Virtual Extensible LAN
Virtual Extensible LAN (VXLAN) is a network virtualization technology that attempts to ameliorate the scalability problems associated with large cloud computing deployments. It uses a VLAN-like encapsulation technique to encapsulate MAC-based OSI layer 2 Ethernet frames within layer 4 UDP packets.
VXLAN is an evolution of efforts to standardize on an overlay encapsulation protocol. It increases scalability up to 16 million logical networks and allows for layer 2 adjacency across IP networks. Multicast or unicast with HER (Head-End Replication) is used to flood BUM traffic (Broadcast, Unknown destination address, Multicast).
The VXLAN specification was originally created by VMware, Arista Networks and Cisco. Other backers of the VXLAN technology include Broadcom, Citrix, Pica8, Cumulus Networks, Dell, Mellanox, OpenBSD, Red Hat and Juniper Networks.
The VXLAN was officially documented by the IETF in RFC 7348.
Open vSwitch supports VXLAN overlay networks.
- Steve Herrod (August 30, 2011). "Towards Virtualized Networking for the Cloud". VMware. Retrieved 2013-02-25.
- "Arista Expands Leaf Switch Product Portfolio" (Press release). Arista Networks. 22 October 2014. Retrieved 8 November 2014.
Arista’s updated VXLAN implementation eliminates the need for multicast in the underlay network by using Head End Replication for forwarding broadcast, multicast and unknown unicast traffic
- Timothy Prickett Morgan (30 August 2011). "VMware, Cisco stretch virtual LANs across the heavens". The Register. Retrieved 2013-02-25.
- "Arista and VMware have coauthored a new standard in cloud networking: the Virtual eXtensible LAN (VXLAN)". Retrieved 2013-12-01.
- Timothy Pricket Morgan (April 23, 2013). "Mellanox adds VM-flitting to ConnectX-3 adapters - Going Pro with VXLAN". The Register.
- Reyk Floeter (October 14, 2013). "OpenBSD vxlan implementation". Reyk Floeter.
- M. Mahalingam et al. (February 22, 2013). "VXLAN: A Framework for Overlaying Virtualized Layer 2 Networks over Layer 3 Networks". Retrieved 2013-02-25.
- Mahalingam, Mallik; Dutt, Dinesh G.; et al. (2013-05-08). VXLAN: A Framework for Overlaying Virtualized Layer 2 Networks over Layer 3 Networks. IETF. I-D draft-mahalingam-dutt-dcops-vxlan. https://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan.
- RFC7348 – Virtual eXtensible Local Area Network (VXLAN): A Framework for Overlaying Virtualized Layer 2 Networks over Layer 3 Networks
|This computer networking article is a stub. You can help Wikipedia by expanding it.|