Re: [secdir] [spam] secdir review of draft-ietf-ancp-mc-extensions-14
Tom Taylor <tom.taylor.stds@gmail.com> Sat, 01 February 2014 02:20 UTC
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Date: Fri, 31 Jan 2014 21:20:18 -0500
From: Tom Taylor <tom.taylor.stds@gmail.com>
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To: "Zhangdacheng (Dacheng)" <zhangdacheng@huawei.com>, "iesg@ietf.org" <iesg@ietf.org>, "secdir@ietf.org" <secdir@ietf.org>, "draft-ietf-ancp-mc-extensions.all@tools.ietf.org" <draft-ietf-ancp-mc-extensions.all@tools.ietf.org>
References: <C72CBD9FE3CA604887B1B3F1D145D05E3B4292C2@nkgeml507-mbs.china.huawei.com> <52E1B176.9070209@gmail.com> <C72CBD9FE3CA604887B1B3F1D145D05E3B429E8F@nkgeml507-mbs.china.huawei.com>
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Subject: Re: [secdir] [spam] secdir review of draft-ietf-ancp-mc-extensions-14
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On 26/01/2014 12:53 AM, Zhangdacheng (Dacheng) wrote: >>> >>> 4) >>> >>> Section 6.1.3 lists the protocol elements that MUST be >>> implemented to support the conditional access with white and >>> black lists multicast capability. I found White-List-CAC TLV is >>> included in the list. However, the White-List-CAC TLV is used to >>> indicate that the NAS wishes the AN to do admission control for >>> white-listed flows, and this use case is discussed in Section >>> 3.4.2.3 of RFC 5851 "Multicast Admission Control and White >>> Lists". So, I doubt whether this TLV needs to be supported is >>> this case. >>> >> [PTT] Doesn't Section 3.4.2.3 describe a case where the AN does >> both admission control and white listing, and sets the conditions >> for doing that? >> >> "IPTV is an example of a service that will not be offered as best >> effort, but requires some level of guaranteed quality of service. >> This requires the use of Multicast Admission Control. Hence, if >> the Access Node wants to autonomously perform the admission >> process, it must be aware of the bandwidth characteristics of >> multicast flows. Otherwise, the Access Node would have to query the >> NAS for Multicast Admission Control (per the grey list behavior); >> this would defeat the purpose of using a white and black list." >> > > [Dacheng Zhang:] Maybe I didn't explain my point view clearly last > time. Sorry for that. > > If the title of section 6.13 is "Protocol Requirements For Admission > Control With White and Black Lists ", then everything is perfect > because this TLV is used to indicate that the NAS wishes the AN to do > admission control for white-listed flows. The use case you provided > above is also one for admission control. But at the moment, the tile > of this section is " Protocol Requirements For Conditional Access > With White and Black Lists ". That is why I raised a question here > for your consideration. ^_^ > > Cheers > > Dacheng > > [PTT] This is the last outstanding item from your review. The simple resolution is as you suggest: change the names of the capabilities. I'll do that. Tom
- [secdir] secdir review of draft-ietf-ancp-mc-exte… Zhangdacheng (Dacheng)
- Re: [secdir] [spam] secdir review of draft-ietf-a… Tom Taylor
- Re: [secdir] secdir review of draft-ietf-ancp-mc-… Roberta Maglione (robmgl)
- Re: [secdir] secdir review of draft-ietf-ancp-mc-… Ben Laurie
- Re: [secdir] secdir review of draft-ietf-ancp-mc-… Tom Taylor
- Re: [secdir] [spam] secdir review of draft-ietf-a… Zhangdacheng (Dacheng)
- Re: [secdir] [spam] secdir review of draft-ietf-a… Tom Taylor
- Re: [secdir] [spam] secdir review of draft-ietf-a… Tom Taylor