(7) VTEP1 will receive and de-encapsulate the packet and deliver it to SRV-A VTEP2 encapsulates the ARP reply with a VXLAN header and will unicast it to VTEP1. (3) Enhanced VXLAN with ARP Termination: MAC distribution done by VSM, unknown unicast dropped, ARP requests are handle locally at VEM (2) Enhanced VXLAN with MAC Distribution: MAC distribution done by VSM, unknown unicast dropped, ARP request replicated to every VTEP in a particular VXLAN (1) Enhanced VXLAN (unicast mode): VEM replicates BUM traffic every VTEP in a particular VXLAN The Nexus 1000v support three VXLAN unicast operation modes: VXLAN with Unicast Control Plane (Nexus 1000v) (8) Once the Mac Address information is learned, additional packets are Fed to the corresponding VTEP address. In this section, we will describe the third mode: Enhanced VXLAN with ARP Termination. (1) When a new VM is instantiated in a VXLAN the hypervisor notifies the Virtual Ethernet Module (VEM). (4) The VSM sends the mapping table to all VEMs with VTEPs in a particular VXLAN (3) The Virtual Supervisor Module (VSM) continuously aggregates the VXLAN VTEP local table information (2) The VEM adds the VM MAC Address information to the VXLAN VTEP local table. (5)When SRV-A sends ARP request looking for SRV-B, since the MAC Address information is in the local VEM table, the VEM will generate the ARP reply. #CISCO MAC ADDRESS TABLE LEARNING MODE CONVERSATIONAL SERIES#.
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