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LISP-CONS Network Elements Content Access Routers (CARs) Querying-CARs Generate Map-Requests on behalf of ITRs Replying-CARs Hold authoritative mappings at level-0 of hierarchy Aggregate only EID-prefix upwards Respond with Map-Replies Content Distribution Routers (CDRs) Push around EID-prefixes with level-1 to n of hierarchy Aggregate EID-prefix upwards Advertise EID-prefixes in a mesh topology within level Forward Map-Requests and Map-Replies |