Configuring Dcbx - Lenovo Flex System Fabric CN4093 Application Manual

Configuring DCBX

1. Turn CEE on.
2. Enable desired DCBX configuration negotiation on FCoE ports:
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CN4093 Application Guide for N/OS 8.2
 PFC
DCBX exchanges information regarding whether PFC is enabled or disabled on
the port. The advertise flag is set or reset using the following command:
CN4093(config)# [no] cee port <port alias or number> dcbx pfc advertise
The willing flag is set or reset using the following command:
CN4093(config)# [no] cee port <port alias or number> dcbx pfc willing
ETS

DCBX exchanges information regarding ETS priority groups, including their
802.1p priority members and bandwidth allocation percentages. The
advertise flag is set or reset using the following command:
CN4093(config)# [no] cee port <port alias or number> dcbx ets advertise
The willing flag is set or reset using the following command:
CN4093(config)# [no] cee port <port alias or number> dcbx ets willing
Consider an example consistent Figure 31 on page
FCoE examples in this chapter:
 FCoE is used on port INTA1.
CEE features are also used with LANs on ports INTA2 and EXT1.

 All other ports are disabled or are connected to non‐CEE devices.
In this example, the CN4093 acts as the central point for CEE configuration.
FCoE‐related ports will be configured for advertising CEE capabilities, but not to
accept external configuration. Other LAN ports that use CEE features will also be
configured to advertise feature settings to remote peers, but not to accept external
configuration. DCBX will be disabled on all non‐CEE ports.
This example can be configured using the following commands:
CN4093(config)# cee enable
Note: Turning CEE on will automatically change some 802.1p QoS and 802.3x
standard flow control settings and menus (see
page 265).
CN4093(config)# cee port INTA1 dcbx enable
CN4093(config)# cee port INTA1 dcbx app_proto advertise
CN4093(config)# cee port INTA1 dcbx ets advertise
CN4093(config)# cee port INTA1 dcbx pfc advertise
262 and used with the previous
"Turning CEE On or Off" on