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IPv4 class-C compact suballocation best practice
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| IPv4 class-C compact suballocation best practice | |
| 0 network | |
| 1-19 for external service endpoints or dhcp for human-handled terminals | |
| 20-39 for server mgmt | |
| 40-53 for network appliance mgmt (ex. routers or firewalls) | |
| 60-99 for various use (do not place physical servers or appliances) | |
| 100-119 dhcp or some floating IPs | |
| 120-139 for server alias | |
| 140-153 for network appliance alias | |
| 160-199 for various use (do not place physical servers or appliances) | |
| 200-219 dhcp or some floating IPs | |
| 220-239 for server OOB mgmt (ex. iLO or iDRAC) | |
| 240-253 for network appliance functional address | |
| 254 default gateway | |
| 255 broadcast |
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there's a trade-off between filtering alignment and ease human recognition. 20 is possible best unit for both goals.