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MPCMM0001 Chassis Management Module Software Technical Product Specification 19
Software Specifications
2.5 Remote Procedural Call (RPC) Interface
In addition to the console command-line interface, the CMM can be administered by custom
remote applications via remote procedure calls (RPC). RPC is covered in Section 19, “Remote
Procedure Calls (RPC)” on page 174.
2.6 RMCP
RMCP (Remote Management Control Protocol) is a protocol that defines a method to send IPMI
packets over LAN. The RMCP server on the CMM can decode RMCP packages and forward the
IPMI messages to the appropriate channels including: SBC blades, PEMs, and FanTrays or local
destination within the CMM. When there is a responding IPMI message coming from SBC blades,
PEMs, or FanTrays destined to RMCP client, the RMCP server will format this IPMI message into
a RMCP message and send it to through the designated LAN interface back to originator. RMCP is
covered in Section 20, “RMCP” on page 190.
2.7 Ethernet Interfaces
The CMM contains two Ethernet ports. The software can configure each of these ports to either the
front panel, to the backplane, or to the rear transition module (RTM). Information on configuring
the Ethernet interfaces is covered in Section 8.3.1, “Setting IP Address Properties” on page 72.
2.8 Sensor Event Logs (SEL)
The AdvancedTCA CMM implements system event logs according to Section 3.5 of the PICMG
3.0 Specification. The SEL contained on the CMM is fully IPMI compliant.
2.8.1 CMM SEL Architecture
The MPCMM0001 uses a single flat SEL file stored locally in the /etc/cmm directory. The SEL
maintains a list of all the sensor events in the shelf. Each of the managed devices may keep its own
SEL records in local SELs, but the master copy for the shelf is maintained by the CMM.
The SEL is limited to 65536 bytes. In order to keep the SEL from getting full, which can cause loss
of error logging, the SEL is checked every 15 minutes by the CMM, and if the size of the cmm_sel
is greater than 40000 bytes, the SEL is archived in gzip format and saved in /home/log/SEL. The
names of the saved logs will be cmm_sel.0.gz, cmm_sel.1.gz, and so on, to a maximum of 16 logs
where they are then rolled over.
Note: Archived files should NEVER be decompressed on the CMM as the resulting prolonged flash file
writing could disrupt normal CMM operation and behavior. Using FTP, transfer the files to a
different system before decompressing the archive using utilities such as gzip.
2.8.2 Retrieving a SEL
To retrieve a SEL from the CMM, issues the following command:
cmmget [-l location] -d sel