Cisco IOS Tree

Below link has good information about the IOS image numbering, available packages and naming process.

http://www.cisco.com/web/about/security/intelligence/ios-ref.html

Points taken from above link:

  • Cisco IOS:
    • 12.4   — Main train. Only fixes software issues.
    • 12.4T — Technology train. Receives new software and hardware feature with bug fixes.
    • 15.0(1) M — Extended maintenance release.
    • 15.0(1) T — Standard maintenance release.
    • 12.4(4) XD — Short-lived releases.
  • The releases that start with an uppercase X after the closing parenthesis are called X-releases and are considered a short-lived release. New supports features will be released as short-lived and later integrate into main train.
  • 12.2S  — Service provider market
  • 12.2SB — Broadband, mid-range routers for service provider edge networks. Cisco 10000 Series
  • 12.2SE —- Enterprise and service provider edge networks. Cat 3550, cat 3750 switches.
  • 12.2SR  — High-end Metro Ethernet and MPLS PE
  • 12.2SX — High-end Ethernet LAN switching datacenter.
  • IOS XE: (2.4, 2.5, 2.6):
    • For compact routers at the network edge. In-service software upgrades,ability to restart processes individually.ASR 1000 Series routers
    • Originated from the Cisco IOS 12.2S.
  • Cisco NX-OS: (4.2 , 4.1, 4.0):
    • Data-center-class operating system built to meet the demands of the virtualized data center.
    • Self-healing and highly modular design of Cisco NX-OS Software makes zero-impact operations a reality.

Cisco IOS Software Packaging:

  • For routers: (8 packages):
    • IP Base – entry level IOS image
    • IP voice – contains IP Base + VOIp and other voice software packages.
    • Advanced security – IP Base + VPN, firewall etc.
    • SP services –  IP Base + ATM, MPLS, SSH/SSL etc
    • Enterprise base – IP Base + All L3 protocols.
    • Enterprise services – Enterprise base + SP services
    • Advanced IP services – Advanced security + SP services
    • Advanced Enterprise services – Enterprise services + Advanced IP services.Includes all features.
  • For switches: ( 7 packages):
    • Layer-2 Base: L2 protocols, STP.
    • Lan Base:  L2 Base + ACL + QoS
    • IP Base:  Lan base + VRRP + Base protocols.
    • IP services: IP base + full IP routing
    • Advanced IP services:  IP services + IPv6, MPLS, VPN
    • Enterprise services: IP services + IPv6 + IPx + IBM services
    • Advanced Enterprise services – Includes all features.
  • Image Name: c3560-ipservicesk9-mz.122-55
    • c3560 – Hardware model.
    • ipservicesk9 – IP services feature set.
    • mz – memory and compression format.
    • 122 – 12.2 Train
    • 55 – Maintenance release.
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One Response to Cisco IOS Tree

  1. Robert Juric says:

    First I just wanted to say great post. Great layout and overview of the various IOS images.

    You might also want to add the new LAN Lite Catalyst Switches:
    http://www.cisco.com/en/US/customer/prod/collateral/switches/ps5718/ps6406/product_data_sheet0900aecd806b0bd8.html

    Like

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