Cisco Nexus 1000V - Overview; Troubleshooting Process; Best Practices

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 21 of 48
Figure 19. Control0 Interface on the VSM and the Microsoft Hyper-V Host Management Physical NIC Used for Connectivity
Note: The Cisco Nexus 1000V relies on proxy Address Resolution Protocol (ARP) when control0 interface is
used for VEM-to-VSM communication. Proxy ARP must be enabled on the control0 VLAN in the gateway router.
Some customers prefer to move the Microsoft Hyper-V host management interface behind a Microsoft virtual
switch and share the physical interface with other virtual machines. In this scenario, no special Cisco Nexus
1000V configuration is needed to enable VSM-to-VEM communication (Figure 20).