N. BILLERICA, Mass. -- Avici Systems Inc. (Nasdaq: AVCI), a leading provider of scalable core routing solutions for intelligent IP-over-optical networks, today announced the successful completion of ongoing interoperability tests of its TSR® scalable core router's Multi-Protocol Label Switching (MPLS) capabilities at George Mason University's (GMU) Advanced Internet Lab. The tests validated the interoperability of Avici's MPLS offerings which enable carriers to use MPLS traffic engineering and Virtual Private Networks (VPNs) to roll out revenue generating, differentiated IP services.

The GMU interoperability tests focused on MPLS Label Distribution Protocol (LDP) and Resource Reservation Protocol for Traffic Engineering (RSVP-TE), which enable carriers to increase network efficiency through the use of VPNs and traffic engineering across an entire multi-vendor network. The TSR is the industry's most scalable MPLS core offering, supporting up to 15,000 tunnels as a midpoint router and up to eight classes of service per tunnel for differentiated service offerings, compared with competing products which typically only support hundreds of MPLS tunnels and four classes of service.

"MPLS LDP and RSVP-TE protocols are extremely important to carriers for the creation of a multi-service backbone," said Chris Nicoll, vice president of telecom infrastructure at industry analyst firm Current Analysis. "Avici continues to demonstrate leading-edge MPLS solutions to the marketplace, enabling service providers to unlock the power of a converged core network to carry legacy and new IP services."

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