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

Peter Psenak <ppsenak@cisco.com> Wed, 29 May 2019 09:16 UTC

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To: Robert Raszuk <rraszuk@gmail.com>
Cc: Aijun Wang <wangaijun@tsinghua.org.cn>, Tony Li <tony1athome@gmail.com>, lsr@ietf.org
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From: Peter Psenak <ppsenak@cisco.com>
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Date: Wed, 29 May 2019 11:16:49 +0200
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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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Hi Robert,

On 29/05/2019 10:31, Robert Raszuk wrote:
> 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

yes, Area Node IDs TLV is not present.


> 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 ?

algo 0 + no topology advertised equals to legacy flooding.

thanks,
Peter

> 
> Thx,
> R.