# VXLAN

`ryu.lib.packet.vxlan.``vni_from_bin`(buf)

  Converts binary representation VNI to integer.

  Parameters: | buf -- binary representation of VNI.
  Returns: | VNI integer.

`ryu.lib.packet.vxlan.``vni_to_bin`(vni)

  Converts integer VNI to binary representation.

  Parameters: | vni -- integer of VNI
  Returns: | binary representation of VNI.

class `ryu.lib.packet.vxlan.``vxlan`(vni)

  VXLAN (RFC 7348) header encoder/decoder class.

  An instance has the following attributes at least. Most of them are same to the on-wire counterparts but in host byte order. __init__ takes the corresponding args in this order.

  Attribute | Description
  --- | ---
  vni | VXLAN Network Identifier

  classmethod `parser`(buf)

    Decode a protocol header.

    This method is used only when decoding a packet.

    Decode a protocol header at offset 0 in bytearray buf. Returns the following three objects.

    - An object to describe the decoded header.
    - A packet_base.PacketBase subclass appropriate for the rest of the packet. None when the rest of the packet should be considered as raw payload.
    - The rest of packet.
  `serialize`(payload, prev)

    Encode a protocol header.

    This method is used only when encoding a packet.

    Encode a protocol header. Returns a bytearray which contains the header.

    payload is the rest of the packet which will immediately follow this header.

    prev is a packet_base.PacketBase subclass for the outer protocol header. prev is None if the current header is the outer-most. For example, prev is ipv4 or ipv6 for tcp.serialize.