Users Guide

DCBx Example
The following figure shows how DCBx is used on an Aggregator installed in a Dell PowerEdge M I/O
Aggregator chassis in which servers are also installed.
The external 40GbE ports on the base module (ports 33 and 37) of two switches are used for uplinks
configured as DCBx auto-upstream ports. The Aggregator is connected to third-party, top-of-rack (ToR)
switches through 40GbE uplinks. The ToR switches are part of a Fibre Channel storage network.
The internal ports (ports 1-32) connected to the 10GbE backplane are configured as auto-downstream
ports.
On the Aggregator, PFC and ETS use DCBx to exchange link-level configuration with DCBx peer devices.
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Data Center Bridging (DCB)