Reference Guide

68 | Data Center Bridging (DCB)
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Figure 6-7. DCBX Sample Topology
DCBX Prerequisites and Restrictions
• DCBX requires LLDP in both send (TX) and receive (RX) mode to be enabled on a port interface. If
multiple DCBX peer ports are detected on a local DCBX interface, LLDP is shut down.
• The CIN version of DCBX supports only PFC, ETS, and FCOE; it does not support iSCSI, backward
congestion management (BCN), logical link down (LLD), and network interface virtualization (NIV).