Friday July 4 2008
Information Technology Central Services at the University of Michigan
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UMnet Administration

The mission of UMnet Administration is to support the network administrators at the University of Michigan, coordinate the networking infrastructure and network numbers on campus, and maintain the UMnet Backbone and UM Backbone Interconnect Network (UMBIN) infrastructures.

UMnet Administration also manages and maintains the ITCS Virtual Firewall and Campus VPN services.

Backbone Router Services

The Network Information Search Form is available for you to search and review the current configuration of a network within the UMnet Admin database.

Internet Traffic Statistics are available for UMnet-connected LANs.

To establish new service or for questions regarding services or billing contact your ITCom Project Manager

For questions regarding a network, contact UMnet Admin or call 734-647-4200

For users experiencing network problems please call ITCom Repair at 734-647-8888

For information on UMnet's traffic scanning for hacks and infections:

Hackfinder Information

Please note that your network may be supported by other UM information technology providers:

UM Health System networks (IP addresses of 141.214.x.y) are administered by Medical Center Information Technology (MCIT).

College of Engineering networks (IP addresses of 141.212.x.y and some 141.213.x.y) are administered by Computer Aided Engineering Network (CAEN).

Policies

Scheduled Router Maintenance

What IP networks are assigned to the University of Michigan?

	67.194.0.0/16		UM Ann Arbor (UMnet, Wireless nets, Residence halls)
	141.211.0.0/16		UM Ann Arbor (UMnet, mostly Central and South campus)
	141.212.0.0/16		UM Ann Arbor (CAEN)
	141.213.0.0/17		UM Ann Arbor (CAEN)
	141.213.128.0/17	UM Ann Arbor (UMnet, mostly wireless nets and dorms)
	141.214.0.0/16		UM Ann Arbor (UMHS)
	141.215.0.0/16		UM Dearborn
	141.216.0.0/16		UM Flint
	192.12.80.0/24		Networks that connect UMnet to UMHS, CAEN and MichNet
	192.122.183.0/24	Networks that connect UMnet to UMHS, CAEN and MichNet
	192.231.253.0/24	UMnet/Merit NOC
	198.108.8.0/21		UM IP Telephony
	198.111.224.0/23	UMnet Internet2 lab networks
	198.111.226.0/24	UMnet Internet2 lab networks
	198.111.227.0/24	UM Ann Arbor (LSA admin, mostly servers)
	198.111.181.0/25	UM Ann Arbor (UMHS)
	207.75.144.0/20		UMnet off-campus networks, mostly in Ann Arbor and Dearborn

	ResHall networks are 141.213.135.0 and 141.213.155.0 through 141.213.223.256.

Information on specific networks can be found here

NOTE: UM received a new IP address allocation - 67.194.0.0/17 - on 20 August 2007

NOTE: UM received a new IP address allocation - 67.194.128.0/17 - on 29 May 2008

These two are merged into a single block: 67.194.0.0/16

Additional Resources

The following links are to be used for informational purposes only and are not necessarily supported by UMnet Administration.

Use and Assignment of Private IP addresses at UM
UMnet Intermapper Network Monitoring System
NOC UMnet Backbone Statistics

For More Information

UMnet Administration Group
umnet.admin@umich.edu

Phone: (734) 647-4200
4251 Plymouth Rd.
Arbor Lakes Building 3, Suite 1400
Ann Arbor, MI 48105-3640