A Layer 2 VNI is a common VNI used for intra-subnet VXLAN packet forwarding, whereas a Layer 3 VNI is bound to a VPN instance for inter-subnet VXLAN packet forwarding. VXLAN Gateway Similar to in VLANs, hosts with different VNIs or those on VXLAN and non-VXLAN networks should be unable...
Figure 1-3Traditional three-layer network architecture limiting the dynamic VM migration scope To enable smooth VM migration in a large scope or even across regions, all involved servers must be deployed on a large Layer 2 domain. How Does VXLAN Meet Network Requirements During Dynamic VM Migratio...
It's like giving virtual machines in the Layer 2 network the wings of routing, allowing them to break free from the structural limitations of Layer 2 and Layer 3 networks. Why is VXLAN needed? This is closely related to the virtualization trend on the server side of data centers. On ...
To solve this problem, Virtual eXtensible Local Area Network (VXLAN) was introduced. Defined in RFC, VXLAN is a Network Virtualization over Layer 3 (NVO3) technology that uses MAC-in-User Datagram Protocol (MAC-in-UDP) encapsulation. VXLAN overcomes the preceding disadvantages of VLAN. VXLAN us...
Example for Configuring IPv4 Layer 3 Multicast Over VXLAN When the Receiver Is Dual-Homed to VXLAN Through M-LAG in the Distributed Active-Active Gateway Scenario Networking Requirements On an IPv4 network shown in Figure 15-17, Leaf 1, Leaf 2, and Leaf 3 are configured with distributed ...
Layer 3 Routing, including policy-based and ECMP routing Layer 4 Load Balancing NAT GENEVE and VxLAN encapsulation Distributed control plane features include: ARP/ND Bidirectional Forwarding Detection (BFD) Control Plane Protection (CoPP) DHCP
A VXLAN tunnel endpoint (VTEP) is a VXLAN-capable device that encapsulates and de-encapsulates packets. In the physical network, a switch typically functions as a layer 2 or layer 3 VXLAN gateway and is considered a hardware VTEP. The virtual network equivalents are known as software VTEPs, ...
Learn that a VIP is available on each MUX, even if the MUXes are on different subnets in a Layer 3 network. Spread the load for each VIP across all available MUXes using Equal Cost Multi-Path (ECMP) routing. Automatically detect a MUX failure or rem...
You can theoretically create as many as 16 million VXLANs in an administrative domain, as opposed to 4094 VLANs. VM can migrate between servers that exist in separate Layer 2 domains by tunneling the traffic over Layer 3 networks. So you can dynamically allocate resources within or between dat...
Overlay network protocols include Virtual Extensible LAN (VXLAN),Generic Routing Encapsulation,Network Virtualization using GRE, Stateless Transport Tunneling and Network Virtualization Overlays. Most network overlays work at Layer 3 in the Open Systems Interconnection (OSI) model, handling all traffic throug...