Dell PowerSwitch S5212F-ON EMC SmartFabric OS10 User Guide Release 10.5.0 - Page 524

VTEP1(conf-vrf)# update-source-ip loopback 3 VTEP1(conf-vrf)# exit 3. Leak the server-connected networks to the tenant VRF to which the client is connected. VTEP1(config)# ip route vrf GREEN 20.1.1.0/24 interface virtual-network 20 VTEP1(config)# ip route vrf GREEN 52.1.1.1/32 interface loopback 3 4. Leak the client-connected networks to the tenant VRF to which the server is connected. VTEP1(config)# ip route vrf RED 10.1.1.0/24 interface virtual-network 10 VTEP1(config)# ip route vrf RED 51.1.1.1/32 interface loopback 2 VTEP2 1. Configure IP helper address specifying the DHCP server ip address in the client-connected virtual networks with the client-connected VRF name. For IPv6 DHCP helper address, specify the server VRF in the helper-address command. VTEP2(config)# interface virtual-network 10 VTEP2(conf-if-vn-10)# ip helper-address 20.1.1.100 vrf GREEN 2. Configure loopback interfaces. Assign the loopback interfaces as source interfaces for the VRF. VTEP2(config)# interface loopback 2 VTEP2(conf-if-lo-2)# ip vrf forwarding GREEN VTEP2(conf-if-lo-2)# ip address 51.1.1.2/32 VTEP2(conf-if-lo-2)# exit VTEP2(config)# interface loopback 3 VTEP2(conf-if-lo-3)# ip vrf forwarding RED VTEP2(conf-if-lo-3)# ip address 52.1.1.2/32 VTEP2(conf-if-lo-3)# exit VTEP2(config)# ip vrf GREEN VTEP2(conf-vrf)# update-source-ip loopback 2 VTEP2(conf-vrf)# exit VTEP2(config)# ip vrf RED VTEP2(conf-vrf)# update-source-ip loopback 3 VTEP2(conf-vrf)# exit 3. Leak the server-connected networks to the tenant VRF to which the client is connected. VTEP2(config)# ip route vrf GREEN 20.1.1.0/24 interface virtual-network 20 VTEP2(config)# ip route vrf GREEN 52.1.1.2/32 interface loopback 3 4. Leak the client-connected networks to the tenant VRF to which the server is connected. VTEP2(config)# ip route vrf RED 10.1.1.0/24 interface virtual-network 10 VTEP2(config)# ip route vrf RED 51.1.1.2/32 interface loopback 2 Example: Route leaking between VRFs with symmetric IRB routing With symmetric IRB routing, the virtual networks to which the hosts are connected might be disjoint or stretched virtual networks. A disjoint virtual network does not span across VTEPs whereas a stretched virtual network spans across VTEPs. In this example, the virtual networks are disjoint. • VTEP1 has virtual network 10 configured in tenant VRF GREEN. • VTEP2 has virtual network 20 configured in tenant VRF RED. • The client is connected to virtual network 10 in VTEP1. • The server is connected to virtual network 20 in VTEP2. In this case, request from the client does not reach the server as they are part of different tenant VRFs. Connected route leaking cannot be configured in VTEP1 because the server-connected network is not present in VTEP1. The server-connected network must be leaked to the client VRF in VTEP2. This leaked route must be advertised as EVPN type-5 route in the client VRF to VTEP1. 524 Layer 3