Dell Intel PRO Family of Adapters - Manual (Page 37)

Criteria of Creating, Resetting and Destroying FCoE Interface
In this section the dcbtool is used to describe the conditions of the DCB feature status because the meaning is more
understandable and precise. Although you may also issue the commands at run-time, the commands are intended only to be
used for description purpose.
PFC and App:FCoE
DCB is configured correctly if
1. The command dcbtool gc ethX dcb shows DCB State: "on"
2. The command dcbtool gc ethX app:0 shows "Enable:true, Advertise:true, Willing:true."
3. The command dcbtool go ethX app:0 shows "OperMode:true."
4. The command dcbtool go ethX pfc shows "OperMode:true" and the values of pfcup.
5. The command dcbtool go ethX app:0 shows appcfg. The bits set to 1 are also set to 1 in pfcup found in (4).
Logical Link TLV
The Logical Link TLV feature is configured correctly if
1. The command dcbtool gc ethX ll:0 shows "Enable:true, Advertise:true, Willing:true."
2. The command dcbtool go ethX ll:0 shows "OperMode:true."
3. The command dcbtool gp ethX ll:0 shows "Link Status:up."
Criteria to create FCoE interface
If DCB is required at the Ethernet port, an FCoE interface may be created only if the DCB and the Logical Link TLV feature are
configured correctly. If DCB is not required at the Ethernet port, the FCoE interface may be created. FCoE interfaces are
normally created by the fcoe system service.
Criteria to Destroy FCoE Interface
An FCoE interface will only be destroyed when the fcoe system service is stopped.
Criteria to reset FCoE interface
The fcoe system service does not reset any FCoE interfaces.
Changing DCB Configuration, Qdisc and Filters
Changing the DCB configuration, qdisc, and filter are considered to be administrative actions. When the fcoe system service
starts up, it sets up the default DCB configuration, qdisc, and filter for reliable FCoE operations. Administrators may alter the
configuration while the service is running.
Changing the DCB parameters may cause the fcoemon daemon to delete the existing multiq queue discipline, skbedit filter and
re-add; but the fcoe service will not touch (for example, destroy or reset) the FCoE interface. Changing the DCB configuration,
qdisc, and filter should be avoided while I/O traffic are in progress.
Files
The Installation of the Open-FCoE management tools includes the following files:
SLES11 SP3
/usr/sbin/fcoemon
/usr/sbin/fcoeadm
/sbin/lldpad
/sbin/dcbtool
/etc/fcoe/config