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Documentation associated with this web site's major categories (e.g., Wireless Networking, Host Database, Operating Systems) appears in those sections, not below. Below are documents which do not fit into any of this web site's major categories.


Princeton University Network Architecture
An overview of the University network's physical and logical architecture, along with network services.

Internet Service
An overview of the campus network's connections to the global Internet.

Services and Facilities

OIT Ethernet Service
OIT Ethernet Service allows University faculty, staff, and students to connect devices to the campus data network via an Ethernet interface. The service is available in practically every building on campus.

OIT VoIP Ethernet Service
OIT VoIP Ethernet Service is used to connect Voice over IP telephone handsets via Ethernet wiring. The service is available in a very small number of buildings.

OIT Static IP Service
OIT Static IP Service provides a static (unchanging) IP address and DNS hostname to your computer when it is attached to OIT Ethernet wiring on its "home network."

OIT Mobile IP Service
OIT Mobile IP Services let you temporarily attach your computer to the campus network in locations other than your "home" location and still receive IP service without reconfiguring your computer or updating its Host Database entry.

Temporary Unregistered Dormnet (TUD) IP Address Service
TUD Service allows devices attached to the Dormnet network via OIT Ethernet Service but not currently subscribed to Dormnet to have some limited access to campus network. This service is provided for the sole purpose of allowing students to submit Dormnet Subscription forms from their own computers attached to the Dormnet network via OIT Ethernet Service before those computers are receiving normal Dormnet service (because they are not yet subscribed to Dormnet).

Visitor IP (VIP) Service
Visitor IP Service provides Internet service to devices not registered in the Host Database when they are attached via Ethernet to the guestnet network in the guest rooms of Palmer House. (The service is not designed for use outside Palmer House.)

Virtual Private Network Services
OIT provides OIT SSL VPN Service ("Secure Remote Access (SRA)"). VPN service provides a degree of security for traffic crossing the network. It also provides a temporary Princeton University presence, and a temporary Princeton University IP address and hostname to a VPN client, even if the client is connected via the Internet outside the University.

OIT DNS Service (Domain Name Service)
A description of OIT DNS Service. Domain Name Service (DNS) provides access to the Internet's distributed database, often used to translate between domain names (e.g. foobar.Princeton.EDU) and IP addresses (e.g.

Network Time Protocol (NTP) Service
A description of the Network Time Protocol (NTP) Service we provide. The Network Time Protocol allows network-attached computing devices to synchronize their time/date clocks automatically.

OIT DHCP and BootP Services
DHCP (the Dynamic Host Configuration Protocol) and BootP (Boot Protocol) allow a network-attached device to learn some of its network configuration information (including its IP address) automatically. OIT DHCP Service is also used to provide OIT Mobile IP Service, Temporary Unregistered Dormnet (TUD) IP Address Service, and Visitor IP (VIP) Service.

OIT Static IP Recycling Facility (SIRF)
The OIT Static IP Recycling Facility (SIRF) locates OIT Static IP Addresses that have been unused for a long time; it recycles these addreses to help conserve them.

External Customer Networks
Describes a network service provided by OIT to some external organizations at the University.

Technical References

Campus Data Network ("Subnet") List
How to determine which Princeton University Campus Data Network (CDN) subnet is available in each building attached to the network. (You may also use this document to determine the subnet's IP network number, IP subnet mask, and IP default router; most people won't need that level of detailed information.)

OIT VoIP Service Network ("subnet") List
This document shows the association between buildings and the subnets that support OIT VoIP Service. These are not the subnets used for the "regular" campus data network.

Default IP Routers, Network Masks, and Broadcast Addresses
How to determine a computer's default IP router (a.k.a "gateway"), network mask (a.k.a. "netmask"), and broadcast address, based on the computer's assigned IP address.

IP Network Ranges at Princeton University
A list of IP network ranges that are part of the Princeton University network.

Princeton Private Network (PPN) VLAN ("subnet") List
Lists each PPN VLAN ("subnet") and a brief description of its intended purpose.

External Customer Network Assignments
A list of IP network ranges, subnet masks, and default routers for all external customer networks provided by OIT.

Traffic Filters on the Campus Network
Summarizes filters that block selected traffic on the campus network, with pointers to more detailed information.

Traffic Filters at the University's Internet Borders
A description of the filters that block selected traffic as it passes through OIT-managed borders between the campus network and the Internet.

Policies and Practices

OIT Networking & Monitoring Services: Device Blocking Policies
An overview of the most common reasons OIT Networking & Monitoring Services block devices from the network, how customers are notified of these blocks, and the timeframe for removing such blocks once the customer has resolved the issue.

Three Strikes Practice for Network Disruptions
OIT's practice for handling customers who inadvertently disrupt or degrade network service repeatedly.

Other Topics

How to Determine Your Device's Ethernet or Wireless Hardware Address
Instructions for determing the Ethernet or Wireless hardware address on some common platforms.

Connecting a Private Network Address Translator to the Campus Network
Describes issues specific to connecting a private Network Address Translator (NAT) to the campus network. Included are caveats and appropriate Host Database registration procedures.

Connecting a Private Ethernet Repeater, Bridge, or Switch to the Campus Network
Describes issues specific to connecting a private repeater, bridge, or switch to the campus network. Included are caveats and appropriate Host Database registration procedures.


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