$ ipmitool -I lanplus -H 192.168.10.3 -U ADMIN -P PASSWD sensor list|grep FAN
FAN1             | 1000.000   | RPM        | ok    | 300.000   | 500.000   | 700.000   | 25300.000 | 25400.000 | 25500.000
FAN2             | na         |            | na    | na        | na        | na        | na        | na        | na
FAN3             | na         |            | na    | na        | na        | na        | na        | na        | na
FAN4             | na         |            | na    | na        | na        | na        | na        | na        | na
FANA             | 1300.000   | RPM        | ok    | 300.000   | 500.000   | 700.000   | 25300.000 | 25400.000 | 25500.000

$ ipmitool -I lanplus -H 192.168.10.3 -U ADMIN -P PASSWD  raw 0x30 0x45 0x01 0x01

$ ipmitool -I lanplus -H 192.168.10.3 -U ADMIN -P PASSWD sensor thresh FANA lower 0 100 150
Locating sensor record 'FANA'...
Setting sensor "FANA" Lower Non-Recoverable threshold to 0.000
Setting sensor "FANA" Lower Critical threshold to 100.000
Setting sensor "FANA" Lower Non-Critical threshold to 150.000

$ ipmitool -I lanplus -H 192.168.10.3 -U ADMIN -P PASSWD sensor thresh FANA upper 23000 24000 25000
Locating sensor record 'FANA'...
Setting sensor "FANA" Upper Non-Critical threshold to 23000.000
Setting sensor "FANA" Upper Critical threshold to 24000.000
Setting sensor "FANA" Upper Non-Recoverable threshold to 25000.000