Components Of Vxlan Frame Format; Configuring And Controlling Vxlan From The Nvp Controller Gui - Dell S6100 Configuration Manual

Components of VXLAN Frame Format

Some of the important fields of the VXLAN frame format are described below:
Outer Ethernet The Outer Ethernet Header consists of the following components:
Header:
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Outer IP Header: The Outer IP Header consists of the following components:
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Outer UDP Header: The Outer UDP Header consists of the following components:
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VXLAN Header :
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Frame Check Note that the original Ethernet frame's FCS is not included, but new FCS is generated on the outer Ethernet
Sequence (FCS): frame.
Configuring and Controlling VXLAN from the NVP
Controller GUI
You can configure and control VXLAN from the NVP controller GUI, by adding a hardware device to NSX and authenticating the device.
1 Generate a certificate in your system and add it to the NSX before adding a hardware device for authentication.
To generate a certificate, use the following command:
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crypto cert generate self-signed cert-file flash://vtep-cert.pem key-file flash://vtep-
privkey.pem
Destination Address: Generally, it is a first hop router's MAC address when the VTEP is on a different address.
Source Address : It is the source MAC address of the router that routes the packet.
VLAN: It is optional in a VXLAN implementation and will be designated by an ethertype of 0×8100 and has an
associated VLAN ID tag.
Ethertype: It is set to 0×0800 because the payload packet is an IPv4 packet. The initial VXLAN draft does not
include an IPv6 implementation, but it is planned for the next draft.
Protocol: It is set to 0×11 to indicate that the frame contains a UDP packet .
Source IP: It is the IP address of originating VTEP.
Destination IP: : It is the IP address of target VTEP.
Source Port: Entropy of the inner frame. The entropy could be based on the Inner L2 header or Inner L3
header.
VXLAN Port : IANA-assigned VXLAN Port (4789).
UDP Checksum: The UDP checksum field is transmitted as zero. When a packet is received with a UDP
checksum of zero, it is accepted for decapsulation.
VXLAN Flags : Reserved bits set to zero except bit 3, the first bit, which is set to 1 for a valid VNI
VNI: The 24-bit field that is the VXLAN Network Identifier
Reserved: A set of fields, 24 bits and 8 bits, that are reserved and set to zero .
Virtual Extensible LAN (VXLAN) 997