Packets DownRange
A data center fabric connects servers, storage, and network devices using a leaf-spine architecture designed for high bandwidth and predictable latency. Learn how packets move through a fabric, why ECMP matters, and how modern data centers support virtualization, cloud, and AI workloads.
Large VLAN domains depend on spanning tree. Every topology change triggers recalculation and temporary forwarding loss. EVPN-VXLAN replaces large Layer 2 domains with routed underlays and distributed MAC learning. Regional ISPs use this to connect data centers, IX edge infrastructure, and broadband aggregation networks without stretching spanning tree across sites VXLAN encapsulates Ethernet frames inside … Read more
VXLAN, standing for Virtual Extensible LAN, offers many applications that cater to the evolving needs of modern networking paradigms. 1. Data Center Interconnectivity VXLAN plays a pivotal role in connecting geographically dispersed data centers. Encapsulating Layer 2 Ethernet frames within Layer 3 UDP packets facilitates seamless communication across disparate data center environments. This empowers businesses … Read more
Ethernet Virtual Private Network (EVPN) is designed to provide scalable and efficient data center interconnectivity. Built upon the foundation of traditional Ethernet, EVPN incorporates the best features of layer 2 and layer 3 protocols to create a flexible and secure network fabric. It offers seamless bridging and routing of traffic across data centers, making it … Read more
Virtual Extensible LAN (VXLAN) has emerged as a game changer in network virtualization. In this blog post, we’ll look closely at VXLAN and explore some of its key benefits. In summary, VXLAN is a potent technology that is altering how businesses view network virtualization. Organizations can virtualize their networks, support extensive networking, improve network security, … Read more
What are some of the various terminology used in VXLAN? VNI/VNID: Virtual Network Identifier or VXLAN Network Identifier Layer2 VNI carried in VXLAN bridged packets. VNI is configured per VLAN. Layer3 VNI carried in VXLAN routed packets across VTEPs. One L3 VNI per tenant (VRF) Note: Tenant, VRF, L3VNI are sometimes used interchangeably VTEP: VXLAN Tunnel … Read more
Video about an introduction to VXLAN and how it compares to traditional vlans and switching
What is VXLAN and how would service providers and WISPs use it in their networks?
OTV(Overlay Transport Virtualization) is a technology that provide layer2 extension capabilities between different data centers.
So as we dive into What is EVPN I want you to know I am approaching this from a service provider standpoint.
As networking trends yo-yo between layer-3 and layer-2 centric different protocols have emerged. Protocols such as Transparent Interconnection of Lots of Links (TRILL), Shortest Path Bridging (SPB), and Virtual Extensible LAN (VXLAN) have emerged to address the need of scalability at Layer2. Cloud scalability, spanning tree bridging issues, and big broadcast networks start to become … Read more
A great article on explaining what OTV is and how it compares to VXLAN http://www.routexp.com/2017/04/vxlan-and-otv-what-is-difference.html?m=1