller Orchestrator Network Device Model-Driven Configuration Model-Driven Telemetry Closed-loop automation Encoding Protocol Models SDK Apps XML JSON GPB NETCONF gRPC Model-Driven SDKs YANG Development Kit (YDK) YANG Models (native, open) App App App SSH HTTP Transport TCP Model-Driven Manageability BRKSPG-2069
- 53. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Introduction to YANG • Modeling language (initially for NETCONF) • Main node types • Leaf – An end node of data • Leaf list – A list of single items • Container – Groups things together • List – A collection of containers 56 Leaf Node without a value Node with a value Leaf list Container (grouping) Container (presence) List key BRKSPG-2069
- 54. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Benefits of Model-Driven APIs • Model based, structured, computer friendly. • Multiple model types (native, OpenConfig, IETF, etc.). • Models decoupled from transport, protocol end encoding. • Choice of transport, protocol and encoding. • Model-driven APIs for abstraction and simplification. • Wide standard support while leveraging open source. Reduce Operational Costs 57 BRKSPG-2069
- 55. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public YANG Model Example container community-sets { description “Container for community sets"; list community-set { key community-set-name; description "Definitions for community sets"; leaf community-set-name { type string; description "name of the community set"; } leaf-list community-member { type string { pattern '([0-9]+:[0-9]+)'; } description "members of the community set"; } } } community-set CSET1 65172:1, 65172:2, 65172:3 end-set ! community-set CSET10 65172:10, 65172:20, 65172:30 end-set ! YANG CLI 58 BRKSPG-2069
- 56. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Model Data Example community-set CSET1 65172:1, 65172:2, 65172:3 end-set ! community-set CSET10 65172:10, 65172:20, 65172:30 end-set ! { "community-sets": { "community-set": [ { "community-set-name": "CSET1", "community-member": [ "65172:1", "65172:2", "65172:3" ] }, { "community-set-name": "CSET10", "community-member": [ "65172:10", "65172:20", "65172:30" ] } ] } } JSON CLI 59 BRKSPG-2069
- 57. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public YANG Models (Github) IOS XR Models XR models per release 60 BRKSPG-2069
- 58. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public 61 • SDK simplifying client development for model-driven programmability • Rich protocol support (NETCONF, RESTCONF, gNMI) • Rich data model support (XR, XE, NX-OS, OC, IETF) • Rich language support (Python, Go, C++) • Built-in model data validation • Open source YANG Development Kit ydk.io YDK-Py YDK-Cpp YDK-Go Model-driven classes NETCONF RESTCONF gNMI BRKSPG-2069
- 59. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Model-Driven APIs • Simplify app development • Abstract transport and encoding • Generated from YANG model • One-to-one correspondence between model and class hierarchy • Multi-language (Python, C++, Ruby, Go, etc.) 62 YANG Model Class Hierarchy (Python, C++, Ruby, Go) BRKSPG-2069
- 60. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public 63 • OpenConfig network management protocol • Supports configuration management and telemetry • Efficient data streaming over gRPC • IOS XR 6.5.1 introduced support for gNMI • YDK 0.8.0 enables simple client development gNMI at a Glance (Introduced in IOS-XR 6.5.1) Configuration Telemetry BRKSPG-2069
- 61.
- 62. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public 65 Service Adaptation RIB, Label Manager, BFD, Interface and more SAL 3rd Party Agent + Telemetry OSS Network Infrastructure Layer / Service Adaptation Layer • Acts as the bridge between the Application Layer and the HW • Presents abstractions to the Application/Protocol Layer • Highly Performant API outside the Central Config/Oper Database context SL API Locating the Service-Layer API BRKSPG-2069
- 63. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Service Layer API Architecture SL-API Functionality Verticals Initialization RPCs RIB RPCs MPLS RPCs Interface RPCs BFD RPCs gRPC Server (Router) Protobuf Schema/Model …… gRPC stub On-Box Client Request Response gRPC stub Off-Box Client Python, C++, go Python, C++, go 66 SYSDB Manageability Layer Network Infrastructure Layer (Service Layer) CLI, Yang Models, Streaming Telemetry Service Layer API Service-Layer APIs bypass SysDB giving higher performance BRKSPG-2069
- 64. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public SL-API Example Use Cases Traffic Engineering and Path Selection Programmable Route Downloads Bring your own Protocol/Agent Controller SL API Engineering paths for applications through Route/label manipulation, all based on user specific logic Programmable route downloads to CDN PoP routers to optimize TCAM space Controller SL API On-box agents and custom protocols that co-exist with standard protocols to influence routing 67 BRKSPG-2069
- 65. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public 68 Cisco Service Layer APIs • Github: Check out the Obj-model repository on Github at https://github.com/Cisco-Service-Layer/service-layer- objmodel Proto definitions Exhaustive Unit Tests and tutorial apps • @xrdocs: Blogs, Tutorials on Using Service Layer APIs and associated Libraries: https://xrdocs.io/cisco-service-layer/ • APIdocs: Doxygen based documentation, auto-generated from the proto files: https://xrdocs.io/cisco-service-layer/apidocs/ Github APIdocs @xrdocs BRKSPG-2069
- 66.
- 67. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Traditional Monitoring Concepts No Longer suited for Cloud-Scale Network Operations Sensing & Measurement Where Data Is Created Where Data Is Useful syslog SNMP CLI Storage & Analysis Strong burden on back-end Normalize different encodings, transports, data models, timestamps 70 BRKSPG-2069
- 68. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Streaming Telemetry Concepts Better suited for Cloud-Scale Network Operations Sensing & Measurement Storage & Analysis Analytics-Ready Data Streaming Telemetry Push paradigm One consistent way to access Statistics, Oper state & Events @ all layers High Performance: 10 sec Multiple encodings & Transport Where Data Is Created Where Data Is Useful 71 BRKSPG-2069
- 69. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public How Do You See Telemetry? 72 1 2 3 1 2 3 1 2 3 Models Encoding Transport BRKSPG-2069
- 70. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public “Pushing” More Data Really Does Work Better 7% 7% 8% 7% 14% 20% 0 10 20 30 1 2 3 CPU load 0 100 200 300 400 5s 10s 15s 20s Thousands Counters 0 5 10 15 20 25 MemAllocated Interface counters (In/Out pkts, In/Out Discards, In/Out Errors) Time to collect all data (NCS5516, 576х100GE) Telemetry SNMP Destinations Seconds 73 BRKSPG-2069
- 71. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Cisco IOS XR Telemetry Support 74 Classic XR ASR9k Evolved XR ASR9k NCS5500 NCS6k/CRS MDT support 6.1.1 6.1.1 6.1.1 6.1.3 Data models YANG (native, OC) YANG (native, OC) YANG (native, OC) YANG (native, OC) Transport (Control protocols) TCP, UDP (6.2.1) gRPC (dial-in, dial-out), TCP, UDP (6.2.1) gRPC (dial-in, dial-out), TCP, UDP (6.2.1) TCP, UDP (6.2.1) Encoding GPB / GPB-KV / JSON (6.3.1) GPB / GPB-KV / JSON (6.3.1) GPB / GPB-KV / JSON (6.3.1) GPB / GPB-KV / JSON (6.3.1) BRKSPG-2069
- 72. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public If bored with manual, automate MDT configuration with YDK (http://ydk.io)! Examples of Telemetry config with Native Models: https://goo.gl/Adjcgu, and with Openconfig Models: https://goo.gl/Ubb2ZN Model-Driven Telemetry Example telemetry model-driven destination-group DGroup1 address-family ipv4 10.30.110.38 port 5432 encoding self-describing-gpb protocol tcp ! ! address-family ipv6 2001::1 port 2345 encoding json protocol grpc no-tls ! sensor-group SGroup1 sensor-path Cisco-IOS-XR-infra-statsd-oper:infra- statistics/interfaces/interface/latest/generic-counters ! subscription Sub1 sensor-group-id SGroup1 sample-interval 1000 destination-id DGroup1 Where to Send and How What Data to Collect How Often GRPC with GPB encoding 76 GRPC with JSON encoding BRKSPG-2069
- 73. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Model-Driven Telemetry 100 interfaces UP / 0 interfaces DOWN 100 interfaces UP / 0 interfaces DOWN 100 interfaces UP / 0 interfaces DOWN 99 interfaces UP / 1 interfaces DOWN 99 interfaces UP / 1 interfaces DOWN 99 interfaces UP / 1 interfaces DOWN Event-Driven Telemetry Router X 100 interfaces UP / 0 interfaces DOWN interface X state DOWN Time Time Router X t0 t1 t1 t0 t1 t1 t0 t0 Event Driven Telemetry To make telemetry even better 77 BRKSPG-2069
- 74. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Event Driven Telemetry Easy to configure telemetry model-driven subscription interface sensor-group-id interface sample-interval 0 6.3.1 6.3.2 6.5.1* Interface RIB Syslog LLDP OpenConfig BGP, ISIS, MPLS, etc. 78 * The full list will be available after XR 6.5.1 is published on CCO BRKSPG-2069
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- 76. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public iPerf Based Path Selection in OSPF rtr1 iPerf Session • Each router is running a Linux distribution (Debian, Red Hat, etc…) inside the 3rd Party LXC • iPerf is running inside the container and a session is created between the two routers • Link degradation is detected by iPerf inside the container • Netconf client inside the container will update the OSPF cost of links based on iPerf result 3rd Party LXC Control Plane Admin Plane 3rd Party LXC Control Plane Admin Plane rtr2 OSPF 80 BRKSPG-2069
- 77. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public 82 Host Open/R Packet IO IOS-XR RIB Service Layer APIs IOS-XR Interfaces Hellos, 0MQ messages IPv6 neighbors Routes Telemetry Interface Notifications Open/R running inside Docker on XR https://github.com/akshshar/openr-xr XR LXC Open/R integration with IOS-XR (using Service-Layer APIs) Blog on xrdocs.io BRKSPG-2069
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- 79. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Key Takeaways • No Change in traditional CLI Operation with IOS-XR 6.X • 6.X is available on NCS5500, NCS5000 and NCS1000 Platforms • 6.1.1 is available on ASR9k (traditional 32-bit QNX offering will still be supported) • Operational enhancement for Automated Operations • Operating System change for Open Source tooling 84 BRKSPG-2069
- 80. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public IOS-XR 6.X Operational Enhancements Visibility & Telemetry Evolved programmability Application Hosting Flexible Platform & Packaging IOS-XR 6.X 85 BRKSPG-2069
- 81. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public References • IOS-XR Documentation, Blogs Tutorials and more : https://xrdocs.github.io/ • IOS-XR Programmability Learning Labs on DevNet: https://learninglabs.cisco.com/tracks/iosxr- programmability • IOS-XR YANG Models: https://git.io/vg7fk • YANG Developer Kit: http://ydk.cisco.com/py/docs/ • IOS-XR Ansible: https://github.com/ios-xr/iosxr-ansible • IOS-XR Puppet: https://docs.puppet.com/pe/latest/install_iosxr.html • IOS-XR Chef: https://downloads.chef.io/chef-client/iosxr/ • Cisco IOS XR 6.0 Software Management Lab v1: https://dcloud-cms.cisco.com/demo/cisco-ios-xr-software-management-lab-v1 • Cisco IOS XR 6.0 Application Hosting Lab v1: https://dcloud-cms.cisco.com/demo/cisco-ios-xr-6-0-application-hosting-lab-v1 • Cisco IOS XR 6.0 End-to-End Automation Lab v1: https://dcloud-cms.cisco.com/demo/cisco-ios-xr-6-0-end-to-end-automation-lab-v1 86 BRKSPG-2069
- 82. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Cisco Webex Teams Questions? Use Cisco Webex Teams (formerly Cisco Spark) to chat with the speaker after the session Find this session in the Cisco Events Mobile App Click “Join the Discussion” Install Webex Teams or go directly to the team space Enter messages/questions in the team space How 1 2 3 4 87 cs.co/ciscolivebot#BRKSPG-2069 BRKSPG-2069
- 83. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Don’t forget: Cisco Live sessions will be available for viewing on demand after the event at ciscolive.cisco.com • Please complete your Online Session Survey after each session • Complete 4 Session Surveys & the Overall Conference Survey (available from Thursday) to receive your Cisco Live T- shirt • All surveys can be completed via the Cisco Events Mobile App or the Communication Stations Complete your online session survey 88 BRKSPG-2069
- 84. © 2019 Ciscoand/or its affiliates. All rights reserved. Cisco Public Demos in the Cisco Showcase Walk-in self-paced labs Meet the engineer 1:1 meetings Related sessions Continue Your Education 89 BRKSPG-2069
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