Domain Name Service
Domain Name Service (DNS) is a technology which translates domain names to IP addresses. It also lists mail exchange service for transferring e-mail.
.edu Domain Names
Request DNS Changes for domains ending in .umn.edu
Request DNS Changes for domains ending in washington.edu
.com .net or .org Domain Names
DNS Requests for domains ending in .com, .net, .org, etc. are provided through alternate service providers. Customers may choose any vendor, however the Office of Information Technology (OIT) recommends EasyDNS. OIT provides intervention support when applicable for customers who select EasyDNS.
Departmental DNS Management
OIT offers IP management in our Infoblox appliance-based solution to departments using the Service Gateway as the user interface.
U of M Network Administrators need access to the Service Gateway in order to manage their own DNS. If your department is migrated to the Service Gateway, ask your department's primary contact to grant you access. If your department is not migrated use 1-HELP (612-301-4357) for any DNS changes you need.
DnsSyncCheck - DNS Manual Cache Management
OIT offers a DNS Cache server management tool called DnsSyncCheck. The application queries our IP Address Management appliance for reference data, systematically performs the same query on our Authoritative Slave servers as well as our Anycast Cache servers, and then compares the datum from each query to the reference. If there are any differences to the reference, the Anycast Cache is invalidated for the probed records. The DnsSyncCheck tool can be used to speed up moves or changes of DNS records.
Dynamic Host Configuration Protocol (DHCP) is a network protocol that enables a DHCP server to automatically assign an IP address to an individual computer, allowing you to move your computer from one DHCP-enabled location to another without reconfiguring it. OIT has enabled DHCP services to several classrooms as well as wireless Access Points (AP) for use by people who have a laptop. In addition, all of the residence halls are configured for DHCP services in the student rooms.
DHCP provides a number of benefits for the University community:
- Users no longer need to manually configure their IP address
- There are fewer calls for help with automatically generated IP numbers
- University employees who have a laptop can roam throughout the campus and plug into one of the kiosks currently available in the West Bank Union, the St. Paul Student Center, and on the East Bank
MacView - Address Tracking
OIT tracks addresses for all IP, MAC Address and Switch Ports that are under our management. The application MacView uses Management Authorization from Service Gateway to control access to the data served by MacView.
The Internet is undergoing the most significant change in its history. Unprecedented growth and a plethora of network-based devices are forcing a change to TCP/IP protocol. The current network addressing scheme, IPv4, has become inadequate – unable to provide enough addressing space to serve a growing Internet.
IPv6, the next-generation Internet protocol provides exponentially more addressing space. IPv6 provides a smarter packet and a more efficient use of the Internet. This opens the door for growth in services such as Voice over Internet Protocol, electronic conferencing and gaming, to name just a few.
- IPv4 subnets at the U of M are 99% allocated.
- The IPv4 address supply, at the global level, has been exhausted. IANA (Internet Assigned Number Authority) no longer has IPv4 network addresses for distribution.
- The seven RIRs (Regional Internet Registries) have only a minimal number of IPv4 network addresses left for distribution.
- IPv6 has been developed to augment the supply of address, eventually replacing IPv4.
- Issue: IPv6 cannot talk to IPv4 and IPv4 cannot talk to IPv6.
- Countries around the world, especially 3rd world countries, are rapidly adopting IPv6.
- This affects our ability to connect with the world, connecting with:
- Remote Students
- Potential Faculty
- Very soon, there will be someone with only an IPv6 address available to him. If that person tries to reach the University of Minnesota, and if the University of Minnesota site or application he is trying to reach is only available via IPv4, that person will not be able to connect with the U.
University’s IPv4 Status: Overall 99% allocated with /20, /21, /22 and /23 subnets 100% allocated, plus /26, /27 and /28 subnets well over 95% allocated.
University’s IPv6 Status:
- IPv6 has been extended to all core nodes.
- OIT can provide IPv6 subnets throughout the Twin Cities campus and has extended IPv6 to Duluth, Crookston.
- Some of our customers already have IPv6 subnets in a test environment.
- OIT currently has some of our websites accessible via IPv6, for testing purposes.
- OIT has done all it can to provide IPv6 until our customers indicate readiness. It is time for those responsible for outward facing services to begin preparing web servers, accessible databases, and other network devices, identified by IP address, for IPv6 accessibility
You need to:
- Create IPv6 in your development environment.
- You need to run services on that server (Development Server + IPv6 subnet + Services = Test).
- Define how you will migrate your services in production to IPv6.
- When you are comfortable, move those services to IPv6.
NTS has no current plans to eliminate IPv4. Questions to the OIT IPv6 team at OIT-IPv6@umn.edu
World IPv6 Day
On 8 June, 2011, Google, Facebook, Yahoo!, Akamai and Limelight Networks will be amongst some of the major organizations that will offer their content over IPv6 for a 24-hour "test flight". The goal of the Test Flight Day is to motivate organizations across the industry – Internet service providers, hardware makers, operating system vendors and web companies – to prepare their services for IPv6 to ensure a successful transition as IPv4 addresses run out. (see http://isoc.org/wp/worldipv6day/)
It is important for you to begin adopting IPv6, in tandem with IPv4, now. OIT is prepared to provide you with IPv6 addresses for testing upon request, provided you have a testing environment (sandbox) ready and an adoption plan ready.
The OIT-IPv6 team is available for your questions.
- Team members can meet with you, if needed.
- The team email is OIT-IPv6@umn.edu.