Re: [Lsr] 答复: 答复: Option B from "Migration between normal flooding and flooding reduction"

Robert Raszuk <rraszuk@gmail.com> Wed, 29 May 2019 08:31 UTC

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In-Reply-To: <338c3a6e-3d85-1592-32a2-0dc47388f46e@cisco.com>
From: Robert Raszuk <rraszuk@gmail.com>
Date: Wed, 29 May 2019 10:31:08 +0200
Message-ID: <CA+b+ERmK3Hr-KoPtM4qqMAGjNgWuGeSxR-O8XCCUU1fyDW_GDA@mail.gmail.com>
To: Peter Psenak <ppsenak@cisco.com>
Cc: Aijun Wang <wangaijun@tsinghua.org.cn>, Tony Li <tony1athome@gmail.com>, lsr@ietf.org
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Subject: Re: [Lsr] =?utf-8?b?562U5aSNOiDnrZTlpI06IE9wdGlvbiBCIGZyb20gIk1pZ3Jh?= =?utf-8?q?tion_between_normal_flooding_and_flooding_reduction=22?=
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Hey Peter,


> > Is it more efficient that only one area leader indicates(according to
> the command from NMS) explicitly then the network will be back to normal
> flooding?
>
> yes and we have that in the draft:
>
> "When the Area Leader advertises algorithm 0 in its Area Leader Sub-
>     TLV and does not advertise a flooding topology, Dynamic Flooding is
>     disabled for the area.  Note this applies whether the Area Leader
>     intends to operate in centralized mode or in distributed mode."
>

Two little questions ...

- I think to avoid potential ambiguity in implementations it would be worth
clarifying what "does not advertise" means ... does it mean that Area Node
IDs TLV is not present all together or does it mean that it MAY be present
but it is sufficient that it does not contain any Node ID .. or both ?

- how does this apply to distributed mode if flooding topology is to be
used only in centralized mode ? Isn't the quoted text from section 6.4 a
bit incorrect and requires a fix ?

Thx,
R.