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Supports: multicast addressing; parallel paths with load balancing; up to 127 hops (RIP only 15 hops)
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NLSP supports: hierarchical routing ( areas, domains, inter-networks <--> Level 1, Level 2, Level 3)
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Hierarchical addressing scheme:
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area-address = network-address (32 bits) and mask (32 bits)
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mask identifies how much of the network address refers to the area itself and how much to individual networks within the area
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example: network address = 123456C1 mask = FFFFFF00 area = 123456; network within area = C1
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