XFI

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XFI is a 10 gigabit per second chip-to-chip electrical interface specification defined as part of the XFP multi-source agreement. It was developed by the XFP MSA group. XFI's principal applications are for 10 Gigabit Ethernet, 10 Gigabit/sec Fibre Channel, SONET OC-192, SDH STM-64, 10 Gigabit/sec OTN OTU-2, and parallel optics links.

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[edit] Technical details

XFI provides a single lane running at 10.3125 Gbit/s when using a 64B/66B encoding scheme.

[edit] XFI in parlance

XFI is sometimes pronounced as "X" "F" "I" and other times as "ziffie".

[edit] Interworking with XAUI

As of the middle 2006 most 10 gig ethernet products use XAUI interface that has four lanes running at 3.125Gbit/s using 8B/10B encoding.

Most 10 Gigabit Ethernet Products require an off the shelf SerDes devices to make the transition from XAUI to XFI. Some devices, including one from Fujitsu, has an integrated 10 GBE devices that has both XAUI and XFI capabilities.

[edit] References