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| Sun Ethernet Fabric Operating System ### DCB Administration Guide

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### Configuration Guidelines

The following configuration guidelines apply where DCB is used:

- Configure the PG based on the traffic types and bandwidth requirements.

- The PFC priority set must match the peer's configuration. VLAN priority 3 is normally used. SEFOS supports a maximum of two priorities.

- Evaluate the following default settings table to determine if the default settings are applicable.

- If SEFOS DCB is to be used as a pass-through for FCoE traffic, the port connected to the host CNA running FCoE, the port connected to a third-party FCoE switch must be configured to belong to the same VLAN as what is configured on the third-party switch.

  - You must start LLDP system control status before DCBX TLVs can be exchanged.

  - You must enable LLDP for both transmit and receive, which is the default behavior.

- To enable and configure SEFOS DCB, you must complete the following minimum tasks:

  - Enable LLDP.

  - Enable DCB globally.

  - Enable the interface DCB feature that will be involved in DCBX exchange.

  - Configure the VLAN to DCB-capable ports if needed.

- The SEFOS DCB will not accept its configurations from the peer.

Refer to the Sun Ethernet Fabric Operating System CLI Base Reference Manual for the complete set of commands and the various options available for configuring DCB.

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