... customers A, B, C, and D.192.1 68. 0.0/23, 192.1 68. 2.0/23, 192.1 68. 4.0/22, and 192.1 68. 8.0/21 are all subnets of 192.1 68. 0.0/2016CIDR and Route SummarizationPropagating VLSM and supernet routes ... hundreds or thousands of hosts.12 11111111.00000000.00000000.00000000 /8 (255.0.0.0) 16,777,216 host addresses 11111111.10000000.00000000.00000000 /9 (255.1 28. 0.0) 8, 388 ,6 08 host addresses ... Route”13 11111111.00000000.00000000.00000000 /8 (255.0.0.0) 16,777,216 host addresses 11111111.10000000.00000000.00000000 /9 (255.1 28. 0.0) 8, 388 ,6 08 host addresses 11111111.11000000.00000000.00000000...