Specifications

Chapter 9 IOS® Software and Network Management
9-6
Cisco IOS® Software
New Naming Convention Categories
Cisco IOS Packaging Platform Support
Platforms that migrate to the new packaging framework with target packages
Cisco IOS Trains
A Cisco IOS train is a vehicle for delivering releases that evolve from a common code base.
In recent years, with the addition of thousands of new features, hundreds of new
applications, and a wide array of platforms, Cisco IOS Software diversified from one train
of releases to multiple trains supporting different feature sets for different customer needs.
Types of Trains
Cisco IOS releases are delivered on the following types of trains
Bug Synchronizing and Feature Integration
Bug fixes to maintenance releases on a mainline train are synchronized with subsequent
maintenance releases on the child T train. New features are integrated into the T train
only-the mainline train receives bug fixes only.
Train Lifecycle Milestones
At some point in the life of a train, Cisco stops selling, maintaining, and supporting it. Cisco
informs customers that a train has reached one of these milestones by issuing product
bulletins and other communications. First Customer Shipment (FCS), End of Sale (EoS),
End of Engineering (EoE), and End of Life (EoL) are associated with lifecycle milestones.
Category Naming Convention
Base
Entry level image, (i.e., IP Base )
Services
Addition of IP Telephony Service, MPLS, Net Flow, Voice over IP (VoIP), Voice over Frame Relay (VoFR), and ATM
(i.e., SP Services, Enterprise Services)
Advanced
Addition of VPN, Cisco IOS Firewall, 3DES encryption, SSH, Cisco IOS IPSEC and Intrusion Detection Systems (IDS)
(i.e., Advanced Security, Advanced IP Services)
Enterprise
Additional of multi-protocols, including IBM, IPX, AppleTalk (i.e., Enterprise Base, Enterprise Services)
IP Base IP Voice Advanced
Security
Advanced
IP Services
SP Services Enterprise
Base
Enterprise
Services
Advanced
Enterprise
Services
Cisco 3745
X X X X X X X X
Cisco 3725
X X X X X X X X
Cisco 2691
X X X X X X X X
Cisco 2600 XM Series
X X X X X X X X
Cisco 1751-V, 1760
X X X X X X X X
Cisco 1721, 1751
X X X
Train Description Examples
mainline
Consolidates releases and fixes defects. Inherits
features from the parent T train, and does not add
additional features.
12.2, 12.3
T
Introduces new features and fixes defects. 12.3T
S
Consolidates 12.1E, 12.2 mainline, and 12.0S, which
supports high-end backbone routing, and fixes defects.
12.0S, 12.2S
E
Targets enterprise core and SP edge, supports advanced
QoS, voice, security, and firewall, and fixes defects.
12.1E
B
Supports broadband features and fixes defects. 12.2B, 12.3B