1 HV Installation and Operations Guide

208 In-Band Management Appendix B

In-Band Management

Following are descriptions of some of the Controller LUN commands used for

In-Band Management of the bridge.

Download Command

The Download (WRITE_BUFFER) command is used to transfer firmware to the

bridge over Fibre Channel. Multiple WRITE_BUFFER commands will be

required to accomplish the total transfer. All write commands except the final

write will have the 3-bit Mode field set to 0x06. The last write command in the

sequence will have the Mode field bits set to 0x07 to signify the end of transfer.

Each WRITE_BUFFER command will return an FCP response. Upgrading the

firmware is successful when the FCP response returns 0x00 (success). When

the transfer process is complete and the firmware image has been successfully

written to FLASH, the bridge will respond to the last transfer with 0x00, then

re-boot with the upgraded firmware. If any errors occur, the Controller will

return an FCP_RSP response RC value other than 0x00 and the bridge will

abort the upgrade. In this case, the bridge will not re-boot and the previous

version of firmware will remain intact. The host will issue a WRITE_BUFFER

command as described in Table 9 on page 209.