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Pattern for Evaluation           -------------------    -------             |R1                |   |R2    |             |  --    --    --  |   |  --  |    ------             | |L1|  |L2|  |L3| |   | |L4| |   |R3    |             |  --    --    --  |   |  --  |   |  --  |             |   :     :     :  |   |   :  |   | |L5| | Control      ---+-----+-----+--     ---+--    |  --  | Plane           :     :     :          :      |   :  | ----------------+-----+-----+----------+------+---+--+- Data            :     :     :          :      |   :  | Plane          --     :    --         --      |  --  |           ----|P1|--------|P3|-------|P4|-----+-|P5|-+-                -- \   :  / --         --      |  --  |                    \ -- /                     |      |                     |P2|                       ------                      -- Pi is a physical node (bearer/data/transport plane) node - Li is a logical control plane entity that manages a single data plane (abstract) node; Li = logical node id or "TE router id" - Ri is a control plane "router“ e.g. (advertising) Router_IDNote: the is the (Li in the figure) - R3 represents an LSR with all components collocated. - R2 shows how the "router" component may be disjoint from the switch - R1 shows how a single "router" may manage multiple switches  -------------- |R4 | | ---------- | | | L6 | | | | | | | -+------+- | ---:------:--- : : +------+------+---------+ : : ---:------:--- |P8 : : | | -- -- | --+-|P |----|P |-+-- | -- -- | -------------- abstract node

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