Cisco 4215 - Intrusion Detection Sys Sensor Configuration Manual page 343

Chapter 18 Obtaining Software
Figure 18-1 IPS Software File Name
Update Type
Major Version Level
Minor Version Level
Service Pack Level
IDS-K9-sp-5.0-2-.pkg–Service Pack Update
IDS-K9-min-5.1-1-.pkg–Minor Version Update
IDS-K9-maj-5.0-1-.pkg–Major Version Update
Update Type
Signature Level
Minimum Software Requirement
A major version upgrade contains new functionality or an architectural change in the product. For
example, the IPS 5.0 base version release includes everything since the previous major release (the minor
version features, service pack fixes, and signature updates) plus any new changes. Major upgrade 5.0(1)
requires 4.1.
The 5.0(1) major upgrade is only used to upgrade 4.1 sensors to 5.0(1). If you are reinstalling 5.0(1) on
Note
a sensor that already has 5.0(1) installed, use the system image or recovery procedures rather than the
major upgrade.
A minor version upgrade is incremental to the major version. Minor version upgrades are also base
versions for service packs. The first minor version upgrade for 5.0 is 5.1(1). Minor version upgrades are
released for minor enhancements to the product. Minor version upgrades contain all previous minor
features, service pack fixes, and signature updates since the last major version, and the new minor
features being released. The minor upgrade requires the major version.
Service packs are cumulative following a base version release (minor or major). Service packs are used
for the release of defect fixes with no new enhancements. Service packs contain all service pack fixes
since the last base version (minor or major) and the new defect fixes being released. Service packs
require the minor version.
Signature updates are cumulative and increment by one with each new release (for example, S145, S146,
S147). Signature updates include every signature since the initial signature release (S1) in addition to
the new signatures being released. Signature updates require the minimum version listed in the filename.
To install the most recent signature update, you must have the most recent minor version. Service packs
are dependent on the most recent minor version, which is dependent on the most recent major version.
78-16527-01
IPS-maj-w.x-y-.pkg
IPS-sig-Sx-minreq-5.0-1.pkg
Cisco Intrusion Prevention System Sensor CLI Configuration Guide for IPS 5.0
Obtaining Cisco IPS Software
18-3