Dell PowerSwitch S4128F-ON EMC SmartFabric OS10 User Guide Release 10.5.1 - Page 985
BGP EVPN in VLT domain, Example: VXLAN with BGP EVPN
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Both VTEPs in a VLT pair advertise identical EVPN routes, which provides redundancy if one of the VTEP peers fails. To set up redundant EVPN route advertisement, configure the same EVI, RD, and RT values for each VNI on both VTEPs in a VLT pair, including: ● In auto-EVI mode, this identical configuration is automatically ensured if the VNID-to-VNI association is the same on both VTEP peers. ● In manual EVI mode, you must configure the same EVI-to-VNID association on both VTEP peers. ● In manual EVI mode, you must configure the same RD and RT values on both VTEP peers. In an EVPN configuration, increase the VLT delay-restore timer to allow for BGP EVPN adjacency to establish and for the remote MAC and neighbor entries to download by EVPN and install in the dataplane. The VLT delay-restore determines the amount of time the VLT LAGs are kept operationally down at bootup to allow the dataplane to set up and forward traffic, resulting in minimal traffic loss as the VLT peer node boots up and joins the VLT domain. For a sample BGP EVPN VLT configuration, see Example: VXLAN with BGP EVPN. Figure 14. BGP EVPN in VLT domain VXLAN 985
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