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VXLAN was the first MAC-over-IP overlay virtual networking technology that could be used to implement large-scale layer-2 multi-tenant virtual networking solutions within the VMware’s vSphere ecosystem.
Since its introduction in 2011 various VXLAN implementations introduced scalable control plane, hardware gateways, and standardized scale-out architectures based on BGP MPLS Ethernet VPN (EVPN).
Version 2.0 of VXLAN Technical Deep Dive webinar describes:
The webinar covers the following topics:
This section describes the VXLAN architectural model, packet formats and forwarding principles, including the use of IP multicast to emulate layer-2 flooding.
The design guidelines presented in this section will help you integrate VXLAN-based virtual networking solutions with large-scale IP-based data center networks.
Initial VXLAN implementations used IP multicast to establish MAC-to-VTEP mappings in hypervisor virtual switches. This section describes the technical details of multicast-based VXLAN and two hypervisor-based implementations: Cisco’s Nexus 1000V and native vSphere 5.1 implementation included in vCloud Networking and Security (vCNS) group of products.
Virtualization vendors quickly realized that they cannot sell a solution that depends so heavily on IP multicast, and started implementing proprietary control-plane solutions that replaced multicast-based flooding with hypervisor-based packet replication, and dynamic MAC learning with control-plane information gathering.
This section describes three typical proprietary control-plane architectures: Cisco Nexus 1000V, VMware NSX for Multiple Hypervisors and VMware NSX for vSphere.
This section describes EVPN-based approaches that allow network designers to build scale-out VXLAN-based architectures. The implementations mentioned in this section include Cisco Nexus 1000V, Nuage VSP and Juniper Contrail.
VXLAN segments are completely isolated from the rest of the network. You need gateway functionality if you want to link a VXLAN segment with a traditional VLAN or insert network services (routing, firewalling or load balancing) between a VXLAN segment and the rest of the network.
This section lists most common gateway solutions, from VM-based products (example: vShield Edge or vASA) to hardware gateways (Arista 7150, Cisco Nexus 9300, Brocade VDX 6740), and describes various design scenarios that you can use to implement large-scale multi-tenant private- or public cloud solutions.
One could use Arista’s VXLAN implementation to build large-scale layer-2 data center fabrics. VXLAN is also a fundamental building block of Cisco’s ACI architecture. This section will describe the approaches network hardware vendors use to build overlay data center fabrics with their hardware VXLAN gateways.
If part of your daily job includes VMware network connectivity, OpenStack or IaaS infrastructure, be it on the server or networking side, you simply have to attend this webinar, regardless of whether you’re a network architect, network designer, or an implementation guru.
This webinar assumes familiarity with virtual networking concepts and VMware networking solutions, and basic understanding of IP routing and IP multicast. Watching Cloud Networking and Overlay Virtual Networking before attending this webinar will also help you better understand the technical details.