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Virtual Extensible LAN (VXLAN) is a network virtualization technology that attempts to ameliorate the scalability issues connected with big cloud computing installations. It uses a VLAN- to encapsulate MAC-based OSI layer 2 Ethernet frames using 4789 as the default IANA-assigned destination UDP port number.[1]
VXLAN is a development of efforts to standardize on an overlay encapsulation protocol. Scalability increases up to 16 million rational networks and allows for layer 2 adjacency. Multicast or unicast with HER (Head End Replication)[2] can be used to flood BUM (unknown destination address broadcast,, multicast) traffic.
The VXLAN specification was initially created by VMware, Arista Networks and Cisco.[3][4] Other backers of the VXLAN technology contain Huawei[5], Broadcom, Citrix, Pica8, Cumulus Networks, Dell, Mellanox[6] OpenBSD,[7] Red Hat[8] and Juniper Networks.
Virtual Extensible LAN (VXLAN) is a network virtualization technology that attempts to ameliorate the scalability issues connected with big cloud computing installations. It uses a VLAN- to encapsulate MAC-based OSI layer 2 Ethernet frames using 4789 as the default IANA-assigned destination UDP port number.[1]
VXLAN is a development of efforts to standardize on an overlay encapsulation protocol. Scalability increases up to 16 million rational networks and allows for layer 2 adjacency. Multicast or unicast with HER (Head End Replication)[2] can be used to flood BUM (unknown destination address broadcast,, multicast) traffic.
The VXLAN specification was initially created by VMware, Arista Networks and Cisco.[3][4] Other backers of the VXLAN technology contain Huawei[5], Broadcom, Citrix, Pica8, Cumulus Networks, Dell, Mellanox[6] OpenBSD,[7] Red Hat[8] and Juniper Networks.