VXLAN (Virtual Extensible LAN) enables the extension of a Layer 2 network across a Layer 3 network. Here we describe the static VXLAN configuration across two M-LAG clusters connected by a Layer 3 network.
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Network Diagram
In this example, we assume two M-LAG clusters that are connected to each other via a Layer 3 network. Now, Host A, which is in VLAN100, should be able to communicate with Host B, which is connected to the other site via Layer 2 (in this example, Host B is also in VLAN100 and in the same network as Host A). As the two sites are connected via Layer 3, a direct Layer 2 connection is not possible.
OSPF is used as the routing protocol between the M-LAG clusters. In order to establish a Layer 2 connection between the two hosts, the simplest possible configuration of a VXLAN overlay should be implemented.
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