Release Notes

13
Release Notes for Cisco Intrusion Prevention System 5.1(7)E1
OL-8492-01
Before Upgrading to Cisco IPS 5.1(7)E1
Figure 3 illustrates what each part of the IPS software file represents for signature engine updates.
Figure 3 IPS Software File Name for Signature Engine Updates
Signature Engine Updates
Executable files containing binary code to support new signature updates. Signature engine files require
a specific service pack, which is also identified by the req designator.
Recovery, Manufacturing, and System Images
Figure 4 illustrates what each part of the IPS software file represents for recovery and system image
filenames.
Figure 4 IPS Software File Name for Recovery and System Image Filenames
Recovery and system images contain separate versions for the installer and the underlying application.
The installer version contains a major and minor version field.
Installer Major Version
The major version is incremented by one of any major changes to the image installer, for example,
switching from .tar to rpm or changing kernels.
Installer Minor Version
The minor version can be incremented by any one of the following:
• Minor change to the installer, for example, a user prompt added.
• Repackages require the installer minor version to be incremented by one if the image file must be
repackaged to address a defect or problem with the installer.