 is a summary route, which I'll cover next. 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, FastEthernet0/1 10.0.0.0/8 is directly connected, FastEtherneto/o 11.0.0.0/8 is directly connected, FastEthernet0/1 192.168.1.0/32 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 Summary (Group of Subnets) The term summary is used in the routing table to represent any group of routes. Technically, according to the Cisco documentation, a summary is a group of sub- nets, while a supernet is a group of major networks. Both are called summaries in the routing table. Thus, while the example routing table shows two summary entries, only the first is technically a summary route: 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, FastEthernet0/1 10.0.0.0/8 is directly connected, FastEtherneto/o 11.0.0.0/8 is directly connected, FastEthernet0/1 192.168.1.0/32 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 Chapter 9: Routing and Routers The last entry in the routing table, which is also reported as a summary, is a group of major networks, and is technically a supernet. The differentiation between supernets and summary routes is primarily an academic one. In the real world, both are routinely called summary routes or aggreg