82598EB Datasheet, PDF (465/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - LAN Fail-Over in LAN Teaming Mode
5.3.11.2.2 Gratuitous ARPs
In order to notify the link partner that a port switching has occurred, 82598EB can be configured to
automatically send gratuitous ARPs. These gratuitous ARPs cause the link partner to update its ARP
tables to reflect the change.
The BMC might enable/disable gratuitous ARPs, configure the number of gratuitous ARPs, or the
interval between them by modifying the fail-over register.
5.3.11.2.3 Link Down Timeout
The BMC can control the timeout for a link to be considered invalid. The 82598EB waits on this timeout
before attempting to switch from an inactive port.
5.3.11.3 Fail-Over Register
This register is loaded at power up from the EEPROM. The BMC can change the contents of the fail-over
register using the Update Management Receive Filters command, with parameter 0x0A, detailed in
Section 5.3.10.1.6.
Table 5-15 lists the register different bits:
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