Dell PowerSwitch S4128F-ON OS10 Enterprise Edition User Guide Release 10.4.3.0 - Page 1050

3 Repeat the steps on the VLT peer. Configure VLT LAG - peer 1 OS10(config)# interface port-channel 10 OS10(conf-if-po-10)# vlt-port-channel 1 Configure VLT LAG - peer 2 OS10(config)# interface port-channel 20 OS10(conf-if-po-20)# vlt-port-channel 1 VLT unicast routing VLT unicast routing enables optimized routing where packets destined for the L3 endpoint of the VLT peer are locally routed. IPv4 and IPv6 support VLT unicast routing. To enable VLT unicast routing, both VLT peers must be in L3 mode. The VLAN configuration must be symmetrical on both peers. You cannot configure the same VLAN as L2 on one node and as L3 on the other node. 1 Enter the VLT domain ID in CONFIGURATION mode, from 1 to 1024. vlt-domain domain-id 2 Enable peer-routing in VLT-DOMAIN mode. peer-routing 3 Repeat the steps on the VLT peer. Configure unicast routing - peer 1 OS10(config)# vlt-domain 1 OS10(conf-vlt-1)# peer-routing View unicast routing - peer 1 do show running-configuration vlt ! vlt-domain 1 discovery-interface ethernet1/1/3-1/1/6,1/1/53:1-1/1/53:4,1/1/54:1-1/1/54:4 peer-routing Configure unicast routing - peer 2 OS10(config)# vlt-domain 1 OS10(conf-vlt-1)# peer-routing View unicast routing - peer 2 do show running-configuration vlt ! vlt-domain 1 discovery-interface ethernet1/1/3-1/1/6,1/1/53:1-1/1/53:4,1/1/54:1-1/1/54:4 peer-routing VRRP Optimized Forwarding To enable optimized L3 forwarding over VLT, use VRRP Active-Active mode. By default, VRRP Active-Active mode is enabled on the VLAN interfaces. In this mode, each peer locally forwards L3 traffic, resulting in reduced traffic flow over the VLTi. Configure the same static and dynamic L3 routing on each peer to ensure that L3 reachability and routing tables are the same on both peers. 1 Enable VRRP Active-Active mode in VLAN-INTERFACE mode. vrrp mode active-active 2 Configure VRRP on the L3 VLAN that spans both peers. 1050 Virtual Link Trunking