| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475 |
- Operating FCoE using bnx2fc
- ===========================
- Broadcom FCoE offload through bnx2fc is full stateful hardware offload that
- cooperates with all interfaces provided by the Linux ecosystem for FC/FCoE and
- SCSI controllers. As such, FCoE functionality, once enabled is largely
- transparent. Devices discovered on the SAN will be registered and unregistered
- automatically with the upper storage layers.
- Despite the fact that the Broadcom's FCoE offload is fully offloaded, it does
- depend on the state of the network interfaces to operate. As such, the network
- interface (e.g. eth0) associated with the FCoE offload initiator must be 'up'.
- It is recommended that the network interfaces be configured to be brought up
- automatically at boot time.
- Furthermore, the Broadcom FCoE offload solution creates VLAN interfaces to
- support the VLANs that have been discovered for FCoE operation (e.g.
- eth0.1001-fcoe). Do not delete or disable these interfaces or FCoE operation
- will be disrupted.
- Driver Usage Model:
- ===================
- 1. Ensure that fcoe-utils package is installed.
- 2. Configure the interfaces on which bnx2fc driver has to operate on.
- Here are the steps to configure:
- a. cd /etc/fcoe
- b. copy cfg-ethx to cfg-eth5 if FCoE has to be enabled on eth5.
- c. Repeat this for all the interfaces where FCoE has to be enabled.
- d. Edit all the cfg-eth files to set "no" for DCB_REQUIRED** field, and
- "yes" for AUTO_VLAN.
- e. Other configuration parameters should be left as default
- 3. Ensure that "bnx2fc" is in SUPPORTED_DRIVERS list in /etc/fcoe/config.
- 4. Start fcoe service. (service fcoe start). If Broadcom devices are present in
- the system, bnx2fc driver would automatically claim the interfaces, starts vlan
- discovery and log into the targets.
- 5. "Symbolic Name" in 'fcoeadm -i' output would display if bnx2fc has claimed
- the interface.
- Eg:
- [root@bh2 ~]# fcoeadm -i
- Description: NetXtreme II BCM57712 10 Gigabit Ethernet
- Revision: 01
- Manufacturer: Broadcom Corporation
- Serial Number: 0010186FD558
- Driver: bnx2x 1.70.00-0
- Number of Ports: 2
- Symbolic Name: bnx2fc v1.0.5 over eth5.4
- OS Device Name: host11
- Node Name: 0x10000010186FD559
- Port Name: 0x20000010186FD559
- FabricName: 0x2001000DECB3B681
- Speed: 10 Gbit
- Supported Speed: 10 Gbit
- MaxFrameSize: 2048
- FC-ID (Port ID): 0x0F0377
- State: Online
- 6. Verify the vlan discovery is performed by running ifconfig and notice
- <INTERFACE>.<VLAN>-fcoe interfaces are automatically created.
- Refer to fcoeadm manpage for more information on fcoeadm operations to
- create/destroy interfaces or to display lun/target information.
- NOTE:
- ====
- ** Broadcom FCoE capable devices implement a DCBX/LLDP client on-chip. Only one
- LLDP client is allowed per interface. For proper operation all host software
- based DCBX/LLDP clients (e.g. lldpad) must be disabled. To disable lldpad on a
- given interface, run the following command:
- lldptool set-lldp -i <interface_name> adminStatus=disabled
|
