Cisco Nexus 1000V Deployment Manual page 39

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Figure 32.

Fabric Failover Disabled for Cisco Nexus 1000V Uplink vNICs

Fabric failover is a unique capability found only in Cisco UCS that allows a server adapter to have a highly

available connection to two redundant network switches (fabric interconnects) without any NIC teaming drivers or

any NIC failover configuration required in the OS, hypervisor, or virtual machine. The Cisco VIC adapters - the

Cisco UCS M81KR VIC, VIC 1240, and VIC 1280 adapter types - enable a fabric failover capability in which loss of

connectivity on a path in use causes traffic to be remapped through a redundant path within Cisco UCS.

In the service profile definition for the vNICs used as Cisco Nexus 1000V uplinks, Host Control is set to Full

(Figure 33). This setting helps ensure that class-of-service (CoS) markings from the Cisco Nexus 1000V are

honored.

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