Dell Force10 MXL Blade Reference Manual page 162

Usage
Information
Related
Commands
dcbx port-role
Syntax
Parameters
Defaults
Command Modes
Command
History
Usage
Information
162 | Data Center Bridging
If you configure PFC on a 40GbE port, count the 40GbE port as four PFC-enabled ports in the
number you enter in the command syntax.
To achieve lossless PFC operation, the PFC port count and queue number used for the reserved buffer
size that is created must be greater than or equal to the buffer size required for PFC-enabled ports and
lossless queues on the switch.
You must reload the stack or a specified stack unit (use the
for the PFC buffer configuration to take effect.
dcb stack-unit all pfc-buffering
pfc-port-count pfc-queues
Configure the DCBX port role used by the interface to exchange DCB information.
dcbx port-role {config-source | auto-downstream | auto-upstream | manual}
To remove DCBX port role, use the
auto-upstream | manual} command.
config-source | Enter the DCBX port role, where:
auto-downstream |
•
auto-upstream |
manual
•
•
•
Manual.
PROTOCOL LLDP
Version 8.3.16.1 Introduced on MXL 10/40GbE Switch IO Module
DCBX requires that you enable LLDP to advertise DCBX TLVs to peers.
Configure DCBX operation at the INTERFACE level on a switch. To verify the DCBX configuration
on a port, use the show interface dcbx detail
Configure the PFC buffer for all switches in the stack.
no dcbx port-role {config-source | auto-downstream |
config-source
: configures the port to serve as the configuration source on the
switch.
auto-upstream
: configures the port to receive a peer configuration. The
configuration source is elected from auto-upstream ports.
auto-downstream
: configures the port to accept the internally propagated
DCB configuration from a configuration source.
manual
: configures the port to operate only on administer-configured DCB
parameters. The port does not accept a DCB configuration received form a
peer or a local configuration source.
command.
reload command in EXEC Privilege mode)
pfc-port