Dell PowerSwitch S4112F-ON EMC SmartFabric OS10 User Guide Release 10.5.1 - Page 1085
Example: Migrating from Asymmetric IRB to Symmetric IRB
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OS10(config-router-neighbor)# no shutdown OS10(config-router-neighbor)# exit 12. Configure IP routing in the overlay network. ● Create a tenant VRF. OS10(config)# ip vrf tenant1 OS10(conf-vrf)# exit ● Configure an anycast gateway MAC address. OS10(config)# ip virtual-router mac-address 00:01:01:01:01:01 ● Configure routing on the virtual network. OS10(config)# interface virtual-network 20000 OS10(conf-if-vn-20000)# ip vrf forwarding tenant1 OS10(conf-if-vn-20000)# ip address 10.2.0.234/16 OS10(conf-if-vn-20000)# ip virtual-router address 10.2.0.100 OS10(conf-if-vn-20000)# no shutdown OS10(conf-if-vn-20000)# exit 13. Configure symmetric IRB. In EVPN mode, configure the router MAC address that is used by remote VTEPs as the destination address in VXLAN encapsulated packets that are sent to the switch. Configure a dedicated VXLAN VNI for symmetric IRB for each tenant VRF. OS10(config)# evpn OS10(config-evpn)# router-mac 00:01:02:03:04:06 OS10(config-evpn)# vrf tenant1 OS10(config-evpn-vrf-tenant1)# vni 3000 OS10(config-evpn-vrf-tenant1)# route-target auto OS10(config-evpn-vrf-tenant1)# exit OS10(config-evpn)# exit 14. Configure an externally connected VLAN. OS10(conf)# interface vlan 200 OS10(conf-if-vlan)# ip vrf forwarding tenant1 OS10(conf-if-vlan)# ip address 10.10.0.2/16 OS10(conf-if-vlan)# no shutdown OS10(conf-if-vlan)# exit OS10(conf)# interface ethernet 1/1/7 OS10(conf-if-eth1/1/7)# switchport mode trunk OS10(conf-if-eth1/1/7)# switchport trunk allowed vlan 200 15. Configure advertisement of the connected networks through EVPN Type-5 routes. OS10(config)# evpn OS10(config-evpn)# vrf tenant1 OS10(config-evpn-vrf-tenant1)# advertise ipv4 connected OS10(config-evpn-vrf-tenant1)# exit Example: Migrating from Asymmetric IRB to Symmetric IRB Until Release 10.5.0, OS10 provided support only for the Asymmetric IRB mode. Starting from Release 10.5.1, OS10 supports the Symmetric IRB mode. Symmetric IRB mode efficiently uses next hop tables in the NPU. If there are no local hosts, Symmetric IRB mode does not require creation of destination VNI in the local VTEP. You can migrate your network from Asymmetric IRB mode to Symmetric IRB mode. For a seamless migration with less or no downtime in the VLT environment, perform the following steps: NOTE: ● Before you start this migration, all leaf nodes acting as VTEPs in the Clos network must be upgraded to 10.5.1.x. ● If there are overlay hosts in default VRF, migration to Symmetric IRB mode is not supported because Symmetric IRB mode cannot be used in default VRF. VXLAN 1085
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