Just as TCP/IP is a suite composed of the TCP and IP protocols, EVPN and VXLAN are separate components in themselves. EVPN serves as the control plane, using BPG extensions to transmit MAC address information. By moving the MAC learning process to the control plane, it avoids the flooding that is characteristic of traditional L2 networks in which the MAC tables must be constantly updated. It serves as a unifying overlay that accommodates resources from different data centers in much the same way that application containers float across virtual host servers.
VXLAN is an industry standard virtualization overlay protocol that expands the L2 network address space from 4,000 separate identities to 16 million. It is vendor neutral and switches that support it encapsulate L2 frames into L3 packets. VXLAN networks utilize spine-leaf switch architectures. Spine layer switches are used to pass traffic through leaf switches and are not VXLAN aware. On the other hand, leaf layer switches perform the VXLAN functionality and interconnect the spine to the array of endpoints. This dual layer topology is better suited for east-west traffic flows and provides increased redundancy as every leaf switch connects to every spine switch. It also negates the need for the Spanning Tree Protocol (STP) configuration while still preventing loops.
A network overlay approach is essential in the era of computer mobility. This sense of mobility isn’t just present amongst client devices, but applications as well. Today’s applications are deployed onto virtual machines or containers that can stretch across multiple locations. This necessitates the need for a seamless mobility model that is flexible enough to continually support communications between application endpoints. This is regardless of where they are at the time. Pertinent advantages of EVPN/VXLAN/IP include:
Planning a migration to a large enterprise environment that utilizes EVPN-VXLAN/IP is a mammoth endeavor and implementing one for the first time instills a substantial learning curve. The good news is that Juniper Apstra Automated Data Center Deployment Service can make it easier regardless of your experience with network overlays. The service gives your IT team access to data center deployment experts who employ proven, best practice implementation methodologies and tools. The result is faster completion times, reduced deployment risks, and reduced costs. The Juniper Apstra service supports multiple migration scenarios:
Harnessing this level of expertise in your next project also ensures that your future network environment remains aligned with assigned priorities such as minimal downtime and secure but efficient traffic flows.
In the same way that EVPN/VXLAN/IP segments and simplifies even the largest of networks, Juniper Apstra breaks down your next fabric data center project into distinct phases that make help ensure that your project is completed in an orderly fashion. Because Juniper Apstra is an intent-based networking solution, your next data center is sure to align with the business objectives of your organization. Learn how Juniper and EVPN/VXLAN/IP can add scalability, simplicity, and security to your next data center fabric.
Next Steps: Whether you are responding to evolving workloads and performance needs or changing scalability and resiliency requirements, chances are your enterprise will undergo a data center migration at some point. Download our white paper, Simplifying Your Data Center Deployment And Management Strategy and learn: