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  OIT Home > Connect > Core Backbone
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Core Backbone


The first widely-deployed campus backbone was built using a shared broadband system based on Ungermann-Bass buffered repeaters. Each department was responsible for the acquisition of a router and suitable staff to manage their network connections. IP, IPX, and AppleTalk protocols were used on the backbone, with the College of Engineering providing 0.25 FTE staff time for coordination purposes. The next step in backbone evolution was based upon FDDI technology and went into production in the summer of 1996. It had several goals, including increased bandwidth, elimination of non-IP protocols on the backbone, and the introduction of OSPF routing. Most goals were realized, though the complete replacement of RIP by OSPF was not achieved. The FDDI network ceased opertions on September 30, 2002.

Steps towards implementation of the “Next Generation Backbone” (NGB) Phase I began in 1999, with a summary proposal to the Information Technology Planning Group. The project was rapidly approved by the Information Technology Board, with equipment specifications and vendor selection performed in 2000. Production service began on August 7, 2001. Key elements of Phase I include VLANs, optional centralized routing, and the elimination of RIP routing on the backbone.

The NGB backbone network provides connectivity between campus buildings and the routers leading to off-campus locations. The demarcation point between NGB and department networks is the physical port on the NGB building switch.

Current network status is available by calling (805) 893-2800. Network availability and utilization statistics, along with connection and configuration information, are available via the Network Operations Center (NOC) web page. Problem reports should be directed to your local network administrator.


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Last modified: 10/19/2007