Configure RSTP on VLT Peers to Prevent Forwarding Loops (VLT Peer 1)Dell_VLTpeer1(conf)#protocol spanning-tree rstpDell_VLTpeer1(conf-rstp)#no disableDell_VLTpeer1(conf-rstp)#bridge-priority 4096Configure RSTP on VLT Peers to Prevent Forwarding Loops (VLT Peer 2)Dell_VLTpeer2(conf)#protocol spanning-tree rstpDell_VLTpeer2(conf-rstp)#no disableDell_VLTpeer2(conf-rstp)#bridge-priority 0Configuring VLTTo configure VLT, use the following procedure.Prerequisites:Before you begin, make sure that both VLT peer switches are running the same Dell Networking OS version and are configured for RSTP asdescribed in the RSTP Configuration section. For VRRP operation, ensure that you configure VRRP groups and L3 routing on each VLTpeer as described in VLT and VRRP interoperability in the Configuration Notes section. To configure VLT and create a VLT domain in whichtwo switches are physically connected and treated as a single port channel by access devices, configure the following settings on each VLTpeer device.1 Configure the VLT interconnect for the VLT domain. The primary and secondary switch roles in the VLT domain are automaticallyassigned after you configure both sides of the VLTi.NOTE: If you use a third-party ToR unit, to avoid potential problems if you reboot the VLT peers, Dell recommendsusing static LAGs on the VLTi between VLT peers.2 Enable VLT and create a VLT domain ID. VLT automatically selects a system MAC address.3 Configure a backup link for the VLT domain.4 (Optional) Manually reconfigure the default VLT settings, such as the MAC address and VLT primary/ secondary roles.5 Connect the peer switches in a VLT domain to an attached access device (switch or server).Configuring a VLT InterconnectTo configure a VLT interconnect, follow these steps.1 Configure the port channel for the VLT interconnect on a VLT switch and enter interface configuration mode.CONFIGURATION modeinterface port-channel id-numberEnter the same port-channel number configured with the peer-link port-channel command as described in Enabling VLT andCreating a VLT Domain.NOTE: To be included in the VLTi, the port channel must be in Default mode (no switchport or VLAN assigned).2 Remove any IP address from the interface if already present.INTERFACE PORT-CHANNEL modeno ip address996 Virtual Link Trunking (VLT)
