Service Manual

Outer Ethernet
Header:
The Outer Ethernet Header consists of the following components:
• 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.
Outer IP Header: The Outer IP Header consists of the following components:
• 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.
Outer UDP
Header:
The Outer UDP Header consists of the following components:
• 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 Header :
• 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 .
Frame Check
Sequence (FCS):
Note that the original Ethernet frame's FCS is not included, but new FCS is
generated on the outer Ethernet frame.
Configuring and Controlling VXLAN from the NVP
Controller GUI
To configure and control VXLAN from the NVP controller GUI, follow these steps:
1. Create Hypervisor
To create a Hypervisor or server, the required fields are the IP address and SSL certificate of the
server. The following are the snapshots of the user interface for creating a Hypervisor:
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Virtual Extensible LAN (VXLAN)