[quagga-dev 14805] Re: XR-Like Commit Feature

Donald Sharp sharpd at cumulusnetworks.com
Wed Mar 2 16:01:28 GMT 2016

We've implemented a couple code changes that allow you to modify the
/etc/quagga/*.conf files individually and then to load them via a reload
script, which diff's the running and the *.conf  and only applies the
actual changes needed.

You could also do a poor man's vtysh -f <new conf file> if you wanted to as


On Wed, Mar 2, 2016 at 10:47 AM, Paul Jakma <paul at jakma.org> wrote:

> On Wed, 2 Mar 2016, Alexander Turner wrote:
> What's the consensus amongst the community? Has anyone tried this or
>> spoken about this previously?
> Someone mentioned Vyatta had done some work in this area. I think Cumulus
> might have done some work on other interfaces into things too, but I'm not
> sure.
> Interested to hear thoughts and get a discussion going...
> The one I know about is OpenSwitch (OpenSwitch.net). They've modified the
> daemons to publish their configuration state (and routing state) into the
> OpenvSwitch "OVSDB" embedded DB via the OVSDB / RFC7047 protocol, and pick
> up on changes in that DB.
> See:
> http://openswitch.net/documents/user/architecture#top-level-view-of-the-system
> That DB has a schema, and the protocol supports transactions, so with that
> you can at least have an entire configuration verified against the schema
> and published to the daemons atomically, as a transaction. However, the
> schema might not fully capture all the requirements.
> I would like to get support for atomically applied configurations, and
> more structured storage of config (and maybe other) state. So we can
> support architectures like the above. It would solve problems for users and
> it would make certain technical problems easier to fix.
> We probably have to find a way to get there in smaller, more manageable
> chunks.
> regards,
> --
> Paul Jakma      paul at jakma.org  @pjakma Key ID: 64A2FF6A
> Fortune:
> Never do today what you can put off until tomorrow.
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