269a91b8_ch_for_VMware_vSphere____Cisco__1_New_and_Changed_Information_Feature
[Description] After a configuration failure, interfaces are shut down to maintain accurate configuration. [Changed in release] 4.2(1)SV1(4) [Where Documented] Information About Interface Quarantine [Feature] 
Interface Quarantine
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