Data Center Bridging (DCB) | 137
Figure 8-4. DCBX Sample Topology
DCBX Prerequisites and Restrictions
The following prerequisites and restrictions apply when you configure DCBX operation on a port:
• DCBX requires LLDP in both send (TX) and receive (RX) mode to be enabled on a port interface
(protocol lldp mode command; refer to Figure 18-7). If a 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 (LLDF), and network interface virtualization
(VIV).
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