Am 2013-10-31 17:31, schrieb Sander Steffann:
I'll explain one experiment and will be crystal ear about it.
(1) We want to have a LISP site send to both LISP sites and not LISP
sites.
(2) We want an ITR to do mapping database lookups when the destination
address is an EID.
(3) We want the ITR to forward packet s by doing a traditional FIB
lookup when the destination is not an EID.
I understand what the technical idea is. There are already EIDs out
there (including my own network) that are not in any special prefix.
Therefore "address is in special prefix" != "address is an EID".
Unless you break LISP for already existing sites I don't see how
having a special prefix is going to help in (correctly) determining
whether an address is an EID.
Consider every consumer gets a random PI-prefix out of the global
unicast address space. Now you have two problems with a public PITR:
1. What prefixes does the public PITR have to announce? Where to get the
list from? Scan all Map servers?
2. Billions of random PI-prefixes need millions or even billions of
BGP-routes to be announced by the public PITR via BGP.
If there's one dedicated EID address space a public PITR only has to
announce ONE BGP-route to himself.
Best regards,
Renne
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