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Fabric Wizard Overview
Aruba Central allows you to create an overlay fabric by configuring VXLAN Virtual Extensible LAN creates virtual networks overlaid on a physical network. tunnels between Stub Stub is a device persona that supports both static VXLAN tunnels and EVPN VXLAN tunnels. and Edge Edge is a device persona that connects endpoints to the fabric. Switches, and overlay segments for the existing overlay fabrics.
Prerequisites
Before provisioning the overlay fabric using Aruba Central, complete the following prerequisites:
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All Aruba CX switches should be on firmware version 10.10.1020 and above.
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All Switches and the required Aruba devices must be on-boarded on Aruba Central and added to the same UI group.
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The underlay network must be set up before attempting to add any overlay to the network.
- At least two loopback (loopback 0 and loopback 1) interfaces are configured on all devices of the overlay fabric.
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The IP addresses of the loopback interfaces are unique on each device of the overlay fabric except on the VSX Virtual Switching Extension. VSX is a virtualization technology for aggregation/core switches running the AOS-CX operating system. This solution lets the switches present as one virtualized switch in critical areas. pair (VSX pair has at least one loopback interface whose IP address is the same on both primary and secondary).
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At least one instance of OSPF Open Shortest Path First. OSPF is a link-state routing protocol for IP networks. It uses a link-state routing algorithm and falls into the group of interior routing protocols that operates within a single Autonomous System (AS). or BGP Border Gateway Protocol. BGP is a routing protocol for exchanging data and information between different host gateways or autonomous systems on the Internet. should be configured on all devices of the overlay fabric. OSPF or BGP router ID should be the IP address of an existing loopback interface.
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Modifying configurations of the Fabric Fabric is a group of AOS-CX Switches that are part of the BGP-EVPN VXLAN overlay. The overlay fabric is created by configuring VXLAN tunnels between stub and edge Switches. This is in context to Aruba Central NetConductor. Wizard using UI config or Multi-Edit is not supported. This causes the devices going out of sync and / or traffic loss.
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Fabric configuration referenced outside the Fabric context can cause undesirable outcomes such as devices going out of sync when the Fabric configurations are modified by the Fabric Wizard.
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OSPF or BGP must be configured on at least two loopback interfaces (one is used for OSPF and BGP, and the other for the VXLAN source IP).
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If the device has VSX configuration, the following validations must be performed:
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The VSX pair should have minimum one loopback interface with the same IP address (used as VXLAN source IP).
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Keep alive is configured.
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ISL Inter-Switch Link. ISL is a layer 2 interface between two VSX peer switches. link—LAG Link Aggregation Group . A LAG combines a number of physical ports together to make a single high-bandwidth data path. LAGs can connect two switches to provide a higher-bandwidth connection to a public network. interface with member ports is configured.
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For more information on overlay fabric and overlay segment see the following topics: