82598EB Datasheet, PDF (446/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - SMBus Pass-Through Transactions
Reserved
6
CBDM
7
Reserved. Must be set to 1b.
Configure the BMC Dedicated MAC Address.
Note: This bit should be set to 0b when the RCV_EN bit (bit 0) is not set.
0b: The 82598EB shares the MAC address for MNG traffic with the host MAC address
specified in EEPROM words 2h:0h.
1b: 82598EB uses the BMC dedicated MAC address as a filter for incoming receive packets
and as the sender address in ARP response packets.
The BMC MAC address is set in bytes 7:2 in this command.
If the short version of the command is used, the 82598EB uses the MAC address
configured in the most recent long version of the command in which the CBDM bit was
set. If no such previous long command exists, then the 82572 uses the MAC address
configured in the EEPROM as MAC address 3 (MMAL/H3) in the pass-through LAN
configuration structure.
When the Dedicated MAC address feature is activated, the 82598EB uses the following
registers to filter in all the traffic addressed to the BMC MAC. The BMC should not modify
these registers as follows: Manageability Decision Filter - MDEF7 (and corresponding bit 7
in Management Control To Host Register - MANC2H), Manageability MAC Address Low -
MMAL3 and Manageability MAC Address High - MMAH3 (and corresponding bit 3 of
Manageability Filters Valid - MFVAL).
5.3.10.1.3.1 Management MAC Address (Data Bytes 7:2)
Ignored if the CBDM bit is not set. This MAC address is used to configure the dedicated MAC address. In
addition, it is used in the ARP response packet when the EN_ARP_RES bit is set. This MAC address is
also used when CBDM bit is set in subsequent short versions of this command.
5.3.10.1.3.2 Management IP Address (Data Bytes 11:8)
This IP address is used to filter ARP request packets.
5.3.10.1.3.3 Asynchronous Notification SMBus Address (Data Byte 12)
This address is used for the asynchronous notification SMBus transaction and for direct receive.
5.3.10.1.3.4 Interface Data (Data Byte 13)
Interface data byte used in asynchronous notification.
5.3.10.1.3.5 Alert Value Data (Data Byte 14)
Alert Value data byte used in asynchronous notification.
5.3.10.1.4 Force TCO Command
This command causes 82598EB to perform a TCO reset, if Force TCO reset is enabled in the EEPROM.
The force TCO reset clears the data path (Rx/Tx) of 82598EB to enable the BMC to transmit/receive
packets through 82598EB. Note that in single -address mode, both ports are reset when the command
is issued. In dual-address mode, force TCO reset is asserted only to the port related to the SMBus
address the command was issued to. This command should only be used when the BMC is unable to
transmit receive and suspects that 82598EB is inoperable. This command also causes the LAN device
driver to unload. It is recommended to perform a system restart to resume normal operation.
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