Reference Guide

Figure 141. VLT on Core Switches
Multiple VLT
A multiple VLT (mVLT) configuration allows two different VLT domains connected by a standard LACP
LAG to form a loop-free Layer 2 topology in the aggregation layer.
This configuration supports a maximum of four (4) units, increasing the number of available ports and
allowing for dual redundancy of the VLT. The following illustration shows how the core/aggregation port
density in the Layer 2 topology is increased using mVLT. For inter-VLAN routing and other Layer 3
routing, a separate Layer 3 router is required.
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Virtual Link Trunking (VLT)