October 2012
Intermediate to advanced
902 pages
28h 9m
English
Content preview from Juniper MX SeriesBecome 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,
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Junos
Junos is a purpose-built networking operating system based on one of the most stable and secure operating systems in the world: FreeBSD. Junos is designed as a monolithic kernel architecture that places all of the operating system services in the kernel space. Major components of Junos are written as daemons that provide complete process and memory separation.
One of the benefits of monolithic kernel architecture is that kernel functions are executed in supervisor mode on the CPU while the applications and daemons are executed in user space. A single failing daemon will not crash the operating system or impact other unrelated daemons. For example, if there was an issue with the SNMP daemon and it crashed, it wouldn’t impact the routing daemon that handles OSPF and BGP.
One Junos
Creating a single network operating system that’s able to be leveraged across routers, switches, and firewalls simplifies network operations, administration, and maintenance. Network operators need only learn Junos once and become instantly effective across other Juniper products. An added benefit of a single Junos is that there’s no need to reinvent the wheel and have 10 different implementations of BGP or OSPF. Being able to write these core protocols once and then reuse them across all products provides a high level of stability, as the code is very mature and field tested.
Software Releases
Every quarter for nearly 15 years there has been a consistent and predictable release of Junos. The development ...
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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.
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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.