The Goal of Network Virtualisation
As an overlay network is the decoupling of the physical topology from the logical topology, to allow connectivity between compute (virtual or physical) and network services (virtual or physical) regardless of where they may reside within the datacenter. This approach delivers an optimal level of flexibility and mobility, so that compute nodes can now be dynamically placed anywhere in the datacenter, removing the traditional L2/L3 boundaries of the physical infrastructure.
The foundation for Arista’s Network Virtualization solutions is VXLAN, an open IETF specification designed to standardize an overlay encapsulation protocol. Arista solutions range from OVSDB and Openstack integration to BGP EVPN in conjunction with EOS CloudVision®, a platform for network-wide workload orchestration and workflow automation.
Key highlights of the solution include:
- Support for IP based Underlay architectures and VXLAN, across broad product portfolio
- Open Control Network (OCN) approach to deliver standards based control plane choices for VXLAN, including BGP EVPN, Multicast or Head End Replication (HER)
- Layer-2 and Layer-3 extension over IP Fabric, to deliver segmentation, multi tenancy, topology independent workload placement for hybrid cloud deployments
- VXLAN+MLAG – Provides an active-active, fully redundant, highly available solution for VTEPs
- VXLAN aware VMtracer for network telemetry across virtual and physical networks
- EOS CloudVision:
- Provides controller agnostic support for network-wide virtual and physical workload orchestration using open APIs such as OVSDB, JSON and OpenStack plugins
- Offers a single point of integration for third party controllers such as VMware NSX, Nuage VSP and Microsoft Windows Server
- Enables plug and play control plane deployments