Re: [Dots] ietf104-hacthon-issue

"MeiLing Chen" <chenmeiling@chinamobile.com> Tue, 21 May 2019 02:39 UTC

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Date: Tue, 21 May 2019 10:39:12 +0800
From: "MeiLing Chen" <chenmeiling@chinamobile.com>
To: kaname <kaname@nttv6.jp>, william.panwei <william.panwei@huawei.com>
Cc: dots <dots@ietf.org>
References: <201905170959127925896@chinamobile.com>, <a191d165-3d9d-1bdc-741f-f718f5d4277b@nttv6.jp>
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Subject: Re: [Dots] ietf104-hacthon-issue
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Hi kaname,panwei
[Meiling] Mitigation request with sampleMitigationRequestDraft.json use "trigger-mitigation"=true,  panwei think the mitigation request with trigger-mitigation set to false is a pre-configured mitigation request, it is sent before a DDoS attack happens. When DOTS server receives such mitigation request, it just saves this request and won’t trigger mitigation immediately.
Whether the process is correct or not?

> question1:what's the function of Deadman's Trigger?

So-called Deadman's Trigger is the function described in '3.3.3.  Automated Mitigation on Loss of Signal' of draft-ietf-dots-architecture and implemented as 'trigger-mitigation' in the signal channel.

   trigger-mitigation:   If the parameter value is set to 'false', DDoS
      mitigation will not be triggered for the mitigation request unless
      the DOTS signal channel session is lost.


> question2:Gateway Function、Redirection、Happy Eyeballs,Whether these three functions are not available in the go-dots?
Currently they are not supported by go-dots.

regards,
Kaname

On 2019/05/17 10:59, MeiLing Chen wrote:
Hi kaname,
    I have two questions about this slide of PPT.
question1:what's the function of Deadman's Trigger?
question2:Gateway Function、Redirection、Happy Eyeballs,Whether these three functions are not available in the go-dots?

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