Re: [Sidrops] rpki rp frequency

Randy Bush <> Mon, 13 April 2020 17:31 UTC

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Date: Mon, 13 Apr 2020 10:30:55 -0700
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From: Randy Bush <>
To: Jared Mauch <>
Cc: SIDR Operations WG <>, Di Ma <>
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Subject: Re: [Sidrops] rpki rp frequency
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>>>>> As often as necessary that the RP can synchronize with a repository.
>>>> how often is 'necessary?'  in units of time, please.
>>> I think It is the ISP who defines what is necessary.
>> what is reasonable for the good of routing in the internet?  i suggest
>> an hour.
>> before notify, we tolerated dns propagation of a day, and it was very
>> painful.  that seems primitive and silly now.
> Most of the IRRs are mirroring at an interval of 5 minutes or so these
> days, or that was one of the last things I asked to be changed at 2914
> before I left to ensure regular sync.
> I think 300s is reasonable, but 3600 (60 min) is likely the high limit.

there are the questions of how frequently a CA publishes, how often an
RP pulls, and how often routers pull from their RP(s).

for CA publishing, a few seconds seems easily achieved with reasonable

for RPs pulling, 600s may be optimistic in the short term given
  o the load it will put on publication services
  o and one notorious repo which is against spec
but it should be achievable in a while.  an hour would be the longest
acceptable in my mind today.

for the router(s) pulling from the RP(s), 300-3600s is a wide window.
but remember, the rpki-rtr protocol does have the equivalent of dns
notify, where the cache tells the router that it has some nice tasty
new data.  you're welcome :)

i imagine that few here are old enough to remember when curtis only
updated the backbone (there was only one) routing peering once a week
on wednesday.

if we want the internet to rely on this stuff, it's time to get into the
21st century.