Chassis Cooling

The fans on the GigaVUE-HC3 run at 50% of their maximum speed on power up, then drop to approximately 30% during normal operations. The temperatures of five components are monitored: transceivers, exhaust, CPU, switch CPU, and GigaSMART CPU (e1/e2). When a component crosses a pre-defined threshold, the fan speed is adjusted dynamically, in increments of approximately 15% (from 30% to 45% to 60% to 75%, and finally to a maximum of 80% for CCv1 and CCv2).

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 and any additional action that occurs at a threshold.

Table 1: Component Temperature Thresholds and Actions

Transceiver Temperature	Exhaust Temperature	CPU Temperature	Switch CPU Temperature	GigaSMART CPU (e1/e2) Temperature
70ºC Fan’s speed increases	70ºC Fan’s speed increases	95ºC Fan’s speed increases	105ºC Fan’s speed increases	85ºC Fan’s speed increases
80ºC SNMP trap sent; Transceiver power disabled and link goes down	75ºC SNMP trap sent	100ºC SNMP trap sent	110ºC SNMP trap sent	90ºC SNMP trap sent
85ºC Link stays down	80ºC System goes to halt	105ºC System goes to halt	115ºC System goes to halt	95ºC SMT-HC3-C05 card shuts down

Transceiver Temperature

Exhaust Temperature

CPU Temperature

Switch CPU Temperature

GigaSMART CPU (e1/e2) Temperature

70ºC

Fan’s speed increases

70ºC

Fan’s speed increases

95ºC

Fan’s speed increases

105ºC

Fan’s speed increases

85ºC

Fan’s speed increases

80ºC

SNMP trap sent; Transceiver power disabled and link goes down

75ºC

SNMP trap sent

100ºC

SNMP trap sent

110ºC

SNMP trap sent

90ºC

SNMP trap sent

85ºC

Link stays down

80ºC

System goes to halt

105ºC

System goes to halt

115ºC

System goes to halt

95ºC

SMT-HC3-C05 card shuts down

The output of the following CLI command for CCv1 displays the current exhaust, CPU, and switch CPU temperatures, as well as the intake temperature. For the GigaSMART card, SMT-HC3-C05, the temperatures of two GigaSMART CPUs are displayed under e1 CPU temperature and e2 CPU temperature, as follows:

(config) show environment type temperature

*** Box 1 (GVS-HC300) ***

-----------------------------------------------------------

 Card cc1 (CTL-HC3-001):

 Intake temperature :           26 C

 Exhaust temperature :          25 C

 CPU temperature :              24 C

 Switch CPU temperature :       45 C

-----------------------------------------------------------

 Card 1 (PRT-HC3-C08Q08):

 Intake temperature :           28 C

 Exhaust temperature :          26 C

-----------------------------------------------------------

 Card 2 (BPS-HC3-C25F2G):

 Intake temperature :           31 C

 Exhaust temperature :          40 C

-----------------------------------------------------------

 Card 3 (SMT-HC3-C05):

 Intake temperature :           33 C

 Exhaust temperature :          43 C

 e1 CPU temperature :           38 C

 e2 CPU temperature :           37 C

-----------------------------------------------------------

 Card 4 (PRT-HC3-X24):

 Intake temperature :           27 C

 Exhaust temperature :          28 C

===========================================================

The output of the following CLI command for CCv2 displays the current exhaust, CPU, and switch CPU temperatures, as well as the intake temperature, as follows:

(config) show environment type temperature

*** Box 1 (GVS-HC300) ***

-----------------------------------------------------------

 Card cc1 (CTL-HC3-002):

 Intake temperature :           28 C

 Exhaust temperature :          28 C

 CPU temperature :              28 C

 Switch CPU temperature :       44 C

-----------------------------------------------------------

 Card 1 (PRT-HC3-C16):

 Intake temperature :           33 C

 Exhaust temperature :          38 C

-----------------------------------------------------------

 Card 2 (PRT-HC3-C08Q08):

 Intake temperature :           31 C

 Exhaust temperature :          35 C

-----------------------------------------------------------

 Card 4 (BPS-HC3-C25F2G):

 Intake temperature :           32 C

 Exhaust temperature :          31 C

===========================================================

The output of the following CLI command displays the temperature of transceivers:

(config) show port params port-list 1/1/c5

              Parameter           1/1/c5

 ====================== ===============

...

              SFP type:        qsfp28 sr

...

 SFP Power (1-2) (dBm):    -40.00 -40.00

 SFP Power (3-4) (dBm):    -40.00 -40.00

 SFP Power (5-6) (dBm):         -      -

 SFP Power (7-8) (dBm):         -      -

 SFP Power (9-10)(dBm):         -      -

   SFP Temperature (C):            20.94

...

The output of the following CLI command displays the fan speed in RPM:

(config) show environment type fan

*** Box 1 (GVS-HC300) ***

-----------------------------------------------------------

 Fan tray 1 (FAN-HC3-001):

 1st fan :                      4593 RPM

 2nd fan :                      4028 RPM

-----------------------------------------------------------

 Fan tray 2 (FAN-HC3-001):

 1st fan :                      4593 RPM

 2nd fan :                      4045 RPM

-----------------------------------------------------------

 Fan tray 3 (FAN-HC3-001):

 1st fan :                      4593 RPM

 2nd fan :                      4028 RPM

-----------------------------------------------------------

 Fan tray 4 (FAN-HC3-001):

 1st fan :                      4615 RPM

 2nd fan :                      4028 RPM

-----------------------------------------------------------

 Fan tray 5 (FAN-HC3-001):

 1st fan :                      4593 RPM

 2nd fan :                      4012 RPM

===========================================================