Re: [sidr] Injecting idea of "freshness of repository data" into BGP

On 3/29/12 10:24 , Christopher Morrow wrote:
> On Thu, Mar 29, 2012 at 4:16 AM, Jeffrey Haas <jhaas@pfrc.org> wrote:
>> Jakob,
>>
>> On Thu, Mar 29, 2012 at 03:51:10AM -0400, Jakob Heitz wrote:
>>> Could we not put a freshness indication into the BGP update?
>>> Then everyone that receives the new update would know to invalidate the less fresh paths.
>>
>> Just to be clear, this is not a route freshness mechanism I am
>> recommending.  What I am recommending is a signal that a repository has
>> newer data that may be needed for validation.
> 
> the comment at the mic from Mr Hoffman was interesting to me,
> potentially signalling via something akin to RSS/Atom, something light
> weight and simple.

update frequency is in either case the product of the polling interval.
if you want to not be dependant on a polling interval one could choose a
signaled rather than polled approach.

> -chris
> 
>> Given such a mechanism, we may be able to reduce the work upon the
>> repository mirroring system (distributed or not) by not having to regularly
>> poll for new objects frequently unless the repository indicates there is new
>> data present.
>>
>> -- Jeff
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