[ovs-dev] [PATCH] DESIGN: Describe principles of in-band control.

Justin Pettit jpettit at nicira.com
Sun Apr 22 17:10:35 UTC 2012


This is great, Ben.  Just a few minor things:

> +Out-of-band control has the following benefits:
> +
> +    - Simplicity: Out-of-band control slightly simplifies the switch
> +      implementation.
> +
> +    - Reliability: Excessive switch traffic volume cannot interfere
> +      with control traffic.

Do you think it's worth mentioning that we now set the DSCP bits so that people can prevent some of this in their "core" switches and routers?

> +The following points describe important special cases of this
> +principle.
> +
> +   In-band control must be implemented regardless of whether the
> +   switch is connected.

Do you think it's worth making these bullet points to match the previous lists?

> +Open vSwitch implements in-band control as "hidden" flows, that is,
> +flows that are not visible through OpenFlow, and at a higher priority
> +than wildcarded flows can be set up by through OpenFlow.  This is done

You can drop either the "by" or "through".

Thanks,

--Justin





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