3. Dot1p->Queue Mapping Configuration is retained at the default value.
Default dot1p-queue mapping is,
Dell#show qos dot1p-queue-mapping
Dot1p Priority : 0 1 2 3 4 5 6 7
Queue :2 0 1 3 4 5 6 7
4. Interface Configurations on server connected ports.
a. Enable DCB globally.
Dell(conf)#dcb enable
b. Apply PFC Priority configuration. Configure priorities on which PFC is enabled.
Dell(conf-if-te-1/1)#pfc priority 1,2
DCBx Example
The following figure shows how to use DCBx.
The external 40GbE 40GbE ports on the base module (ports 33 and 37) of two switches are used for
uplinks configured as DCBx auto-upstream ports. The device 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.
Figure 28. 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 CONFIGURATION versus INTERFACE Configurations
Data Center Bridging (DCB) 265