tly connected, Serialo/o On the connected router, the summary route for 172.16.200.0/23 is present, but the more specific routes 172.16.200.0/24 and 172.16.201.0/24 are not. Major Network A major network is a network in its native form. For example, the 10.0.0.0/8 network has a native subnet mask of 255.0.0.0. The network 10.0.0.0/8 is therefore a major network. Referencing 10.0.0.0 with a prefix mask longer than /8 changes the route to a subnet, while referencing it with a mask shorter than /8 changes the route to a supernet. Two major networks are shown in the routing table: 172.16.0.0/16 is variably subnetted, 6 subnets, 2 masks 172.16.200.0/23 is a summary, 00:56:18, Nullo 172.16.200.0/24 is directly connected, Loopback2 172.16.201.0/24 is directly connected, Serialo/o 172.16.202.0/24 is directly connected, Loopback3 172.16.100.0/23 is directly connected, Loopback4 172.16.101.0/24 [90/2172416] via 11.0.0.1, 00:53:07, FastEtherneto/1 10.0.0.0/8 is directly connected, FastEtherneto/o 11.0.0.0/8 is directly connected, FastEtherneto/1 192.168.1.0/32 is subnetted, 1 subnets 192.168.1.11 [90/156160] via 11.0.0.1, 00:00:03, FastEtherneto/1 0.0.0.0/0 [1/0] via 11.0.0.1 10.0.0.0/7 is a summary, 00:54:40, Nullo 172.16.0.0/16 is also shown, but only as a reference to group all of the subnets under- neath it. The entry for 172.16.0.0/16 is not a route. The IP Routing Table Supernet (Group of Major Networks) A supernet is a group of major networks. In this example, there is a route to 10.0.0.0/7, which is a group of the major networks 10.0.0.0/8 and 11.0.0.0/8: 172.16.0.0/16 is variably subnetted, 6 subnets, 2 masks 172.16.200.0/23 is a summary, 00:56:18, Nullo 172.16.200.0/24 is directly connected, Loopback2 172.16.201.0/24 is directly connected, Serialo/o 172.16.202.0/24 is directly connected, Loopback3 172.16.100.0/23 is directly connected, Loopback4 172.16.101.0/24 [90/2172416] via 11.0.0.1, 00:53:07, FastEtherneto/1 10.0.0.0/8 is directly connected, FastEtherneto/o 11.0.0.0/8 is directly connected, FastEtherneto/1 19