Dell Configuration Guide for the S4048–ON System 9.14.2.4

To configure VLT, use the following procedure.

Prerequisites:

Before you begin, make sure that both VLT peer switches are running the same Dell EMC Networking OS version and are configured for RSTP as described in the RSTP Configuration section. For VRRP operation, ensure that you configure VRRP groups and L3 routing on each VLT peer as described in VLT and VRRP interoperability in the Configuration Notes section. To configure VLT and create a VLT domain in which two switches are physically connected and treated as a single port channel by access devices, configure the following settings on each VLT peer device.

1. Configure the VLT interconnect for the VLT domain. The primary and secondary switch roles in the VLT domain are automatically assigned 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 EMC recommends using 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).