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cisco ccna sign up.10101100. 00000001 172 1Figure 1-49 Example of IP Addresses and SubnetsSubnet No. Host No.00000001. 000000001 0So how do you determine how a network is subnetted? The network mask is the way to determine this. For a subnet IP address, the network mask associated with it has the network number and subnet number parts all set to I, and the host number1.4 Internet Protocol and Layer 3 Technologies 51The distance vectors are exchanged between neighboring routers until all routers generate a stable routing table. At this point, the routing protocol reaches convergence. Routing protocol messages are also periodically exchanged between mutually neighboring routers. If the link between the neighboring routers is broken, both routers detect the failure and immediately notify their respective other neighboring routers. Each neighboring router notifies its own neighboring router of the failure and updates the route accordingly until the routing protocol converges again.Some of them are all set to 0. For example, in Figure 1.49, the network mask for each subnet of the Class B network 172.16.0.0 is 255.255.255.0 or /24.2. Variable Length Subnet Mask (VLSM) According to the traditional IP subnetting rule, each Class A, B, and C IP network is divided into individual subnets with an equal number of IP addresses. This rule is inefficient because the number of devices to be accommodated in each subnet can be uneven.