Reference Guide

294 | Data Center Bridging (DCB)
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• CEE-DCBX supports T11-compliant Gen-2 CNAs.
• CIN-DCBX supports Gen-1 CNAs.
• IEEE 802.1Qaz (Draft 2.5) supports Gen-2 CNAs.
You can also configure an interface to operate using the DCBx version received from a peer
(auto-configure option). In this case, the S6000 detects the capabilities of a CNA and auto-configures
the interface to the correct DCBx mode.
• 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).
DCBx Configuration Procedure
To configure an S6000for 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.
4. Configure ports to operate in a manual role.
To verify the DCBx configuration on a port, use the
show interface DCBx detail command (Figure 15-11).
Configure DCBx operation at the interface level on a switch or globally on the switch.
Prerequisite: To advertise DCBx TLVs to peers, DCBx requires LLDP to be enabled. For more
information, Refer to Chapter 27, Link Layer Discovery Protocol (LLDP).
Configuring DCBx on an Interface
To configure DCBx operation on an interface, follow these steps:
Step Task Command Command Mode
1 Enter INTERFACE Configuration mode. interface type slot/port CONFIGURATION
2 Enter LLDP Configuration mode to enable DCBx
operation.
[no] protocol lldp
INTERFACE
3 Configure the DCBx version used on the interface, where:
auto configures the port to operate using the DCBx version
received from a peer.
• cee configures the port to use CEE (Intel 1.01).
• cin configures the port to use Cisco-Intel-Nuova
(DCBx 1.0).
• ieee-v2.5 configures the port to use IEEE 802.1Qaz
(Draft 2.5).
Default: Auto.
[no] DCBx version {auto |
cee | cin | ieee-v2.5}
PROTOCOL LLDP