The campus data network is attached to the commercial Internet, to Internet 2, and to ESnet.
Internet 2 is an advanced networking consortium led by the research and education community. It typically provides the University with connectivity to other Internet 2 sites at speeds higher than would normally be available via the commercial Internet. Most sites attached to Internet 2 also also attached to the commercial Internet.
ESnet, the Energy Sciences Network, is a high-speed network serving many U.S. Department of Energy scientists at various institutions.
The University's service providers are:
We have multiple commercial Internet service providers to maintain commercial Internet connectivity while one commercial ISP is unavailable. When a commercial ISP becomes unavailable, some commercial Internet traffic may be disrupted for several minutes as routing automatically adjusts to use the remaining provider(s).
When our Internet 2 ISP becomes unavailable, some Internet 2 traffic may be disrupted for several minutes as routing automatically adjusts to use the remaining provider(s).
While one or more Internet or Internet2 ISPs is unavailable, the University's aggregate Internet/Internet2 bandwidth is reduced. Internet service remains available, but may be degraded until all ISPs are again available. While the traffic is absorbed by the remaining service providers, one or more of those providers may be forced to run at full capacity, resulting in noticably degraded service.
Our ESnet connection is not redundant.