Technical Product Specification

Intel® Server Boards S4600LH2/T2 TPS
Revision 2.0
71
 Dynamic Closed Loop Thermal Throttling (Dynamic-CLTT): CLTT control registers are configured by
BIOS MRC during POST. The memory throttling is run as a closed-loop system with the DIMM
temperature sensors as the control input. Adjustments are made to the throttling during runtime based on
changes in system cooling (fan speed).
Both Static and Dynamic CLTT modes implement a Hybrid Closed Loop Thermal Throttling mechanism
whereby the Integrated Memory Controller estimates the DRAM temperature in between actual reads of the
memory thermal sensors.
6.10 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 22. Factory Configured PEF Table Entries
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.
6.10.1
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.