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Startup combines protocols for service aggregation

Posted: 21 Jun 2004 ?? ?Print Version ?Bookmark and Share

Keywords:mangrove systems? traffic aggregation system? ethernet? sonnet? metrompls?

Mangrove Systems Inc. debuted a traffic aggregation system that unifies Ethernet and Sonet with a unique double-encapsulation scheme.

Mangrove's "MetroMPLS" architecture seeks to make multiprotocol label switching more useful from a carrier central office to the distribution networks in metropolitan areas at the network edge.

For the central office, Mangrove will offer an "enhanced services shelf" dubbed Barracuda, using a 16-slot chassis with a dual packet and time-division multiplexed switching fabric. At the edges, Mangrove will offer two sizes of a Piranha system, which places the dual-fabric switch core inside an access concentrator optimized for 100Mb Ethernet and 155Mb Sonet.

Mangrove CEO Jonathan Reeves said the concept for most efficient combining of traffic types is to mix Ethernet, frame relay, ATM and packet-over-Sonet in the extended Martini encapsulation of MPLS, called pseudo-wire emulation or PWE3. The PWE3 traffic flows are then encapsulated using the generic framing protocol, for delivery over Sonet pipes.

Reeves said native Ethernet interconnect can be appropriate at times, but that edge-to-core aggregation systems should take advantage of data-aware Sonet encapsulation for the most efficient traffic options.

Mangrove, a startup founded by members of the team that launched Sahara Networks and Sirocco Systems, has implemented encapsulation in a board-level combination of a standard network processor, several FPGAs for traffic management and quality of service as well as dedicated microcode and firmware for handling traffic and policy descriptions.

The "Mangrove Interworking Engine" will be licensed to selected OEMs, representing another revenue stream for Mangrove as well as a way to get its PWE3/GFP concepts more widely accepted by the industry.

- Loring Wirbel

EE Times

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