Uplinks to the existing network may be configured as L2 or L3 uplinks. This section describes how to configure L2 uplinks.
The following figure shows how to cable the switches.
When the L2 uplink configuration is complete, Leaf1A and Leaf1B connect with a VLT port channel to a switch pair External-A and External-B. In this example, an existing DNS/NTP server also connects to the external switches using a VLT port channel. In this guide, all VLT port channels use LACP.