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* T1457: restructure configuration overview for the beginner user * T1457: install: restructure note about deprecated install system * T1457: migrate vyos history from the wiki * T1457: Migrate from vyatta: Migrated from the wiki * T1457: VPN: Migrate gre-ipsec from the wiki
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.. _history:
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VyOS History
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==================
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VyOS is a Linux-based network operating system that provides software-based network routing, firewall, and VPN functionality.
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The VyOS project was started in late 2013 as a community fork of the `GPL <http://en.wikipedia.org/wiki/GNU_General_Public_License>`_ portions of Vyatta Core 6.6R1 with the goal of maintaining a free and open source network operating system in response to the decision to discontinue the community edition of Vyatta. Here everyone loves learning, older managers and new users.
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VyOS is primarily based on `Debian GNU/Linux <http://www.debian.org/>`_ and the `Quagga <http://www.nongnu.org/quagga/>`_ routing engine. Its configuration syntax and :ref:`cli` are loosely derived from Juniper JUNOS as modelled by the `XORP project <http://www.xorp.org/>`_ (which was the original routing engine Vyatta was based upon).
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Vyatta changed to the Quagga routing engine for release 4.0.
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Vyos changed the routing enging to `FRRoution <https://frrouting.org/>`_ in version 1.2.0
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**How it's different from other router distros?**
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- Unified command line interface in the style of hardware routers.
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- Scriptable CLI
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- Stateful configuration system: prepare changes and commit at once or discard, view previous revisions or rollback to them, archive revisions to remote server, execute hooks at commit time...
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- Image-based upgrade: keep multiple versions on the same system and revert to previous image if something went wrong.
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- Not just firewall and VPN: includes routing protocols such as BGP and OSPF and complex routing policy language.
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- Runs on physical and virtual platforms alike: small x86 boards, big servers, KVM, Xen, VMWare, Hyper-V...
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- Completely free and open source, with documented internal APIs and build procedures.
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- Community driven: patches are welcome, all code, bugs, and nightly builds are public.
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