Configure A Dcbx Operation; Dcbx Operation; Dcbx Port Roles - Dell C9000 Series Networking Configuration Manual

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priority scheduling (strict-priority command). The priority group for strict-priority scheduling

(scheduler strict command.

Configure a DCBx Operation

DCB devices use data center bridging exchange protocol (DCBx) to exchange configuration information with

directly connected peers using the link layer discovery protocol (LLDP) protocol.

DCBx can detect the misconfiguration of a peer DCB device, and optionally, configure peer DCB devices with

DCB feature settings to ensure consistent operation in a data center network.

DCBx is a prerequisite for using DCB features, such as priority-based flow control (PFC) and enhanced traffic

selection (ETS), to exchange link-level configurations in a converged Ethernet environment. DCBx is also

deployed in topologies that support lossless operation for FCoE or iSCSI traffic. In these scenarios, all network

devices are DCBx-enabled (DCBx is enabled end-to-end).

Configure Enhanced Transmission Selection

DCBx supports the following versions: CIN, CEE, and IEEE2.5.

DCBx is not supported on PE ports and C9010 cascade ports (member ports in the C9010 LAG created to

connect to an attached C1048P).

Prerequisite: For DCBx, enable LLDP on all DCB devices.

DCBx performs the following operations:

Discovers DCB configuration (such as PFC and ETS) in a peer device.

Detects DCB mis-configuration in a peer device; that is, when DCB features are not compatibly

configured on a peer device and the local switch. Mis-configuration detection is feature-specific

because some DCB features support asymmetric configuration.

Reconfigures a peer device with the DCB configuration from its configuration source if the peer device

is willing to accept configuration.

Accepts the DCB configuration from a peer if a DCBx port is in "willing" mode to accept a peer's DCB

settings and then internally propagates the received DCB configuration to its peer ports.

To enable the auto-configuration of DCBx-enabled ports and propagate DCB configurations learned from

peer DCBx devices internally to other switch ports, use the following DCBx port roles.

Auto-upstream

The port advertises its own configuration to DCBx peers and is willing to receive peer

configuration. The port also propagates its configuration to other ports on the switch.

The first auto-upstream that is capable of receiving a peer configuration is elected as

the configuration source. The elected configuration source then internally propagates

Data Center Bridging (DCB)