August 2009
Intermediate to advanced
690 pages
20h 14m
English
Content preview from JUNOS High Availability
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
JUNOS Package Overview
Before looking at how or when to upgrade, we need to talk a bit about the naming conventions used to identify a JUNOS software package.
Software Package Naming Conventions
Most commercially available JUNOS software packages follow a naming convention based on the following model:
Package_name-M.NZNumber-Audience-Validation.tgz |
In this model:
- Package_name
Identifies the type of package and platform family to which the JUNOS software applies. The software has two major categories of packages:
jbundleandjinstall.jbundlecomprises just the JUNOS components, whilejinstallcontains the JUNOS components as well as a revised FreeBSD. Thejinstallandjbundlepackages are provided in platform-specific variations, as shown in Table 6-1.- M.N
Represents the software major release number.
- Z
Indicates the type of software release. In most cases, it is an R, to indicate that this is released software. While not appropriate for a high availability network, alpha and beta software is made available to some customers for testing purposes. Such software is tagged with an A (for alpha-level software), B (for beta-level software), or I (for internal, test, or experimental versions of software) in the Z position.
- Number
Describes the incremental release of the major revision or the internal build number for non-R releases.
- Audience
Identifies the software package as being suitable for a worldwide audience (marked as export) or as being suitable for a domestic audience. This distinction is ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.