1.28-Tbps Full-Duplex Gobi Reference Design
The Gobi reference system is based on modular architecture and utilizes a mid-plane design. At the front end, up to 16 line cards can be plugged in, each providing up to 80Gbps of user bandwidth. At the rear end, the Gobi can be populated with up to 8 fabric cards providing a full-duplex, non-blocking switching capacity of up to 1.28Tbps user bandwidth with 25% switching fabric redundancy. The Gobi chassis is designed to be NEBS compliant and fits into one-third of a 7-foot rack. The Gobi chassis can be further configured to work in a multi-chassis configuration. Thus, a Gobi-based system can scale up from one to hundreds of high bandwidth line cards.
The Gobi fabric cards utilize Broadcom's Dune Networks Fabrics FE devices. Four fabric cards are utilized in a 640-Gbps configuration with 3+1 redundancy, whereas a 1.28Tbps configuration with 6+2 redundancy utilizes 8 fabric cards. The Gobi chassis can be configured with a variety of line cards ranging in aggregate capacity from 10Gbps to 80Gbps, utilizing various available types of Dune Networks FAP devices.
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