This Standard specifies the 100BASE-X PMD (including MDI) andfiber optic medium for a short wavelength, multimode fiber,100BASE-SX. In order to form a complete 100BASE-SX Physical Layerit shall be integrated with the 100BASE-X and PMA in accordancewith clause 24 of IEEE Std. 802.3-1998, which is assumedincorporated by reference. As such, the 100BASE-SX PMD shall complywith the PMD service interface according to clause 24.4.1 of IEEEStd. 802.3-1998.
This Standard also specifies the Media Conversion Sublayer,which extends the Auto-Negotiation function defined in IEEE Std.802.3-1998 to fiber optic media. With the introduction of the MediaConversion Sublayer, devices sharing a fiber optic link segment canconfigure automatically to take advantage of their fullcapabilities. By exchanging information during an initializationphase, the link partners determine the operational capabilities ofeach other, and choose one based on a priority resolution functiondefined in this Standard. The supported management capabilitiesallow enabling and disabling the Auto-Negotiation function. It alsoforces a specific operational data rate and duplex mode. The MediaConversion Sublayer extends the Parallel Detection function to thefiber optic environment. The Parallel Detection function allows forthe recognition of 10BASE-FL and 100BASE-SX compatible devices,even when those devices do not include the Auto-Negotiationfunction. This Standard is intended for LED based systems only.
- Edition:
- 01
- Published:
- 05/01/2001
- Number of Pages:
- 46
- File Size:
- 1 file , 1.4 MB
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