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IP Addressing Scheme
With the increase of wide-area microwave networks supporting various VoIP and supplemental radio systems, it is necessary to standardize on an IP addressing scheme that can accommodate a switched network with multiple gateways.
Site Allocations
Each site should have its own /24 (172.20.x.0-172.20.x.254) address space. The digits in the “x” position are determined by a site identifier, such as a common repeater frequency. For example, the UT Dallas site uses the 172.20.43.0/24 address space because the K5UTD VHF repeater is on 145.43MHz. The K5RWK site uses 172.20.12.0/24 because of the 147.12MHz repeater.
If a site does not have unique digits to identify itself, it shall be assigned an address in the 172.20.200.0-172.20.254.0 address space.
| Site | Address Space |
|---|---|
| Richardson - Palisades | 172.20.12.0/24 |
| Denton Co EOC | 172.20.17.0/24 |
| PARK Plano MCP | 172.20.18.0/24 |
| PARK - Prestige | 172.20.25.0/24 |
| PARK THC - Presbyterian | 172.20.35.0/24 |
| The Colony Water Tower | 172.20.38.0/24 |
| UT Dallas | 172.20.43.0/24 |
| Rosston | 172.20.49.0/24 |
| Irving - Baylor S&W | 172.20.72.0/24 |
| N5ERS Tower - Grapevine | 172.20.85.0/24 |
| TWU - Guinn Hall | 172.20.92.0/24 |
| Dallas REACT | 172.20.96.0/24 |
| Kealy Tower | 172.20.200.0/24 |
| Little Elm Water Tower | 172.20.201.0/24 |
| Providence Water Tower | 172.20.202.0/24 |
| Richardson EOC | 172.20.203.0/24 |
| Delta V Instruments | 172.20.204.0/24 |
| Crossroads/Mustang WT | 172.20.205.0/24 |
| TWU - Stark Hall | 172.20.220.0/24 |
| PARK Frisco - Hillcrest | TBD |
Device Allocations
Different sites will be required to accommodate different classes of devices. It can be assumed that most sites will have a managed switch, at least one backhaul radio, and some devices that are connected to the network. Certain sites will have an internet gateway.
| Addresses | Device Type |
|---|---|
| 172.20.xx.1 | Default Gateway (if applicable) |
| 172.20.xx.2-9 | Site Switches |
| 172.20.xx.10-49 | WiFi Radios |
| 172.20.xx.50-99 | Application Devices |
| 172.20.xx.100-199 | DHCP Range for local access |
| 172.20.xx.200-254 | Reserved |
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