SCCC’s Network Infrastructure
The College’s network system consists of individual campus data networks connected via a College-wide WAN. The campus networks include external connections to county and state entities, the Internet, dial-in services for faculty, administrators and staff, and a number of POTS lines carrying modem traffic.
The College's main WAN connection among its campuses is provided through Verizon’s 100M TLS service. The connection is organized in a “logical triangle” topology with each campus accessing the TLS cloud through a 100M fiber optic feed. The connections are the primary data/video intercampus links and allow for peer-to-peer communication from any campus to any campus.
Modem circuits, backup data and connectivity to external entities occur over separate links by campus as follows:
The Riverhead campus maintains additional connections to the Selden campus via two T1s (one is dedicated for data backup and the other is for voice) and has a 56kbps leased line for mainframe access. There is a dedicated T1 circuit with AT&T which provides campus-wide Internet access. There are also POTS lines for credit card devices and 16 lines available for faculty and administrative data dial-in services.
The Brentwood campus maintains additional connections to the Selden campus via two T1s (one is dedicated for data backup and the other for voice) and has a 56kbps leased line for mainframe communications. The Brentwood campus has two dedicated T1 circuits for Internet access. There are also POTS lines for credit card devices and a separate T1 circuit to provide Internet access to the Event/Convention Center.
The Selden campus has the mating end of the data and voice circuits from the Brentwood and Riverhead campuses. Thus, Selden has a total of four point-to-point T1 circuits and two 56kbps leased lines. External data network connectivity includes a 384kbps link to the Suffolk County Network, one T1 to SUNYNet (the State University of New York’s Intranet), three T1s to AT&T for host Internet servers and general campus-based Internet access, one T1 for faculty and administrative dial-in services (24 ports @ 33kbps), and POTS lines for credit card devices.
The College Data Network is made up of three WAN nodes (one per campus). Each node is comprised of a Cisco 37xx router and a Cisco 6509 core switch. The switches
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