This MIB provides information about images running
on the system. It has been extended to be useful
for modular operating systems.
The image table provides information about currently
running image on the system. A modular operating
system image consists of base image and all the
installables loaded on the base image. A base image
can be obtained from ceImageTable and all the
installables installed on this image can be obtained
Essential part of the operating system,
which forms base functionality on top of
which patches can be added.
MBI (Minimum bootable image)
A small image which contains the smallest
possible amount of functionality required to
bootstrap and load a full image. This image
typically contains the kernel, the file system
drivers, and some hardware initialization code.
It is executed at boot-up, and initializes just
enough to access the rest of the code, and
Modular operating system
An operating system that exhibits runtime
modularity characteristics, such as multiple
address spaces, fault isolation between
processes, and modularity delivery and
replacement of image components.
Patch/Package/SMU (software maintenance upgrade)
A modular replacement for some piece of on-box
content, such as a binary shared object, or a text
file. This entity is meant to replace or augment
something that is already part of the base image.
Group of packages delivered as a bundle. It is
meant to be loaded on MBI.
A non-binary piece of on-box content, typically a
TCL script for use by the TCL interpreter, or
some other form of interpreted router content.
An installable can be a patch, package, composite
package, SMU or script. It is a piece of
software which can be loaded on to the base
image on a system.
This term is used in this MIB to represent path
where operating system image is located. It is
the way of describing where on the file system
the installed software is located. Modular
operating system image consists of base image
and installables loaded on this base image.
Tag is a virtual label placed by user that
indicates a point deemed to be stable. It can be
used to rollback to a system after an install
that negatively impacted the functionality of the
system. It gives points in system where user can
go back to, to remove installables installed
after that point of time.