Datasheet

Intel
®
Server Board S2400GP TPS Platform Management Functional Overview
Revision 1.01
Intel order number G50295-002
71
6.12 Messaging Interfaces
The BMC supports the following communications interfaces:
 Host SMS interface by means of low pin count (LPC)/keyboard controller style (KCS)
interface
 Host SMM interface by means of low pin count (LPC)/keyboard controller style (KCS)
interface
 Intelligent Platform Management Bus (IPMB) I2C interface
 LAN interface using the IPMI-over-LAN protocols
Every messaging interface is assigned an IPMI channel ID by IPMI 2.0.
Table 18. Messaging Interfaces
Channel ID
Interface
Supports
Sessions
0
Primary IPMB
No
1
LAN 1
Yes
2
LAN 2
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.
6.12.1 User Model
The BMC supports the IPMI 2.0 user model. 15 user IDs are supported. These 15 users can be
assigned to any channel. The following restrictions are placed on user-related operations:
1. User names for User IDs 1 and 2 cannot be changed. These are always “” (Null/blank)
and “root” respectively.
2. User 2 (“root”) always has the administrator privilege level.
3. All user passwords (including passwords for 1 and 2) may be modified.
User IDs 3-15 may be used freely, with the condition that user names are unique. Therefore, no
other users can be named “” (Null), “root,” or any other existing user name.
6.12.2 IPMB Communication Interface
The IPMB communication interface uses the 100 KB/s version of an I
2
C bus as its physical
medium. For more information on I
2
C specifications, see The I
2
C Bus and How to Use It. The
IPMB implementation in the BMC is compliant with the IPMB v1.0, revision 1.0.