Intel S2600GZ S2600GZ/GL - Page 79

Platform Management Functional Overview Intel® Server Board S2600GZ/GL TPS technically unreachable and the BMC will not set the default gateway address to an unreachable value. The BMC returns a 0xCC (Invalid Data Field in Request) completion code for default gateway addresses outside its subnet. 3. If a command is issued to set the default gateway IP address before the BMC's IP address and subnet mask are set, the default gateway IP address is not updated and the BMC returns 0xCC. If the BMC's IP address on a LAN channel changes while a LAN session is in progress over that channel, the BMC does not take action to close the session except through a normal session timeout. The remote client must re-sync with the new IP address. The BMC's new IP address is only available in-band through the "Get LAN Configuration Parameters" command. 6.10.3.5.3 Enabling/Disabling Dynamic Host Configuration (DHCP) Protocol The BMC DHCP feature is activated by using the Set LAN Configuration Parameter command to set LAN configuration parameter 4, IP Address Source, to 2h: "address obtained by BMC running DHCP". Once this parameter is set, the BMC initiates the DHCP process within approximately 100 ms. If the BMC has previously been assigned an IP address through DHCP or the Set LAN Configuration Parameter command, it requests that same IP address to be reassigned. If the BMC does not receive the same IP address, system management software must be reconfigured to use the new IP address. The new address is only available in-band, through the IPMI Get LAN Configuration Parameters command. Changing the IP Address Source parameter from 2h to any other supported value will cause the BMC to stop the DHCP process. The BMC uses the most recently obtained IP address until it is reconfigured. If the physical LAN connection is lost (that is, the cable is unplugged), the BMC will not reinitiate the DHCP process when the connection is re-established. 6.10.3.5.4 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." 6.10.3.6 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. 66 Revision 1.1 Intel order number G24881-004