Server Management Guide
Baseboard Management Controller
Intel
®
Server Boards and Server Platforms Server Management Guide 35
The BMC LAN failover functionality can be configurable from the IDA/SYSCFG as well as the
BMC’s Embedded UI, you specify the physical LAN links constitute the redundant network paths or
physical LAN links constitute different network paths.
BMC will support only an “all or nothing” approach – that is, all interfaces bonded together, or none
are bonded together.
The LAN Failover feature applies only to BMC LAN traffic. It bonds all available Ethernet devices but
only one is active at a time. When enabled, If the active connection’s leash is lost, one of the secondary
connections is automatically configured so that it has the same IP address. Traffic immediately resumes
on the new active connection. But IP address will be always displayed in BMC LAN channel 1.
The LAN Failover enable/disable command may be sent at any time. After it has been enabled,
standard IPMI commands for setting channel configuration that specify a LAN channel other than the
first will return an error code.
2.6.5 IPMI 2.0 Channel Management
Every messaging interface is assigned an IPMI channel ID by IPMI 2.0. Commands are provided to
configure each channel for privilege levels and access modes. The following table shows the standard
channel assignments.
Table 14. BMC LAN Channel Assignments
Channel
ID
Interface
Supports
Sessions
0
Primary IPMB
No
1
LAN 1
Yes
2
LAN 2 (platform specific)
Yes
3
LAN3
1
(Provided by the Intel
®
Dedicated Server Management NIC)
Yes
4
Reserved
Yes
5
USB
No
6
Secondary IPMB
No
7
SMM
No
8– 0Dh
Reserved
–
0Eh
Self
2
–
0Fh
SMS/Receive Message Queue
No
Notes:
1. Optional hardware supported by the server system.
2. Refers to the actual channel used to send the request.
For a list of channel number assignments, see the appropriate Platform Specific Information.