VxLAN can be thought of a stateless tunneling scheme to overlay Layer 2 networks on top of Layer 3 networks. The endpoints of the tunnel (which originates and/or terminates VxLAN tunnels) are called VTEP and could be located either on the hypervisor on a physical switch/router or physical server implemented in software or hardware. They are also interchangeably referred to as Network Virtualization Endpoint (NVE).A VxLAN Segment ID is an identifier for the Layer 2 overlay network over which VMs communicate.An entity which forwards traffic between VxLAN and L2/VLAN environments. The gateway strips out the VXLAN header and forwards to a physical port based on the destination MAC address of the inner Ethernet frame.Remote switch or hypervisor VTEP reachable via core portRefers to underlay group address associated with a VNI. Multiple VNIs can share a DGVxLAN BUD-node scenarios are not supported. Device cannot be a transit and VTEP gateway at the same time.
There are other platforms like ASR9K, ASR 1K, CSR 1K, N1Kv.
Merchant Silicon significant limitation is its inability to route the frames based on the DMAC of the inner frame after stripping the VxLAN header. This means that the VxLAN gateway based on single chip in merchant silicon cannot easily support routing in the VxLAN networks.This will be required when a same customer/tenant has multiple segments and wishes to route across them.
Label Server a Bare Metal server connecting on a VLAN network
1. DataCenter Infrastructure - VXLAN and
Nexus 7K Architecture
Solutions Architect SLED North East