Reference Guide

298 | Data Center Bridging (DCB)
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DCBx Example
Figure 13-4 shows how DCBx is used. 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 S5000 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 S5000
, PFC and ETS use DCBx to exchange link-level configuration with DCBx peer devices.
Figure 13-4. DCBx Sample Topology