IOS XR Introduction

Channel: INEtraining   |   2012/06/28
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IOS XR Introduction
IOS XR Introduction
::2012/06/28::
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Introduction to IOS XR CLI and Configuration
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Cisco Live 2014: ASR 9000 IOS XR Hardware Architecture QOS EVC IOS XR Configuration and Tshooting
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Cisco Videos ~ IOS XR Routing   BGP
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Cisco IOS XR Software Manager
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IOS XR 2 Stage Commit
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IS-IS Route Leaking on IOS XR / IOS XR Routing Policy Language (RPL)
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Cisco ISO XR in GNS3
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Cisco IOS Software Bundled Publication for September 2013
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Cisco CRS(Carrier Routing System) Hardware Architecture 1
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Charles McClam, U.S. Dept. of Agriculture -- Interview at Telework Exchange Town Hall
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Cisco Live 2014: Routing Operations and Features in Cisco IOS Routers
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XR Training
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MicroNugget: Standalone C-Series
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xR Intro
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From Wikipedia, the free encyclopedia
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Line card running IOS XR.

IOS XR is a train of Cisco Systems' widely deployed Internetworking Operating System (IOS), used on their high-end carrier-grade routers such as the CRS-1, 12000, and ASR9000 series.

Architecture[edit]

According to Cisco's product literature, IOS XR shares very little infrastructure with the other IOS trains, and is instead built upon a "preemptive, memory protected, multitasking, microkernel-based operating system".[1] The microkernel is provided by QNX.[2]

IOS XR aims to provide the following advantages over the earlier IOS trains:

  • Improved high availability (largely through support for hardware redundancy and fault containment methods such as protected memory spaces for individual processes and process restartability)
  • Better scalability for large hardware configurations (through a distributed software infrastructure and a two-stage forwarding architecture)
  • A package based software distribution model (allowing optional features such as multicast routing and MPLS to be installed and removed while the router is in service)
  • The ability to install package upgrades and patches (potentially while the router remains in service)
  • A web-based GUI for system management (making use of a generic, XML management interface)

History[edit]

IOS XR was announced along with the CRS-1 in May 2004.[3] The first generally available version was 2.0; the first version generally available for the 12000 router series was 3.2. Version 3.9 was the first generally available version for the ASR9000 series. The most recent release is 5.1.0 which was released on September 10th, 2013. [4]

References[edit]

  1. ^ Cisco IOS XR product literature
  2. ^ QNX press release confirming use of their microkernel in IOS XR
  3. ^ Cisco press release announcing CRS-1 and IOS XR
  4. ^ Cisco's release notes for the various IOS XR versions

External links[edit]

Wikipedia content is licensed under the GFDL License

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