Intel DBS2400GP2 Datasheet download pdf (Page 87)

Intel

Server Board S2400GP TPS Platform Management Functional Overview

Revision 1.01

Intel order number G50295-002

6.12.3.5.4 DHCP-related LAN Configuration Parameters

Users may not change the following LAN parameters while the DHCP is enabled:

 LAN configuration parameter 3 (IP Address)

 LAN configuration parameter 6 (Subnet Mask)

 LAN configuration parameter 12 (Default Gateway Address)

To prevent users from disrupting the BMC’s LAN configuration, the BMC treats these

parameters as read-only while DHCP is enabled for the associated LAN channel. Using the Set

LAN Configuration Parameter command to attempt to change one of these parameters under

such circumstances has no effect, and the BMC returns error code 0xD5, “Cannot Execute

Command. Command, or request parameter(s) are not supported in present state.”

6.12.3.6 DHCP BMC Hostname

The BMC allows setting a DHCP Hostname using the Set/Get LAN Configuration Parameters

command.

 DHCP Hostname can be set regardless of the IP Address source configured on the BMC.

But this parameter is only used if the IP Address source is set to DHCP.

 When Byte 2 is set to “Update in progress”, all the 16 Block Data Bytes (Bytes 3 – 18)

must be present in the request.

 When Block Size < 16, it must be the last Block request in this series. In other words Byte

2 is equal to “Update is complete” on that request.

 Whenever Block Size < 16, the Block data bytes must end with a NULL Character or Byte

(=0).

 All Block write requests are updated into a local Memory byte array. When Byte 2 is set to

“Update is Complete”, the Local Memory is committed to the NV Storage. Local Memory is

reset to NULL after changes are committed.

 When Byte 1 (Block Selector = 1), firmware resets all the 64 bytes local memory. This can

be used to undo any changes after the last “Update in Progress”.

 User should always set the hostname starting from block selector 1 after the last “Update

is complete”. If the user skips block selector 1 while setting the hostname, the BMC will

record the hostname as “NULL,” because the first block contains NULL data.

 This scheme effectively does not allow a user to make a partial Hostname change. Any

Hostname change needs to start from Block 1.

 Byte 64 ( Block Selector 04h byte 16) is always ignored and set to NULL by BMC which

effectively means we can set only 63 bytes.

 User is responsible for keeping track of the Set series of commands and Local Memory

contents.

While BMC firmware is in “Set Hostname in Progress” (Update not complete), the firmware

continues using the Previous Hostname for DHCP purposes.

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Intel DBS2400GP2 Datasheet Page 87