Chassis Cooling
The fans on the GigaVUE‑HC1-Plus run at 100% of their maximum speed on power up, then drop to approximately 65% during normal operations. The fans are deployed in 2+1 redundancy mode, meaning that a single fan can fail and immediately the third fan can help the chassis maintain the appropriate cooling temperature at 40ºC ambient.They are also hot-swappable.Refer to Module Removal and Replacement Procedure (Hot Removal) for more information on hot-swapping the module.
The temperatures of five components: intake, exhaust, CPU, switch CPU, and GigaSMART CPU temperatures, are monitored. When a component crosses a pre-defined threshold, the fan speed is adjusted dynamically, in increments of approximately 10%.
An SNMP trap is sent when a component reaches the threshold for warning, alert, or critical temperature conditions. Refer to Table 1: Component Temperature Thresholds and Actions for the temperatures at which the warning, alert, and critical traps are sent.
Table 1: Component Temperature Thresholds and Actions
|
Exhaust Temperature |
CPU Temperature |
Switch CPU Temperature |
GigaSMART CPU Temperature |
|
85ºC Warning trap sent |
90ºC Warning trap sent |
105ºC Warning trap sent |
90ºC Warning trap sent |
|
90ºC Alert trap sent |
95ºC Alert trap sent |
115ºC Alert trap sent |
95ºC Alert trap sent |
|
95ºC Critical trap sent |
100ºC Critical trap sent |
140ºC Critical trap sent |
100ºC Critical trap sent |
The output of the following CLI command displays the current intake, exhaust, CPU, switch CPU temperatures, as well as the GigaSMART CPU temperature. The output of the following CLI command displays the fan speed in RPM (the normal operational speed is approximately 12000 RPM; the maximum speed is approximately 19000 RPM):
HC1P-HROT-Remote (config) # show environment
*** Box 1 (GVS-HC1P0/CHS-HW) ***
-----------------------------------------------------------
Power Module 1 (PWR-TAC21):
Product Code : 132-00F1
Serial Num : 1F10-06A1
HW Rev : A0
Status : on
Capacity : N/A
12v voltage : 11.941 V
-----------------------------------------------------------
Power Module 2 (N/A):
Product Code : N/A
Serial Num : N/A
HW Rev : N/A
Status : absent
Capacity : N/A
12v voltage : 0.0 V
-----------------------------------------------------------
Fan tray 1 (FAN-HC1P):
1st fan : 14195 RPM
2nd fan : 13063 RPM
3rd fan : 14144 RPM
4th fan : 13063 RPM
-----------------------------------------------------------
Fan tray 2 (FAN-HC1P):
1st fan : 13845 RPM
2nd fan : 12725 RPM
3rd fan : 13845 RPM
4th fan : 12684 RPM
-----------------------------------------------------------
Fan tray 3 (FAN-HC1P):
1st fan : 13797 RPM
2nd fan : 12684 RPM
3rd fan : 13845 RPM
4th fan : 12684 RPM
-----------------------------------------------------------
Card cc1 (GVS-HC1P0/MB-HW):
Intake temperature : 29 C
Exhaust temperature : 35 C
Cpu temperature : 35 C
Switch temperature : 36 C
vddcore_td3 voltage : 0.817V
0.8v voltage : 0.798V
3.3v voltage : 3.281V
5.0v voltage : 5.000V
3.3v_fpga voltage : 3.320V
2.5v voltage : 2.520V
1.8v voltage : 1.790V
1.2v voltage : 1.190V
1.0v voltage : 0.970V
2.5v_fpga voltage : 2.490V
core_fpga voltage : 1.100V
-----------------------------------------------------------
Card 2 (PRT-HC1-Q04X08-HW):
Intake temperature : 40 C
Exhaust temperature : 32 C
-----------------------------------------------------------
Card 4 (SMT-HC1P-R):
Intake temperature : 32 C
Exhaust temperature : 37 C
oct0_vdd_3.3v voltage : 3.323V
oct0_vdd_sys_ddr0 voltage : 0.855V
oct0_vdd_sys_ddr1 voltage : 0.856V
oct0_vdda_gser voltage : 1.074V
oct0_vdd_ddr0 voltage : 1.199V
oct0_vdd_ddr1 voltage : 1.199V
oct0_vdd_core voltage : 0.947V
oct0_vdd_sys voltage : 0.849V
oct0_vdd_2.5v_vpp0 voltage : 2.503V
oct0_vdd_2.5v_vpp1 voltage : 2.515V
oct0_vddhv_gser voltage : 1.224V
hotswap_control voltage : 11.918V
vcc_fan_3v3 voltage : 3.318V
===========================================================
HC1P-HROT-Remote (config) # show environment type fan
*** Box 1 (GVS-HC1P0/CHS-HW) ***
-----------------------------------------------------------
Fan tray 1 (FAN-HC1P):
1st fan : 14246 RPM
2nd fan : 13020 RPM
3rd fan : 14195 RPM
4th fan : 12977 RPM
-----------------------------------------------------------
Fan tray 2 (FAN-HC1P):
1st fan : 13797 RPM
2nd fan : 12643 RPM
3rd fan : 13845 RPM
4th fan : 12643 RPM
-----------------------------------------------------------
Fan tray 3 (FAN-HC1P):
1st fan : 13797 RPM
2nd fan : 12643 RPM
3rd fan : 13845 RPM
4th fan : 12684 RPM
===========================================================
HC1P-HROT-Remote (config) #
The show chassis command gives the following:
