Peering Policies and Route Servers

Cengiz Alaettinoglu cengiz at
Tue Apr 30 17:12:40 UTC 1996

Paul Ferguson (pferguso at on April 29:
> One detractor, to the best of my knowledge, is that the route servers are
> not exactly 'dynamic', meaning that they are updated a couple of times
> during the course of the day to reflect any changes in routing policy.
> Therefore, the possibility for blackhole'ing packets exists.
> I'm sure someone will correct me if I'm remiss.  :-)

Yes, I will do that:-)

Route Servers are dynamic, they process upto 6000 routing updates a
minute (see

Route Servers are reconfigured with up to date policy 6 times a day,
i.e. every four hours. Hence, a brand new route registered in IRR may
not be announced by the route servers to the NSPs whose policies are
prefix based for up to at most 4 hours. I think this is what you are
referring to.


Cengiz Alaettinoglu           Information Sciences Institute
(310) 822-1511                University of Southern California

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