26.1.3 VXLAN encapsulation

VXLAN tunneling encapsulates up to 54 bytes of headers, consisting of Ethernet, IP,UDP, and VXLAN, into frames received on VXLAN Access.

When VXLAN encapsulation is used, the destination UDP port number in UDP headers is fixed. The source UDP port number is determined by Hash computation using the information when a frame is received. The data used to calculate Hash depends on the type of frame received on VXLAN Access. The following shows the data used to calculate Hash for each frame type.

For IP packets

• Receive VLAN ID

• Destination IP address

• Source IP address

• Destination TCP/UDP port number

• Source TCP/UDP port number

• Receive port number or receive channel group number

For non IP packets

• Destination MAC address

• Source MAC address

• Receive VLAN ID

• Ethernet type

• Receive port number or receive channel group number

If the communication path of VXLAN tunneling is redundant with link aggregation and load balancing, the destination is sorted by the frame data after VXLAN encapsulation.

The distribution in link aggregation corresponds to Layer 2 forwarding. For details, see section 21.1.5, Port Allocation When Transmitting Frames.

For details about load balancing, see "Configuration Guide Vol.3" "8.4.2 Load Balancing Specifications".