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ITS Networking & Telecommunications

Data Network & Internet

Backbone Network

UMnet Backbone

The UMnet Backbone is one of three University of Michigan backbone data networks that connect a building's local area networks (LANs) to the Internet.

On-Campus Backbone Connections

U-M Ann Arbor Campus buildings and data centers are connected to the UMnet Backbone through Distribution Layer switches.

Off-Campus Backbone Connections

Off-campus locations of U-M departments and units can connect to the UMnet Backbone in various ways.

U-M Backbone Interconnect Network (UMBIN)

The UMBIN interconnects the three main campus backbone networks to the state network (Merit) and beyond to the Internet and to private educational and research networks.

U-M Science DMZ

U-M Science DMZ is a network configured for high performance scientific applications and is integrated into the U-M campus network.

U-M Virtual Firewall

The U-M Virtual Firewall Service is a network security service available to academic and administrative units on the Ann Arbor campus.

NOTE: The Virtual Firewall is scheduled to be replaced with a network Intrusion Prevention System (IPS) in 2014. Existing virtual firewalls will be maintained and supported, but ITS will no longer make investments in the service or expand its coverage. Capacity for additional subscriptions is extremely limited. Please contact ITS Information and Infrastructure Assurance (via the ITS Service Center) for assistance. More information will be provided as it becomes available.


Internet2 is a national and international collection of interconnected high performance data networks.

Michigan LambdaRail (MiLR)

MiLR is a very high-speed, special purpose, data network that provides connections to national and international research and education connection points throughout the world.

Network Operations and Support

UMnet Administration

UMnet Administration coordinates and maintains the U-M networking infrastructure and provides support to network administrators.

Network Operations Center (NOC)

The NOC monitors networks, including backbones and departmental LANs, and provides first-level troubleshooting for customers' networks 24/365.

Network Dashboard

See the Network Dashboard for current network status.

Maintenance & Repair Service Agreements

Service agreements with ITS Comm provide maintenance and repair services to departments.

Network Access

Residential High-Speed Internet Service

The University provides high-speed Internet access in residence halls via ResComp and in Northwood Community Apartments via the Northwood Net service.

Students, staff, and faculty members who live in group houses or in private residences can obtain high-speed Internet access through any number of commercially available Internet service providers.


MWireless and UM Wireless Network are available to all U-M students, faculty, staff and sponsored guests.

Virtual Private Network (VPN)

The U-M VPN is available to all U-M students, faculty, and staff.

Dynamic Host Configuration Protocol (DHCP)

The DHCP service automatically assigns network IP addresses.

Network Speed Testing

Network speed testing applications are used to test the speed of a stable network connection.


Speedtest.net is a commonly used application that uses a web browser and flash to test the connection speed from a device to a selected point on the Internet.


NetGauge/Speedtest is a U-M customized application that uses a web browser and flash to test the connection speed from a device to a point on the UMnet.

Speedtest.net and NetGauge/Speedtest can be used for network connections up to 1Gbps.


perfSONAR is used for more in-depth and higher speed network connections. It tests connection speed between two network points. There are multiple perfSONAR points located on the UMnet as well as around the globe.

Cabling & Circuits

Station Cable and Communications Outlets

Communications outlets wired with station cable provide room connections to voice and data networks.


ITCom installs and maintains UMnet Backbone Circuits and Point-to-Point Circuits.