Dell PowerSwitch S5212F-ON EMC SmartFabric OS10 User Guide Release 10.5.1 - Page 1087

2. Spines would now send the overlay traffic destined to VLT domain 1 (Rack1) only to Leaf-2. 3. Configure Symmetric IRB mode in Leaf-2. Leaf-2 configuration a. Configure router-mac. Leaf-2(config)# evpn Leaf-2(config-evpn)# router-mac 02:10:10:10:10:10 b. Configure IP VRF with L3 VNI. Leaf-2(config-evpn)# vrf BLUE Leaf-2(config-evpn-vrf-VRF001)# vni 65001 c. Configure RT (auto or manual) and RD (optional, default is auto). Leaf-2(config-evpn-vrf-BLUE)# route-target auto d. Advertise IPv4 and IPv6 connected routes. Leaf-2(config-evpn-vrf-BLUE)# advertise ipv4 connected Leaf-2(config-evpn-vrf-BLUE)# advertise ipv6 connected 4. Leaf-2 is changed to Symmetric IRB mode. VTEPs in other racks could be using Symmetric IRB or Asymmetric IRB based on its own local configuration. Irrespective of what other remote VTEPs use, Leaf-2 could now handle VXLAN encapsulated traffic from both symmetric and asymmetric modes. 5. Configure Symmetric IRB in Leaf-1. Leaf-1 configuration a. Configure router-mac. Leaf-1(config)# evpn Leaf-1(config-evpn)# router-mac 02:10:10:10:10:10 b. Configure IP VRF with L3 VNI. Leaf-1(config-evpn)# vrf BLUE Leaf-1(config-evpn-vrf-VRF001)# vni 65001 c. Configure RT (auto or manual) and RD (optional, default is auto). Leaf-1(config-evpn-vrf-BLUE)# route-target auto d. Advertise IPv4 and IPv6 connected routes. Leaf-1(config-evpn-vrf-BLUE)# advertise ipv4 connected Leaf-1(config-evpn-vrf-BLUE)# advertise ipv6 connected 6. Remove the BGP MED configuration in Leaf-1. Spines start sending traffic to Leaf-1 as well. ECMP path from Spines towards Leaf-1 and Leaf-2 is restored. Leaf-1 configuration Leaf-1(config)# router bgp 65100 Leaf-1(config-router-bgp-65100)# neighbor 10.1.1.1 Leaf-1(config-router-neighbor)# address-family ipv4 unicast Leaf-1(config-router-bgp-neighbor-af)# no route-map set_higher_metric out Leaf-1(config-router-bgp-neighbor-af)# exit Leaf-1(config-router-neighbor)# exit Leaf-1(config-router-bgp-65100)# neighbor 10.2.1.1 Leaf-1(config-router-neighbor)# address-family ipv4 unicast Leaf-1(config-router-bgp-neighbor-af)# no route-map set_higher_metric out Leaf-1(config-router-bgp-neighbor-af)# end 7. Rack1 is migrated to use Symmetric IRB. 8. Repeat Steps 1-to-6 on Rack2 and other racks as well. 9. After changing all Racks to Symmetric IRB, you can perform the following optional configuration changes: a. If the L2 VNI (MAC-VRF VNI) does not have local hosts in the VTEPs, you can remove those VNIs on those VTEPs. VXLAN 1087