Fundamentos de interconectividad de redes

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Fundamentos de interconectividad de redes

  1. 1. Describing Subnet MasksCalculating The extended network number is defined by extending the defaultExtended Network netmask (with ones) contiguously into the host number field. ThisNumbers with extended netmask is often referred to as the subnet mask. EachSubnet Masks host-number bit that is masked (using the logical AND operator) becomes defined as a subnet number. Network numbers can be calculated using four types of subnet masks: • Byte bound • Nonbyte bound • Variable length • Permanent Describing Subnet MasksByte-Bound The graphic illustrates the use of a byte-bound subnet maskSubnet Masks (255.255.255.0) to extend the original network number.

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