Dcbx Prerequisites And Restrictions; Configuring Dcbx - Dell S4048T Configuration Manual

On the S4048, PFC and ETS use DCBx to exchange link-level configuration with DCBx peer devices.
Figure 35. DCBx Sample Topology

DCBx Prerequisites and Restrictions

The following prerequisites and restrictions apply when you configure DCBx operation on a port:
• For DCBx, on a port interface, enable LLDP in both Send (TX) and Receive (RX) mode (the protocol
lldp mode command; refer to the example in
the Link Layer Discovery Protocol (LLDP)
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 (NIV).

Configuring DCBx

To configure DCBx, follow these steps.
For DCBx, to advertise DCBx TLVs to peers, enable LLDP. For more information, refer to
Link Layer Discovery Protocol
Configure DCBx operation at the interface level on a switch or globally on the switch. To configure the S4810
system for DCBx operation in a data center network, you must:
1 Configure ToR- and FCF-facing interfaces as auto-upstream ports.
2 Configure server-facing interfaces as auto-downstream ports.
3 Configure a port to operate in a configuration-source role.
CONFIGURATION versus INTERFACE Configurations
chapter). If multiple DCBx peer ports are detected on a local
(LLDP).
Data Center Bridging (DCB)
in
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