Information Office Program
Michael J. Liszewski
Information Office Program Manager
Phone: 928.556.7458
E-mail: mjliszew@usgs.gov
Network
Network - GCMRC computer interconnectivity is provided using TCP/IP network communication protocol running on a 1000baseT and 100baseT network media. This media consists of Fiber Optic cabling between buildings and Cat5e/Cat6 internal to the buildings down to the desktop. Patch cables are purchased or built to Cat5e standards to insure compatibility with 1000baseT throughput. Network traffic is arbitrated by 5 3COM switches and hubs operating at 100 Mbps and 1 Gigabit (Gbps).
Hubs and switches are interconnected by fiber or 1 Gbps cable. All are monitored for throughput and port capacity/failure. The connections to all servers are 1 Gbps and all servers run on the same switch. This facilitates network backup and file transfer. GIS and Survey connections are 1 Gbps, or are 100 Mbps and scheduled for upgrade to 1 Gbps. This facilitates the massive amount of data processed. The majority of desktops connections are 100 Mbps. This is our basic network connectivity for smaller file transfers, email and day-to-day processing. There are still a few 10 Mbps connections that are planned for upgrade. Connections are in a building scheduled for renovation. As switches and hubs are replaced due to equipment failure, the entire backbone will move to 1Gbps connectivity.