Dell C9000 Series Networking Configuration Manual page 1119

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The IP MTU configured on the physical interface determines how multiple nested encapsulated packets

are handled in a multipoint receive-only tunnel.

Control-plane packets received on a multipoint receive-only tunnel are destined to the local IP address

and routed to the CPU after decapsulation. A response to these packets from the switch is only possible

if the route to the sender does not pass through a receive-only tunnel.

Multipathing over more than one VLAN interface is not supported on packets routed through the tunnel

IP tunnel interfaces are supported over ECMP paths to the next hop. ECMP paths over IP tunnel

interfaces are supported. ARP and neighbor resolution for the IP tunnel next-hop are supported.

Troubleshooting