Esercizi Subnetting
Determine address class of address.
Determine appropriate default subnet mask.
210.23.67.102
66.23.148.0
158.23.251.33
144.23.117.254
192.254.23.123
144.207.78.1
63.125.23.211
192.25.128.36
128.12.254.98
134.223.156.89
127.0.0.1
224.23.108.23
223.78.27.144
77.123.28.167
191.249.222.234
Determine the Appropriate Custom Subnet Masks:
Review: Subnetting and Custom Subnet Masks
Recommended Process
Determine address class of address.
First determine appropriate default subnet mask.
Second determine the appropriate custom subnet mask that provides:
Subnets >= Physical Segments
Host IDs >= Hosts per Physical Segment
Example
Scenario 1 | |
| Required Number of Physical Segments: | 5 |
| Maximum Number of Hosts/Physical Segment: | 5000 |
| Network Address: | 152.77.0.0 |
| | |
| Proposed Custom Subnet Mask: | 255.255.224.0 |
| Number of Subnets Supported: | 6 |
| Maximum Number of Host ID per Subnet: | 8190 |
Scenario 2 | |
| Required Number of Physical Segments: | 100 |
| Maximum Number of Hosts/Physical Segment: | 88,000 |
| Network Address: | 39.0.0.0 |
| | |
| Proposed Custom Subnet Mask: | |
| Number of Subnets Supported: | |
| Maximum Number of Host ID per Subnet: | |
Scenario 3 | |
| Required Number of Physical Segments: | 100 |
| Maximum Number of Hosts/Physical Segment: | 350 |
| Network Address: | 177.133.0.0 |
| | |
| Proposed Custom Subnet Mask: | |
| Number of Subnets Supported: | |
| Maximum Number of Host ID per Subnet: | |
Scenario 4 | |
| Required Number of Physical Segments: | 4 |
| Maximum Number of Hosts/Physical Segment: | 1,500,000 |
| Network Address: | 120.0.0.0 |
| | |
| Proposed Custom Subnet Mask: | |
| Number of Subnets Supported: | |
| Maximum Number of Host ID per Subnet: | |
Scenario 5 | |
| Required Number of Physical Segments: | 16 |
| Maximum Number of Hosts/Physical Segment: | 1,500 |
| Network Address: | 128.199.0.0 |
| | |
| Proposed Custom Subnet Mask: | |
| Number of Subnets Supported: | |
| Maximum Number of Host ID per Subnet: | |
Scenario 6 | |
| Required Number of Physical Segments: | 250 |
| Maximum Number of Hosts/Physical Segment: | 100 |
| Network Address: | 191.254.0.0 |
| | |
| Proposed Custom Subnet Mask: | |
| Number of Subnets Supported: | |
| Maximum Number of Host ID per Subnet: | |
Scenario 7 | |
| Required Number of Physical Segments: | 12 |
| Maximum Number of Hosts/Physical Segment: | 12 |
| Network Address: | 216.122.44.0 |
| | |
| Proposed Custom Subnet Mask: | |
| Number of Subnets Supported: | |
| Maximum Number of Host ID per Subnet: | |
Scenario 8 | |
| Required Number of Physical Segments: | 10 |
| Maximum Number of Hosts/Physical Segment: | 750,000 |
| Network Address: | 12.0.0.0 |
| | |
| Proposed Custom Subnet Mask: | |
| Number of Subnets Supported: | |
| Maximum Number of Host ID per Subnet: | |
Scenario 9 | |
| Required Number of Physical Segments: | 50 |
| Maximum Number of Hosts/Physical Segment: | 600 |
| Network Address: | 134.119.0.0 |
| | |
| Proposed Custom Subnet Mask: | |
| Number of Subnets Supported: | |
| Maximum Number of Host ID per Subnet: | |
Scenario 10 | |
| Required Number of Physical Segments: | 5 |
| Maximum Number of Hosts/Physical Segment: | 25 |
| Network Address: | 192.177.4.0 |
| | |
| Proposed Custom Subnet Mask: | |
| Number of Subnets Supported: | |
| Maximum Number of Host ID per Subnet: | |
Determine Subnet IDs and Ranges of Host IDs
Review: Subnetting and Custom Subnet Masks
Recommended Process
Determine address class of address.
First determine appropriate default subnet mask.
Second determine the appropriate custom subnet mask that provides:
Subnets >= Physical Segments
Host IDs >= Hosts per Physical Segment
Determine the Subnet IDs
Determine the ranges of Host IDs
Example
Scenario 1 | | |
| Number of Physical Segments: | 5 | |
| Maximum Number of Hosts/Physical Segment: | 5000 | |
| Network Address: | 152.77.0.0 | |
| | | |
| Proposed Custom Subnet Mask: | 255.255.224.0 | |
| Number of Subnets Supported: | 6 | |
| Maximum Number of Host ID per Subnet: | 8190 | |
| Subnet IDs: | 152.77.0.0 (Invalid) 152.77.32.0 152.77.64.0 152.77.96.0 152.77.128.0 152.77.160.0 152.77.192.0 152.77.224.0 (Invalid) | |
| | | 1st Host – Last Host on Subnet |
| Host ID Ranges per Subnet | 152.77.32.0 152.77.64.0 152.77.96.0 152.77.128.0 152.77.160.0 152.77.191.0 | 152.77.32.1 – 152.77.63.254 152.77.64.1 – 152.77.95.254 152.77.96.1 – 152.77.127.254 152.77.128.1 – 152.77.159.254 152.77.160.1 – 152.77.191.254 152.77.192.1 – 152.77.223.254 |
Scenario 2 | | | ||
| Number of Physical Segments: | 100 | | ||
| Maximum Number of Hosts/Physical Segment: | 88,000 | | ||
| Network Address: | 39.0.0.0 | | ||
| | | | ||
| Proposed Custom Subnet Mask: | | | ||
| Number of Subnets Supported: | | | ||
| Maximum Number of Host ID per Subnet: | | | ||
| Subnet IDs: | | | ||
| | | 1st Host – Last Host on Subnet | ||
| Host ID Ranges per Subnet | | | ||
Scenario 3 | | | ||
| Number of Physical Segments: | 100 | | ||
| Maximum Number of Hosts/Physical Segment: | 350 | | ||
| Network Address: | 177.133.0.0 | | ||
| | | | ||
| Proposed Custom Subnet Mask: | | | ||
| Number of Subnets Supported: | | | ||
| Maximum Number of Host ID per Subnet: | | | ||
| Subnet IDs: | | | ||
| | | 1st Host – Last Host on Subnet | ||
| Host ID Ranges per Subnet | | | ||
Scenario 4 | | | ||
| Number of Physical Segments: | 4 | | ||
| Maximum Number of Hosts/Physical Segment: | 1,500,000 | | ||
| Network Address: | 120.0.0.0 | | ||
| | | | ||
| Proposed Custom Subnet Mask: | | | ||
| Number of Subnets Supported: | | | ||
| Maximum Number of Host ID per Subnet: | | | ||
| Subnet IDs: | | | ||
| | | 1st Host – Last Host on Subnet | ||
| Host ID Ranges per Subnet | | | ||
Scenario 5 | | | ||
| Number of Physical Segments: | 16 | | ||
| Maximum Number of Hosts/Physical Segment: | 1,500 | | ||
| Network Address: | 128.199.0.0 | | ||
| | | | ||
| Proposed Custom Subnet Mask: | | | ||
| Number of Subnets Supported: | | | ||
| Maximum Number of Host ID per Subnet: | | | ||
| Subnet IDs: | | | ||
| | | 1st Host – Last Host on Subnet | ||
| Host ID Ranges per Subnet | | | ||
Scenario 6 | | | ||
| Number of Physical Segments: | 250 | | ||
| Maximum Number of Hosts/Physical Segment: | 100 | | ||
| Network Address: | 191.254.0.0 | | ||
| | | | ||
| Proposed Custom Subnet Mask: | | | ||
| Number of Subnets Supported: | | | ||
| Maximum Number of Host ID per Subnet: | | | ||
| Subnet IDs: | | | ||
| | | 1st Host – Last Host on Subnet | ||
| Host ID Ranges per Subnet | | | ||
Scenario 7 | | | ||
| Number of Physical Segments: | 12 | | ||
| Maximum Number of Hosts/Physical Segment: | 12 | | ||
| Network Address: | 216.122.44.0 | | ||
| | | | ||
| Proposed Custom Subnet Mask: | | | ||
| Number of Subnets Supported: | | | ||
| Maximum Number of Host ID per Subnet: | | | ||
| Subnet IDs: | | | ||
| | | 1st Host – Last Host on Subnet | ||
| Host ID Ranges per Subnet | | | ||
Scenario 8 | | | ||
| Number of Physical Segments: | 10 | | ||
| Maximum Number of Hosts/Physical Segment: | 750,000 |
| ||
| Network Address: | 12.0.0.0 |
| ||
| | | | ||
| Proposed Custom Subnet Mask: | | | ||
| Number of Subnets Supported: | | | ||
| Maximum Number of Host ID per Subnet: | | | ||
| Subnet IDs: | |
| ||
| | | 1st Host – Last Host on Subnet | ||
| Host ID Ranges per Subnet | | | ||
Scenario 9 | | | ||
| Number of Physical Segments: | 50 | | ||
| Maximum Number of Hosts/Physical Segment: | 600 |
| ||
| Network Address: | 134.119.0.0 |
| ||
| | | | ||
| Proposed Custom Subnet Mask: | | | ||
| Number of Subnets Supported: | | | ||
| Maximum Number of Host ID per Subnet: | | | ||
| Subnet IDs: | | | ||
| | | 1st Host – Last Host on Subnet | ||
| Host ID Ranges per Subnet | | | ||
Scenario 10 | | |
| Number of Physical Segments: | 3 | |
| Maximum Number of Hosts/Physical Segment: | 25 | |
| Network Address: | 192.177.4.0 | |
| | | |
| Proposed Custom Subnet Mask: | | |
| Number of Subnets Supported: | | |
| Maximum Number of Host ID per Subnet: | | |
| Subnet IDs: | | |
| | | 1st Host – Last Host on Subnet |
| Host ID Ranges per Subnet | | |
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