Stacking Lag; Supported Stacking Topologies - Dell S4820T Configuration Manual

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Stacking LAG

When multiple links are used between stack units, Dell Networking OS automatically bundles them in a
stacking LAG to provide aggregated throughput and redundancy.
The stacking LAG is established automatically and transparently by Dell Networking OS (without user
configuration) after peering is detected and behaves as follows:
• The stacking LAG dynamically aggregates; it can lose link members or gain new links.
• Shortest path selection inside the stack: If multiple paths exist between two units in the stack, the
shortest path is used.

Supported Stacking Topologies

The device supports stacking in a ring or a daisy chain topology.
Dell Networking recommends the ring topology when stacking the switches to provide redundant
connectivity.
Figure 117.
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Stacking