Re: [core] [Dots] Large asynchronous notifications under DDoS: New BLOCK Option?

mohamed.boucadair@orange.com Thu, 09 April 2020 08:08 UTC

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From: <mohamed.boucadair@orange.com>
To: Carsten Bormann <cabo@tzi.org>
CC: Jon Shallow <supjps-ietf@jpshallow.com>, "dots@ietf.org" <dots@ietf.org>, "core@ietf.org" <core@ietf.org>
Thread-Topic: [core] [Dots] Large asynchronous notifications under DDoS: New BLOCK Option?
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Date: Thu, 9 Apr 2020 08:08:12 +0000
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Subject: Re: [core] [Dots] Large asynchronous notifications under DDoS: New BLOCK Option?
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Carsten, 

I forgot to mention for this additional "guard": it applies for the "full" notification (not it fragments).

Cheers,
Med

> 
> The probing-rate used in idle time may not be the same as the one
> using during at attack time. We do a value for each of them.
> 
> (3) in addition, we negotiate this additional "guard":
> 
>    DOTS agents MUST NOT send pre-or-ongoing-mitigation telemetry
>    messages to the same peer more frequently than once every
> 'telemetry-
>    notify-interval'