Publications

Brenkosh, Joseph P.; Vaughan, Janice M.

Abstract not provided.

Wolf, Jimmie V.; Brenkosh, Joseph P.

Abstract not provided.

Brenkosh, Joseph P.; Wolf, Jimmie V.

Abstract not provided.

Brenkosh, Joseph P.; Vaughan, Janice M.

Abstract not provided.

Wolf, Jimmie V.; Brenkosh, Joseph P.

Abstract not provided.

Brenkosh, Joseph P.; Wolf, Jimmie V.

Abstract not provided.

Brenkosh, Joseph P.; Wolf, Jimmie V.

For over two years, Sandia National Laboratories has been using a Gigabit Passive Optical Network (GPON) access layer for selected networks. The GPON equipment includes the Tellabs 1150 Multiservice Access Platform (MSAP) Optical Line Terminal (OLT), the Tellabs ONT709 and ONT709GP Optical Network Terminals (ONTs), and the Panorama PON Network Manager. In late 2013, the Tellabs equipment was updated to Software Release FP27.1_015130. Because a new software release has the potential to affect performance and functionality, it needed to be thoroughly tested. This report documents that testing. It also provides a comparison between the current release and the previous Software Release FP25.5.1_013274 that was being used.

Brenkosh, Joseph P.; Wolf, Jimmie V.

Abstract not provided.

Brenkosh, Joseph P.; Wolf, Jimmie V.

Abstract not provided.

Brenkosh, Joseph P.

Abstract not provided.

Brenkosh, Joseph P.

Abstract not provided.

Brenkosh, Joseph P.; Roybal, Glen R.; Heckart, David G.

Abstract not provided.

Witzke, Edward L.; Brenkosh, Joseph P.; Riblett, Loren E.; Wiseman, James M.

Abstract not provided.

Witzke, Edward L.; Brenkosh, Joseph P.; Riblett, Loren E.; Wiseman, James M.

Abstract not provided.

ACM Computer Communication Review

Witzke, Edward L.; Riblett, Loren E.; Wiseman, James M.; Green, Karl L.; Brenkosh, Joseph P.

Abstract not provided.

Witzke, Edward L.; Riblett, Loren E.; Wiseman, James M.; Green, Karl L.; Brenkosh, Joseph P.

Abstract not provided.

Brenkosh, Joseph P.

Abstract not provided.

Brenkosh, Joseph P.; Dirks, David H.; Gossage, Steven A.; Pratt, Thomas J.; Schutt, James A.; Heckart, David G.; Rudolfo, Gerald F.; Trujillo, Sandra T.

Gigabit Passive Optical Networks (GPON) is a networking technology which offers the potential to provide significant cost savings to Sandia National Laboratories in the area of network operations. However, a large scale GPON deployment requires a significant investment in equipment and infrastructure. Before a large scale GPON system was acquired and built, a small GPON system manufactured by Motorola was acquired and tested. The testing performed was to determine the suitability of GPON for use at SNL. This report documents that testing. This report presents test results of GPON system consisting of Motorola and Juniper equipment. The GPON system was tested in areas of data throughput, video conferencing, VOIP, security, and operations and management. The GPON system performed well in almost all areas. GPON will not meet the needs of the low percentage of users requiring a true 1-10 Gbps network connection. GPON will also most likely not meet the need of some servers requiring dedicated throughput of 1-10 Gbps. Because of that, there will be some legacy network connections that must remain. If these legacy network connections can not be reduced to a bare minimum and possibly consolidated to a few locations, any cost savings gained by switching to GPON will be negated by maintaining two networks. A contract has been recently awarded for new GPON equipment with larger buffers. This equipment should improve performance and further reduce the need for legacy network connections. Because GPON has fewer components than a typical hierarchical network, it should be easier to manage. For the system tested, the management was performed by using the AXSVison client. Access to the client must be tightly controlled, because if client/server communications are compromised, security will be an issue. As with any network, the reliability of individual components will determine overall system reliability. There were no failures with the routers, OLT, or Sun Workstation Management platform. There were however four ONTs that failed. Because of the small sample size of 64, and the fact that some of the ONTs were used units, no conclusions can be made. However, ONT reliability is an area of concern. Access to the fiber plant that GPON requires must be tightly controlled and all changes documented. The undocumented changes that were performed in the GPON test lab demonstrated the need for tight control and documentation. In summary, GPON should be able to meet the needs of most network users at Sandia National Laboratories. Because it supports voice, video, and data, it positions Sandia National Laboratories to deploy these services to the desktop. For the majority of corporate network users at Sandia National Laboratories GPON should be a suitable replacement for the legacy network.

Brenkosh, Joseph P.

Abstract not provided.

Brenkosh, Joseph P.

Abstract not provided.

Brenkosh, Joseph P.

Abstract not provided.

Kellogg, Brian R.; Kellogg, Brian R.; Brenkosh, Joseph P.

As part of the Testing Evaluation and Qualification Project, which was contracted by Organization 9336, this paper compares three cubicle-class switches from various vendors to assess how well they would perform in the unclassified networks at Sandia National Laboratories. The switches tested were the SMC TigerSwitch 6709L2, the Cisco Catalyst 2950G-12, and the Extreme Summit 5i. Each switch was evaluated by testing performance, functionality, interoperability, security, and total cost of ownership. The results of this report show the SMC TigerSwitch as being the best choice for cubicle use because of its high performance and very low cost. The Cisco Catalyst is also rated highly for cubicle use and in some cases may be preferred over the SMC TigerSwitch. The Extreme Summit 5i is not recommended for cubicle use due to its size and extremely loud fans but is a full featured, high performance switch that would work very well for access layer switching.

Eldridge, John M.; Tarman, Thomas D.; Brenkosh, Joseph P.; Dillinger, John D.; Michalski, John T.; Michalski, John T.

The recent unprecedented growth of global network (Internet) usage has created an ever-increasing amount of congestion. Telecommunication companies (Telco) and Internet Service Providers (ISP's), which provide access and distribution through the network, are increasingly more aware of the need to manage this growth. Congestion, if left unmanaged, will result in a degradation of the over-all network. These access and distribution networks currently lack formal mechanisms to select Quality of Service (QoS) attributes for data transport. Network services with a requirement for expediency or consistent amounts of bandwidth cannot function properly in a communication environment without the implementation of a QoS structure. This report describes and implements such a structure that results in the ability to identify, prioritize, and police critical application flows.