root@proxmox4:~# dpkg -l|grep ipmi
ii freeipmi-common 1.4.5-3 all GNU implementation of the IPMI protocol - common files
ii ipmitool 1.8.14-4 amd64 utility for IPMI control with kernel driver or LAN interface
ii libfreeipmi16 1.4.5-3 amd64 GNU IPMI - libraries
ii libipmiconsole2 1.4.5-3 amd64 GNU IPMI - Serial-over-Lan library
ii libipmidetect0 1.4.5-3 amd64 GNU IPMI - IPMI node detection library
ii libopenipmi0 2.0.16-1.4 amd64 Intelligent Platform Management Interface - runtime
ii openipmi 2.0.16-1.4 amd64 Intelligent Platform Management Interface (for servers)

root@proxmox4:~# systemctl status ipmievd.service
● ipmievd.service - IPMI event daemon
Loaded: loaded (/lib/systemd/system/ipmievd.service; disabled)
Active: active (running) since Tue 2017-03-07 14:58:16 MYT; 18s ago
Process: 17599 ExecStart=/usr/sbin/ipmievd $IPMIEVD_OPTIONS (code=exited, status=0/SUCCESS)
Main PID: 17601 (ipmievd)
CGroup: /system.slice/ipmievd.service
└─17601 /usr/sbin/ipmievd open daemon
Mar 07 14:58:16 proxmox4.4 ipmievd[17599]: ipmievd: using pidfile /var/run/ipmievd.pid0
Mar 07 14:58:16 proxmox4.4 ipmievd[17601]: Reading sensors...
Mar 07 14:58:16 proxmox4.4 systemd[1]: Started IPMI event daemon.
Mar 07 14:58:16 proxmox4.4 ipmievd[17601]: Waiting for events...

root@proxmox4:~# cat /etc/modules
# /etc/modules: kernel modules to load at boot time.
#
# This file contains the names of kernel modules that should be loaded
# at boot time, one per line. Lines beginning with "#" are ignored.

ipmi_si type=kcs ports=0xCA2 regspacings=1
ipmi_devintf
ipmi_msghandler
ipmi_poweroff
ipmi_watchdog

root@proxmox4:~# lsmod|grep ipmi
ipmi_ssif 24576 0
ipmi_si 57344 1
ipmi_poweroff 16384 0
ipmi_devintf 20480 2
ipmi_msghandler 49152 4 ipmi_ssif,ipmi_devintf,ipmi_poweroff,ipmi_si

root@proxmox4:~# for i in `seq 1 14`; do ipmitool lan print $i 2>/dev/null | grep -q ^Set && echo Channel $i; done
root@proxmox4:~#
root@proxmox4:~#

root@proxmox4:~# ipmitool lan print
Invalid channel: 0
root@proxmox4:~#
root@proxmox4:~# ipmitool lan print 2
Invalid channel: 2

root@proxmox4:~# ipmitool user list
Get User Access command failed (channel 14, user 1): Invalid command
root@proxmox4:~#
root@proxmox4:~# ipmitool user list 2
Get User Access command failed (channel 2, user 1): Invalid command

root@proxmox4:~# ipmitool sdr type "Power Supply"
Power Supply 1 | 03h | ok | 10.1 | 55 Watts, Presence detected
Power Supply 2 | 04h | ok | 10.2 | 55 Watts, Presence detected
Power Supplies | 05h | ok | 10.3 | Fully Redundant

root@proxmox4:~# ipmitool mc info
Device ID : 17
Device Revision : 1
Firmware Revision : 1.78
IPMI Version : 2.0
Manufacturer ID : 11
Manufacturer Name : Hewlett-Packard
Product ID : 0 (0x0000)
Product Name : Unknown (0x0)
Device Available : yes
Provides Device SDRs : yes
Additional Device Support :
Sensor Device
SDR Repository Device
SEL Device
FRU Inventory Device

root@proxmox4:~# ipmitool sensor
UID Light | 0x0 | discrete | 0x0080| na | na | na | na | na | na
Sys. Health LED | 0x0 | discrete | 0x0080| na | na | na | na | na | na
Power Supply 1 | 55 | Watts | ok | na | na | na | na | na | na
Power Supply 2 | 55 | Watts | ok | na | na | na | na | na | na
Power Supplies | 0x0 | discrete | 0x0180| na | na | na | na | na | na

for i in `seq 1 14`; do ipmitool channel info $i ; done