Lenovo Flex System EN4023 Manuel du produit - Page 20
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Figure 8. EN4023 connectivity topology – Direct connection without ToR switches
Such a topology allows network administrators to connect to the upstream network without the need for a Top of
Rack (ToR) switch, allowing for a lower-cost solution and freeing up valuable rack space.
Virtual Link Aggregation
The connectivity topology, which can be used with the EN4023 switches and the Brocade MLX upstream
network devices, is shown in the following figure.
Figure 9. EN4023 connectivity topology - Virtual Link Aggregation
In this access-layer topology, aggregation is split between two physical switches, and each EN4023 is
connected to both ToR switches through static or Link Aggregation Control Protocol (LACP)-aggregated links.
Compute Node's NICs are configured in an active/active NIC teaming. This topology can be used to insert
Lenovo Flex System EN4023 10Gb Scalable Switch
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