Basic Computer Networking at the Toolik Field Station

Basic Computer Networking at the Toolik Field Station Dr. Todd Valentic Center for Geospace Studies SRI International Dec 2, 2003 Veco Polar

Basic Network Components Hosts– Computers, printers, servers NIC– Network interface card Interconnect– Cables or wireless Switch– Common connection point Router– Communicates with external networks Dec 2, 2003 Veco Polar

Wireless Networking - Connect to wired LAN through an access point. - Hosts use a wireless network interface card (NIC) to talk to the access point. - IEEE-802. 11 b - 11 Mbps - IEEE-802. 11 a - 54 Mbps - IEEE-802. 11 g - 11/54 Mbps Toolik wireless network is IEEE-802. 11 b. Dec 2, 2003 Veco Polar

Wireless Bridges Access points can also be used to connect two wired networks One central access point, several remote access points Each access point can also service local wireless hosts Dec 2, 2003 Veco Polar

Toolik Field Station Network Dec 2, 2003 Veco Polar

Toolik Network Issues ● Good news: key network infrastructure is holding up well and meeting demand. ● T 1 offsite fiber can handle current load. ● Ability to add more voice-over-IP phones. ● ● 802. 11 b wireless migration to 802. 11 g (backwards compatible, 5 times faster) As Station usage increases, consider installing fiber to select buildings Dec 2, 2003 Veco Polar