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Proceedings Paper

Local area networking in a radio quiet environment
Author(s): Edwin L. Childers; Gareth Hunt; Joseph J. Brandt
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Paper Abstract

The Green Bank facility of the National Radio Astronomy Observatory is spread out over 2,700 acres in the Allegheny Mountains of West Virginia. Good communication has always been needed between the radio telescopes and the control buildings. The National Radio Quiet Zone helps protect the Green Bank site from radio transmissions that interfere with the astronomical signals. Due to stringent Radio Frequency Interference (RFI) requirements, a fiber optic communication system was used for Ethernet transmissions on the site and coaxial cable within the buildings. With the need for higher speed communications, the entire network has been upgraded to use optical fiber with modern Ethernet switches. As with most modern equipment, the implementation of the control of the newly deployed Green Bank Telescope (GBT) depends heavily on TCP/IP. In order to protect the GBT from the commodity Internet, the GBT uses a non-routable network. Communication between the control building Local Area Network (LAN) and the GBT is implemented using a Virtual LAN (VLAN). This configuration will be extended to achieve isolation between trusted local user systems, the GBT, and other Internet users. Legitimate access to the site, for example by remote observers, is likely to be implemented using a virtual private network (VPN).

Paper Details

Date Published: 27 November 2002
PDF: 10 pages
Proc. SPIE 4845, Advanced Global Communications Technologies for Astronomy II, (27 November 2002); doi: 10.1117/12.459503
Show Author Affiliations
Edwin L. Childers, National Radio Astronomy Observatory (United States)
Gareth Hunt, National Radio Astronomy Observatory (United States)
Joseph J. Brandt, National Radio Astronomy Observatory (United States)


Published in SPIE Proceedings Vol. 4845:
Advanced Global Communications Technologies for Astronomy II
Robert I. Kibrick, Editor(s)

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