- Understanding Class A Network Ip Addresses Ccna Hub
1 week ago Variable length subnet mask (VLSM) means to use a different (variable length) subnet mask on different subnets of the same major network (a given class A, B, or C network). VLSM allows the address space to be used more efficiently. For example, you are given the address space 172.17.0.0/16, and you need to address some LANs that may have up to 300 ...
1 week ago The first three entries are traditional Class A, B and C network addresses and use traditional masks. The last two are less traditional, "real world" examples. Note in line 4 the change in the third octet between network address and broadcast address. Line 5 shows what happens when a Class C network has been subnetted. Assigning an IP address