Thursday, January 6, 2005

China's CERNET Tests 40 Gbps Overlay with Mintera, Cisco

CERNET (China Education and Research Network) successfully tested an "overlay" application integrating a 40 Gbps wavelength carrying live traffic on an in-service DWDM link between Beijing and Tianjin, China. The connection comprised a 16 channel DWDM infrastructure equipped with STM-16 (2.5 Gbps) per channel operating over 185 km of installed G.652 and G.655 fibers.

For the live trial, Mintera's 40 Gbps terminals were connected into the existing 16 x 2.5 Gbps DWDM line system and ran 40 Gbps traffic simultaneously with the existing 2.5 Gbps traffic. No modifications to the existing in-line amplifiers or optical mux/demux infrastructure were required. The 40 Gbps wavelength was turned-up in less than one hour. There was no traffic interruption on the live-link during the turn-up and the network ran error-free over a total period exceeding ten days.

CERNET and Mintera ran two 'client-side' trials. The first used Cisco Systems' 12000 Series Routers to feed 10 Gbps (STM-64c) traffic to Mintera's MI 4010S, which multiplexed the four STM-64c's up to 40 Gbps for transport across the existing infrastructure. CERNET loaded the Cisco 12000 Series Routers with live IP traffic and was able to monitor a doubling in traffic from network users as the new path provided by Mintera and Cisco became available and immediately relieved bottlenecks.

Mintera said the 40 Gbps link worked continuously and error-free for the full trial period of more than eight days. The second trial employed Cisco's CRS-1 system, which fed true 40 Gbps OC-768c traffic to Mintera's MI 4040S, which in turn transported this data over the infrastructure, again with no effect on the existing traffic. This test was run for two days, during which no errors were detected.

  • Mintera is based in Lowell, Massachusetts.

  • Mintera is headed by Dr. Terry F. Unter , who previously was Chief Operating Officer at Corvis Corporation.


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