269a91b8_ch_for_VMware_vSphere____Cisco__1_New_and_Changed_Information_Feature
[Description] Connecting to upstream switches that do not support port channels using the MAC-pinning command. [Changed in release] 4.0(4)SV1(2) [Where Documented] Cisco Nexus 1000V Interface Configuration Guide [Feature] 
MAC Pinning
Cisco Nexus 1000V Port Profile Configuration Guide, Release 4.2(1)SV2(1.1) - New and Changed Information [Cisco Nexus 1000V Switch for VMware vSphere] - Cisco