What is the difference between 10GBASE-Sr and 10GBASE LR?

This one is actually pretty easy. SR stands for Short Reach, and LR stands for Long Reach. SR transceivers are almost always multi-mode, and optimized for high speeds over relatively short distances. However, the much higher-powered OM3 and OM4 formats can push that into the hundreds of meters for a single cable.

What does SFP stand for?

small form-factor pluggable
SFP stands for “small form-factor pluggable.” SFP transceivers are compact and hot-pluggable devices that act as an interface between networking equipment (switch, router, network card) and interconnecting cabling (copper or fiber).

What is the wavelength of the 10GBASE-SR SFP+ module?

Cisco 10GBASE-SR SFP+ transceiver module for MMF, 850-nm wavelength Cisco 10GBASE-SR SFP+ transceiver module for MMF, 850-nm wavelength, extended temperature range Cisco 10GBASE-LR SFP+ transceiver module for SMF, 1310-nm wavelength

Are the release notes for the Cisco Nexus 7000 series updated?

Note Release notes are sometimes updated with new information about restrictions and caveats. See the following website for the most recent version of the Cisco Nexus 7000 Series NX-OS Release Notes, Release 5.x Release Notes: Table 1 shows the online change history for this document. Created release notes for Release 5.1 (1).

How do I find the supported speeds for the 1000BASE-T SFP transceiver modules?

To find the supported speeds for the 1000BASE-T SFP transceiver modules in your Cisco device, see the Compatibility Matrix for 1000BASE-T Small Form-Factor Pluggable Modules. Copper 1000BASE-T SFP transceiver modules use standard four twisted-pair, Category 5 cable at lengths up to 328.08 feet (100 meters).

Are there any 10GBaseT SFP+ modules available?

There are no 10GBaseT SFP+ modules. If you are after a 10GBaseT switch the Nexus 2232TM Fabric Extender offers a 32 fixed port option. Seb.