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IPMI Controller: IPMI Message Protocol
Katana
®
752i User’s Manual 10006024-04
11-6
The PICMG 2.9 specification defines addressing on the public and private IPMBs. It defines
the slave addresses assigned to the chassis, power supplies, and peripheral boards based on
geographical addressing.
Table 11-3 lists the slave address of each peripheral board, based
on its geographical address.
Table 11-3: IPMB Slave Addresses
IPMI MESSAGE PROTOCOL
The IPMI message protocol is designed to be robust and support many different physical
interfaces. The Zircon PM supports IPMI messages over the IPMB interface. Messages are
defined as either a request or a response, as indicated by the least significant bit in the Net-
work Function Code of the message.
Table 11-4 shows the format of an IPMI request mes-
sage.
Table 11-4: Format for IPMI Request Message
Geographical
Address [0:4]
IPMB Address
(Hex)
Geographical
Address [0:4]
IPMB Address
(Hex)
0 disabled 16 D0
1 B017D2
2 B218D4
3 B419D6
4 B620D8
5 B821DA
6BA22DC
7BC23DE
8BE24E0
9C025E2
10 C4 26 E4
11 C6 27 E6
12 C8 28 E8
13 CA 28 EA
14 CC 30 EC
15 CE 31 disabled
Byte: Bits:
7: 6: 5: 4: 3: 2: 1: 0:
1
rsSA
2
netFn rsLUN
3
Checksum
4
rqSA
5
rqSeq rqLUN