Production network connection details for this deployment example are shown in the Production network connection details figure below.
Note: Only some equipment in this deployment is shown. Other equipment is connected in the same manner.
When spines are used, each leaf switch has one connection to each spine switch. For this deployment example, connections from leafs to spines are 100 GbE. The fabric interconnect links from the leafs to the DCI switches are 100 GbE in Sites 1 and 2. Connections between DCI Switches, not shown, are 10 GbE in this deployment example.
All ESXi hosts in Sites 1 and 2 have one connection to each leaf. The connections in this example are 25 GbE.
For the VLTi connections, the two QSFP28-DD double density ports (2x 100 GbE interfaces per physical port), available on S5248F-ON switches, are used to create a 400 GbE VLTi. This connection requires QSFP28-DD DAC cables or optics. On switches without QSFP28-DD ports, QSFP28 (100 GbE) or QSFP+ (40 GbE) ports are typically used for VLTi connections. Dell Technologies recommends using at least two physical ports on each leaf switch for the VLTi. This configuration is for redundancy and provides additional bandwidth if there is a failure. The VLTi is used for data traffic only if there is a link failure that requires the VLTi to reach the destination. VLTi connections between the S5212F-ON leafs in Site 2, not shown, are 100 GbE in this deployment example.