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In real-world networks, it is common to have multiple transport and EVPN domains distributed across different geographic locations. This year, we successfully recreated such a scenario in our test environment. Our topology consists of five interconnected domains: EVPN-SR-MPLS, EVPN-VXLAN, and IPVPNv4. The two VXLAN domains demonstrate VXLAN stitching. The two SR-MPLS domains interconnected via a VXLAN domain showcase the EVPN-SR-MPLS and EVPN-VXLAN Gateway features. The IPVPNv4 domain demonstrates EVPN IPVPN interworking. This multidomain topology covers several common scenarios in real-world use cases. |
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In our test, we enabled Interconnect Ethernet Segment (I-ES) between EVPN SR-MPLS and EVPN VXLAN to facilitate overlay interworking. To prevent route loops, Domain Path (D-PATH) was also activated between these three domains. Additionally, the Unknown MAC Route (UMR) feature was configured on the EVPN SR-MPLS and EVPN VXLAN gateway, allowing the handling of unknown unicast traffic by setting the destination MAC address to all 0 and forwarding such packets to the gateway. |
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Finally, we generated full-mesh unicast traffic using Keysight IxNetwork across all domains, evaluating both routing and bridging scenarios. Every packet was delivered end-to-end without loss, confirming the successful operation of the complex multidomain interworking setup. |
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[[~[~[Figure 49: Multi Domain~>~>image:VXLAN-1.76.png~|~|alt="Figure 49"~]~]>>attach:VXLAN-1.76.png||target="_blank"]] |
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|[[< Previous>>doc:Optimized Inter-Subnet Multicast (OISM) with EVPN to EVPN Gateway (EEG)]]|[[Next ~>>>doc:Main.EANTC Transport & Cloud Networks Interop Test Report 2026.Orchestration and Automation.WebHome]] |
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