Cisco Nexus 7000 Series Configuration Manual page 26

Guidelines and Limitations for VXLAN
• VXLAN with IGMP snooping on VTEP tunnel interface is supported. You can configure ip igmp
snooping disable-nve-static-router-port globally or per vlan to learn snooping states dynamically.
• VXLAN with Ingress replication using control plane is not supported.
• You can send Layer 3 end-to-end traffic with a maximum packet size of 9192 between VSI ports in
different VNI segments.
• Layer 3 traffic will be dropped if the MTU packet size is greater than 9192.
• Inner VLAN class of service (CoS) needs to be propagated from ingress to egress in VXLAN. At the
encap side, CoS value will be copied to outer differentiated services code point (DSCP) and on the decap
side DSCP QOS will be copied back to egress VLAN COS.
• vPC peer-link can carry both global VLAN and bridge-domains that are having VXLAN enabled.
• MLD snooping on bridge-domain with VXLAN is not supported.
• ACL and QoS on a VTEP tunnel are not supported.
• Layer 3 VXLAN gateways are supported.
• PVLAN with VXLAN is not supported.
• Extending VLAN/VNI with OTV, VPLS, NV-GRE, and Layer 2 LISP when VXLAN is enabled is not
supported due to hardware restrictions in the F3 ASIC.
• Extending Layer 2 MPLS network directly with VXLAN is not supported. Layer 2 MPLS has to be
terminated and connected as a CE port for VXLAN extension due to forwarding restrictions.
• Interop with IPGRE is not supported.
• Interop with Layer 3 LISP is not supported.
• F3 SPAN feature does not support spanning L3 egress multicast packets.
• Netflow is not supported on VTEP interface.
• Netflow on VXLAN-enabled bridge domains is not supported.
• FEX ports are not supported as edge ports for VXLAN enabled bridge-domains.
• Extending global VLANs using VXLAN is not supported.
• BPDUs are not sent over the VTEP tunnel.
• Layer 3 Multicast - SSM in the core is not supported.
• MIB/XML support for VXLAN related changes is not supported.
• VXLAN encapsulation of an outer header with an IPv6 header is not supported.
• In VXLAN vPC Setup, RP should be configured on L3 core network. Direct connectivity between L2
gateway and vPC L3 gateway without L3 core in between is not supported.
• Any Source Multicast (ASM) is supported. Bidirectional PIM is supported on a single, non-vPC leaf
switch.
• Physical port vPC for Vn-segment Service Instance (VSI) is not supported.
• The following Interface NVE counters are supported.
Cisco Nexus 7000 Series NX-OS VXLAN Configuration Guide
18
◦ Unicast and Multicast packets and bytes transmitted
Configuring VXLAN Flood and Learn