To turn a slot off in a GSR/12008 do the following command:
Cisco_GSR_Router# test mbus power
Cisco_GSR_Router#sh diags 2
SLOT 2 (RP/LC 2 ): 1 port ATM Over SONET OC12c/STM-4c Multi Mode
MAIN: type 35, 800-3174-01 rev A0 dev 16777215
HW config: 0x01 SW key: FF-FF-FF
PCA: 73-2526-04 rev A0 ver 4
HW version 1.1 S/N CAB015100FV
MBUS: MBUS Agent (1) 73-2146-06 rev A0 dev 0
HW version 1.1 S/N CAB014400FK
Test hist: 0xFF RMA#: FF-FF-FF RMA hist: 0xFF
DIAG: Test count: 0xFFFFFFFF Test results: 0xFFFFFFFF
L3 Engine: 0 – OC12 (622 Mbps)
MBUS Agent Software version 01.43 (RAM) (ROM version is 02.00)
Using CAN Bus A
ROM Monitor version 10.03
Fabric Downloader version used 13.04 (ROM version is 13.04)
Primary clock is CSC 1
Board is analyzed
Board State is Line Card Enabled (IOS RUN )
Insertion time: 00:00:13 (14w3d ago)
DRAM size: 268435456 bytes
FrFab SDRAM size: 67108864 bytes
ToFab SDRAM size: 67108864 bytes
0 crashes since restart
Cisco_GSR_Router# test mbus power 2 off
MBUS Slot 2 Power state = Off
Cisco_GSR_Router#
000142: 14w3d: %LINK-5-CHANGED: Interface ATM2/0, changed state to administratively downsh
% Type "show ?" for a list of subcommands
Cisco_GSR_Router#sh diags 2
SLOT 2 (RP/LC 2 ): 1 port ATM Over SONET OC12c/STM-4c Multi Mode
MAIN: type 35, 800-3174-01 rev A0 dev 16777215
HW config: 0x01 SW key: FF-FF-FF
PCA: 73-2533-04 rev A0 ver 4
HW version 1.1 S/N CAB015100FV
MBUS: MBUS Agent (1) 73-2146-06 rev A0 dev 0
HW version 1.1 S/N CAB014400FK
Test hist: 0xFF RMA#: FF-FF-FF RMA hist: 0xFF
DIAG: Test count: 0xFFFFFFFF Test results: 0xFFFFFFFF
L3 Engine: 0 – OC12 (622 Mbps)
MBUS Agent Software version 01.43 (RAM) (ROM version is 02.00)
Using CAN Bus A
Board has no primary clock
Board is disabled analyzed idbs-rem
Board State is Card NOT Powered (PWR OFF )
Insertion time: 00:00:13 (14w3d ago)
Cisco_GSR_Router#