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Dell EMC SmartFabric OS10 User Guide Release 10.5.0

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Configure source IP address on VTEP

When you configure a switch as a VXLAN tunnel endpoint (VTEP), configure a Loopback interface, whose IP address is used as the source IP address in encapsulated packet headers. Only a Loopback interface assigned to a network virtualization edge (NVE) instance is used as a source VXLAN interface.
  • Do not reconfigure the VXLAN source interface or the IP address assigned to the source interface if there is at least one VXLAN network ID (VNI) already assigned to a virtual-network ID (VNID) on the switch.
  • The source Loopback IP address must be reachable from a remote VTEP.
  • An IPv6 address is not supported as the source VXLAN address.
  • Do not assign the source Loopback interface to a non-default VRF instance.
  • Underlay reachability of remote tunnel endpoints is supported only in the default VRF.
  1. Configure a Loopback interface to serve as the source VXLAN tunnel endpoint in CONFIGURATION mode. The range is from 0 to 255. 
    interface loopback number
  2. Configure an IP address on the Loopback interface in INTERFACE mode. The IP address allows the source VTEP to send VXLAN frames over the L3 transport network. 
    ip address ip-address/mask
  3. Return to CONFIGURATION mode. 
    exit
  4. Enter NVE mode from CONFIGURATION mode. NVE mode allows you to configure the VXLAN tunnel endpoint on the switch. 
    nve
  5. Configure the Loopback interface as the source tunnel endpoint for all virtual networks on the switch in NVE mode. 
    source-interface loopback number
  6. Return to CONFIGURATION mode. 
    exit

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