On Aug 11, 2009, at 12:46 PM, Dino Farinacci wrote:
Every host I'm aware of has a facility for setting up an interface
that routes some set of packets--including potentially the default
route--through a tunnel interface that then passes the packet to
userspace for processing.
We call "LISP tunnels" as "dynamic encapsulating tunnels" where an
implementation must not implement the tunnel as a logical interface.
The implementation cannot scale if it does this. You get the level
of indirection by doing another lookup in another data structure
called the "map-cache".
I don't think I understand this...
Why couldn't LISP be implemented as a logical interface that
encapsulates or not based on the contents of the LISP Mapping cache
and the results of mapping lookups?
Margaret
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