The Princeton Private Network (PPN) is a network physically separate from the more common Campus Data Network (CDN) or the OIT VoIP Network. The Princeton Private Network is sometimes used to provide network connection for dedicated appliances which do not need to talk to the Internet or other devices on the Campus Data Network.
The PPN is logically divided into a number of VLANs (subnets). Each VLAN typically provides connectivity for devices that are part of a single service. Unlike the CDN where each VLAN provides service in a particular set of buildings, PPN VLANs are typically campus-wide.
This document provides a brief list of PPN VLANs and each VLAN's intended purpose.
Most PPN VLANs are intentionally standalone, unable to route traffic from/to any other PPN or CDN networks. In some cases, a set of PPN VLANs are grouped into a routing domain so they can communicate (via IP routing) with each other. In some cases, a PPN VLAN may be part of the CAMPUS routing domain, so it may communicate with the CDN.
| PPN Network | Description |
|---|---|
| bargainnet | Point of Sales terminals which do not accept credit cards, and associated servers |
| kachingnet | Point of Sales terminals which accept credit cards, and associated servers |
| knockknocknet |
Life Safety and Security Systems Keyless Locks: hotspots and gateways
(member of the DOORLOCKS routing domain) |
| lightnet | Facilities Engineering: Lutron lighting controls and servers |
| opensesamenet |
Life Safety and Security Systems Keyless Locks: servers
(member of the DOORLOCKS routing domain) |
| ppnnet |
Facilities Engineering: Electric Power Meter Reading (old)
Point of Sales terminals which do not accept credit cards, and associated servers miscellaneous other applications |
| russnet | Facilities Engineering: Russ Electric Gear in HPCRC |
| smilenet | Life Safety and Security Systems: Campus Video Monitoring System (CVMS) |
| stellanet | Life Safety and Security Systems: Card Access Control Systems (CACS): servers and I-STARS |
| wattnet | Facilities Engineering: Electric Power Meter Reading (new) |
That information typically includes the subnet's IP address and IP network mask and ("netmask"). If the network has a default IP router (a.k.a. "gateway"), that will also be displayed. (The IP broadcast address isn't displayed, as for all OIT-wire networks it is identical to the subnet's IP address; we use the "all-zeros" broadcast address style.)
Another way to obtain the network mask, default IP router (if any), and broadcast address appropriate for a specific IP address is to Default IP Routers, Network Masks, and Broadcast Addresses.