Experiences with TCP/IP over an ATM OC12 WAN Metadata

Metadata describes a digital item, providing (if known) such information as creator, publisher, contents, size, relationship to other resources, and more. Metadata may also contain "preservation" components that help us to maintain the integrity of digital files over time.


  • Main Title Experiences with TCP/IP over an ATM OC12 WAN


  • Author: Nitzan, Rebecca L.
    Creator Type: Personal
  • Author: Tierney, Brian L.
    Creator Type: Personal


  • Sponsor: United States. Department of Energy. Office of Advanced Scientific Computing Research.
    Contributor Type: Organization


  • Name: Lawrence Berkeley National Laboratory
    Place of Publication: Berkeley, California
    Additional Info: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (United States)


  • Creation: 1999-12-23


  • English


  • Content Description: This paper discusses the performance testing experiences of a 622.08 Mbps OC12 link. The link will be used for large bulk data transfer, and as such, of interest are both the ATM level throughput rates and end-to-end TCP/IP throughput rates. Tests were done to evaluate the ATM switches, the IP routers, the end hosts, as well as the underlying ATM service provided by the carrier. A low level of cell loss, (resulting in <.01 % packet loss), decreased the TCP throughput rate considerably when one TCP flow was trying to use the entire OC12 bandwidth. Identifying and correcting cell loss in the network proved to be extremely difficult. TCP Selective Acknowledgement (SACK) improved performance dramatically, and the maximum throughput rate increased from 300 Mbps to 400 Mbps. The effects of TCP slow start on performance at OC12 rates are also examined, and found to be insignificant for very large file transfers (e.g., for a 10 GB file). Finally, a history of TCP performance over high-speed networks is presented.
  • Physical Description: 12 pages


  • Keyword: Computer Networks
  • Keyword: Data Transmission Systems
  • Keyword: Man-Machine Systems
  • Keyword: Performance Testing
  • STI Subject Categories: 99 General And Miscellaneous//Mathematics, Computing, And Information Science


  • Other Information: PBD: 23 Dec 1999


  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI


  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report


  • Text


  • Report No.: LBNL--44765
  • Grant Number: AC03-76SF00098
  • DOI: 10.2172/764365
  • Office of Scientific & Technical Information Report Number: 764365
  • Archival Resource Key: ark:/67531/metadc720224


  • Display Note: OSTI as DE00764365