MX10016 Cooling System
The MX10016 cooling system components work together to keep all components within the acceptable temperature range. If the maximum temperature specification is exceeded and the system cannot be adequately cooled, the Routing and Control Board shuts down some or all of the hardware components. For more information, see the following topics:
MX10016 Cooling System and Airflow
The cooling system in an MX10016 chassis consists of two fan trays and two fan tray controllers. An MX10016 has an air filter on the front panel. Two fan tray models (JNP10016-FAN and JNP10016-FAN2) and their associated fan tray controllers (JNP10016-FAN-CTRL and JNP10016-FTC2) are available. The JNP10016-FAN fans in each JNP10016-FAN-CTRL fan tray are numbered 0 through 20. The JNP10016-FAN2 fans in each JNP10016-FTC2 fan tray are numbered 0 through 41.
All models are hot-insertable and hot-removable. See MX10016 Cooling System and Airflow.
|
Specification |
JNP10016-FAN |
JNP10016-FAN2 |
|---|---|---|
|
Corresponding fan tray controller model |
JNP10016-FAN-CTLR |
JNP10016-FTC2 |
|
Number of fans per fan tray |
21 |
42 |
|
Number of fans per chassis |
42 |
84 |
|
Volume flow at 100% |
130.67 CFM per fan or 2,744.07 CFM per fan tray |
163 CFM per fan or 3,423 CFM per fan tray |
|
Introduced in Junos OS Release |
15.1X53-D30 |
19.2R1-S1 |
|
Height |
36.6 in. (92.97 cm) |
36.5 in. (92.97 cm) |
|
Width |
6.6 in. (16.8 cm) |
6.6 in. (16.8 cm) |
|
Depth |
4.0 in. (10.2 cm) without handles, 5.2 in. (13.2 cm) with handles |
5.5 in. (13.97 cm) without handles, 6.7 in. (17.01 cm) |
|
Weight |
19.8 lb (8.98 kg) |
33.8 lb (15.33 kg) |
The JNP10016-FAN2 and JNP10016-FAN2-CTRL are optimized to work best in the enhanced chassis, but are backwards compatible to work in the standard chassis. To determine which chassis you have, see MX10016 Status Panel LEDs.
MX10016 Fan Trays
Each fan tray is a hot-insertable and hot-removable FRU. Each fan tray has a non-removable Control Board, and LEDs.
The two fan trays install vertically, side by side, next to the power supplies on the rear side of the chassis. Two handles on each front faceplate facilitate handling of the fan tray. See Figure 1 and Figure 2 .
If you want to replace an existing fan tray while the router is running, remove only one fan tray. The router continues to operate for a limited time with a single operating fan tray without triggering a thermal alarm.
To avoid a thermal alarm, do not remove both fan trays while the router is operating.
The chassis will shut down if a thermal alarm is raised for more than 3 minutes.
The internal fan control board in each fan tray contains LEDs for the associated fan tray controllers and LEDs for the three SFBs directly behind the fan tray.
MX10016 Fan Tray Controllers
Two fan tray controllers provide the control logic and power to hot-insert and hot-remove a fan tray. The fans in each fan tray are numbered 0 through 20.
The system continually monitors the temperature of critical parts across the chassis and adjusts the chassis fan speed according to the temperature.
There are two fan tray controller models:
-
JNP10016-FAN-CTRL—Supports the model JNP10016-FAN. See Figure 3.
Figure 3: Fan Tray Controller JNP10016-FAN-CTRL
-
JNP10016-FTC2—Supports the model JNP10016-FAN2. See Figure 4.
Figure 4: Fan Controller JNP10016-FTC2
Software controls the fan speed.
Under
normal operating conditions, the fans in the fan tray run at less than
full speed.If one fan tray controller fails or
appears missing (such as when an SFB is being replaced), the other fan
tray controller sets the fans to full speed. This enables the router
to continue to operate normally as long as the remaining fans cool the
chassis sufficiently. Use the show chassis fan
command to see the status of individual fans and the fan speed.
Output for JNP10016-FAN and JNP10016-FAN-CTRL
user@device> show chassis fan
Item Status RPM Measurement
Fan Tray 0 Fan 0 OK 7950 Spinning at normal speed
Fan Tray 0 Fan 1 OK 7800 Spinning at normal speed
Fan Tray 0 Fan 2 OK 7800 Spinning at normal speed
Fan Tray 0 Fan 3 OK 7950 Spinning at normal speed
Fan Tray 0 Fan 4 OK 7650 Spinning at normal speed
Fan Tray 0 Fan 5 OK 7650 Spinning at normal speed
Fan Tray 0 Fan 6 OK 7650 Spinning at normal speed
Fan Tray 0 Fan 7 OK 7650 Spinning at normal speed
Fan Tray 0 Fan 8 OK 7650 Spinning at normal speed
Fan Tray 0 Fan 9 OK 7650 Spinning at normal speed
Fan Tray 0 Fan 10 OK 7650 Spinning at normal speed
Fan Tray 0 Fan 11 OK 7650 Spinning at normal speed
Fan Tray 0 Fan 12 OK 7800 Spinning at normal speed
Fan Tray 0 Fan 13 OK 7650 Spinning at normal speed
Fan Tray 0 Fan 14 OK 7650 Spinning at normal speed
Fan Tray 0 Fan 15 OK 7650 Spinning at normal speed
Fan Tray 0 Fan 16 OK 7650 Spinning at normal speed
Fan Tray 0 Fan 17 OK 7650 Spinning at normal speed
Fan Tray 0 Fan 18 OK 7800 Spinning at normal speed
Fan Tray 0 Fan 19 OK 7650 Spinning at normal speed
Fan Tray 0 Fan 20 OK 7650 Spinning at normal speed
Fan Tray 1 Fan 0 OK 7650 Spinning at normal speed
Fan Tray 1 Fan 1 OK 7650 Spinning at normal speed
Fan Tray 1 Fan 2 OK 7650 Spinning at normal speed
Fan Tray 1 Fan 3 OK 7650 Spinning at normal speed
Fan Tray 1 Fan 4 OK 7800 Spinning at normal speed
Fan Tray 1 Fan 5 OK 7650 Spinning at normal speed
Fan Tray 1 Fan 6 OK 7800 Spinning at normal speed
Fan Tray 1 Fan 7 OK 7650 Spinning at normal speed
Fan Tray 1 Fan 8 OK 7800 Spinning at normal speed
Fan Tray 1 Fan 9 OK 7650 Spinning at normal speed
Fan Tray 1 Fan 10 OK 7650 Spinning at normal speed
Fan Tray 1 Fan 11 OK 7500 Spinning at normal speed
Fan Tray 1 Fan 12 OK 7650 Spinning at normal speed
Fan Tray 1 Fan 13 OK 7650 Spinning at normal speed
Fan Tray 1 Fan 14 OK 7650 Spinning at normal speed
Fan Tray 1 Fan 15 OK 7500 Spinning at normal speed
Fan Tray 1 Fan 16 OK 7650 Spinning at normal speed
Fan Tray 1 Fan 17 OK 7500 Spinning at normal speed
Fan Tray 1 Fan 18 OK 7500 Spinning at normal speed
Fan Tray 1 Fan 19 OK 7500 Spinning at normal speed
Fan Tray 1 Fan 20 OK 7500 Spinning at normal speed Output for JNP10016-FAN2 and JNP10016-FTC2
user@router> show chassis fan
Item Status RPM Measurement
Fan Tray 0 Fan 0 OK 3900 Spinning at normal speed
Fan Tray 0 Fan 1 OK 5250 Spinning at normal speed
Fan Tray 0 Fan 2 OK 3750 Spinning at normal speed
Fan Tray 0 Fan 3 OK 5100 Spinning at normal speed
Fan Tray 0 Fan 4 OK 3900 Spinning at normal speed
Fan Tray 0 Fan 5 OK 5250 Spinning at normal speed
Fan Tray 0 Fan 6 OK 3750 Spinning at normal speed
Fan Tray 0 Fan 7 OK 5100 Spinning at normal speed
Fan Tray 0 Fan 8 OK 3750 Spinning at normal speed
Fan Tray 0 Fan 9 OK 5250 Spinning at normal speed
Fan Tray 0 Fan 10 OK 3750 Spinning at normal speed
Fan Tray 0 Fan 11 OK 5100 Spinning at normal speed
Fan Tray 0 Fan 12 OK 3750 Spinning at normal speed
Fan Tray 0 Fan 13 OK 5100 Spinning at normal speed
Fan Tray 0 Fan 14 OK 3600 Spinning at normal speed
Fan Tray 0 Fan 15 OK 5250 Spinning at normal speed
Fan Tray 0 Fan 16 OK 3750 Spinning at normal speed
Fan Tray 0 Fan 17 OK 5100 Spinning at normal speed
Fan Tray 0 Fan 18 OK 3750 Spinning at normal speed
Fan Tray 0 Fan 19 OK 5100 Spinning at normal speed
Fan Tray 0 Fan 20 OK 3750 Spinning at normal speed
Fan Tray 0 Fan 21 OK 4950 Spinning at normal speed
Fan Tray 0 Fan 22 OK 3750 Spinning at normal speed
Fan Tray 0 Fan 23 OK 5100 Spinning at normal speed
Fan Tray 0 Fan 24 OK 3900 Spinning at normal speed
Fan Tray 0 Fan 25 OK 5100 Spinning at normal speed
Fan Tray 0 Fan 26 OK 3750 Spinning at normal speed
Fan Tray 0 Fan 27 OK 5100 Spinning at normal speed
Fan Tray 0 Fan 28 OK 3750 Spinning at normal speed
Fan Tray 0 Fan 29 OK 4950 Spinning at normal speed
Fan Tray 0 Fan 30 OK 3750 Spinning at normal speed
Fan Tray 0 Fan 31 OK 4950 Spinning at normal speed
Fan Tray 0 Fan 32 OK 3600 Spinning at normal speed
Fan Tray 0 Fan 33 OK 4950 Spinning at normal speed
Fan Tray 0 Fan 34 OK 3600 Spinning at normal speed
Fan Tray 0 Fan 35 OK 4950 Spinning at normal speed
Fan Tray 0 Fan 36 OK 3600 Spinning at normal speed
Fan Tray 0 Fan 37 OK 4950 Spinning at normal speed
Fan Tray 0 Fan 38 OK 3600 Spinning at normal speed
Fan Tray 0 Fan 39 OK 4950 Spinning at normal speed
Fan Tray 0 Fan 40 OK 3450 Spinning at normal speed
Fan Tray 0 Fan 41 OK 4950 Spinning at normal speed
Fan Tray 1 Fan 0 OK 3900 Spinning at normal speed
Fan Tray 1 Fan 1 OK 5100 Spinning at normal speed
Fan Tray 1 Fan 2 OK 3750 Spinning at normal speed
Fan Tray 1 Fan 3 OK 5250 Spinning at normal speed
Fan Tray 1 Fan 4 OK 3900 Spinning at normal speed
Fan Tray 1 Fan 5 OK 5250 Spinning at normal speed
Fan Tray 1 Fan 6 OK 3900 Spinning at normal speed
Fan Tray 1 Fan 7 OK 5250 Spinning at normal speed
Fan Tray 1 Fan 8 OK 3750 Spinning at normal speed
Fan Tray 1 Fan 9 OK 5100 Spinning at normal speed
Fan Tray 1 Fan 10 OK 3900 Spinning at normal speed
Fan Tray 1 Fan 11 OK 5100 Spinning at normal speed
Fan Tray 1 Fan 12 OK 3750 Spinning at normal speed
Fan Tray 1 Fan 13 OK 5100 Spinning at normal speed
Fan Tray 1 Fan 14 OK 3750 Spinning at normal speed
Fan Tray 1 Fan 15 OK 5250 Spinning at normal speed
Fan Tray 1 Fan 16 OK 3750 Spinning at normal speed
Fan Tray 1 Fan 17 OK 5250 Spinning at normal speed
Fan Tray 1 Fan 18 OK 3750 Spinning at normal speed
Fan Tray 1 Fan 19 OK 5100 Spinning at normal speed
Fan Tray 1 Fan 20 OK 3750 Spinning at normal speed
Fan Tray 1 Fan 21 OK 5100 Spinning at normal speed
Fan Tray 1 Fan 22 OK 3750 Spinning at normal speed
Fan Tray 1 Fan 23 OK 4950 Spinning at normal speed
Fan Tray 1 Fan 24 OK 3750 Spinning at normal speed
Fan Tray 1 Fan 25 OK 4950 Spinning at normal speed
Fan Tray 1 Fan 26 OK 3600 Spinning at normal speed
Fan Tray 1 Fan 27 OK 4950 Spinning at normal speed
Fan Tray 1 Fan 28 OK 3750 Spinning at normal speed
Fan Tray 1 Fan 29 OK 5100 Spinning at normal speed
Fan Tray 1 Fan 30 OK 3750 Spinning at normal speed
Fan Tray 1 Fan 31 OK 4950 Spinning at normal speed
Fan Tray 1 Fan 32 OK 3750 Spinning at normal speed
Fan Tray 1 Fan 33 OK 4950 Spinning at normal speed
Fan Tray 1 Fan 34 OK 3600 Spinning at normal speed
Fan Tray 1 Fan 35 OK 4950 Spinning at normal speed
Fan Tray 1 Fan 36 OK 3600 Spinning at normal speed
Fan Tray 1 Fan 37 OK 4950 Spinning at normal speed
Fan Tray 1 Fan 38 OK 3750 Spinning at normal speed
Fan Tray 1 Fan 39 OK 4950 Spinning at normal speed
Fan Tray 1 Fan 40 OK 3600 Spinning at normal speed
Fan Tray 1 Fan 41 OK 4800 Spinning at normal speedTwo fan tray controller models and their associated fan trays are available. All models are hot-insertable and hot-removable. See Table 2.
Specification |
JNP10016-FAN-CTRL |
JNP10016-FTC2 |
|---|---|---|
Corresponding fan tray model |
JNP10016-FAN |
JNP10016-FAN2 |
Chassis supported |
Standard |
Enhanced or standard |
Introduced in Junos OS Release |
15.1X53-D30 |
19.2R1 |
Height |
1.5 in. (3.81 cm) |
1.5 in. (3.81 cm) |
Width |
6.5 in. (15.24 cm) |
6.5 in. (15.24 cm) |
Depth |
9.3 in. (23.62 cm) |
9.4 in. (23.88 cm) |
Weight |
1.5 lb (0.68 kg) |
2.3 lb (1.04 cm) |
Airflow Direction in an MX10016
The air intake to cool the chassis is located on the port (line card) side of the chassis. Air flows into the chassis from the ports in the Control Boards and line cards, through the Switch Fabric Boards (SFBs), and exits from the fan trays and the power supplies. This airflow is called port-to-FRU cooling or airflow out (AFO). See Figure 5.
The fan tray continues to operate indefinitely and provides sufficient cooling even when a single fan fails, provided the room temperature is within the operating range. You can check the status of the fans by viewing the LEDs on each fan tray. See MX10016 Fan Tray LEDs and Fan Tray Controller LEDs.
You cannot replace a single fan. If one or more fans fail, you must replace the entire fan tray.
In addition to the fan trays, there is an internal fan in each power supply.
MX10016 Fan Tray LEDs and Fan Tray Controller LEDs
Each fan tray has a set of LEDs, and each corresponding fan tray controller also has a set of LEDs. This topic covers:
MX10016 Fan Tray LEDs
Each of the two fan trays have a set of LEDs that represent the status of the fans in the fan tray, the fan tray controller, and the three Switch Fabric Boards (SFBs). The fan tray LEDs are located in the top-left corner of each fan tray. Figure 6 shows the location of the LEDs on the fan tray.
1 — Fan status LED | 3 — SFB status (SFB 0 through SFB 2 for the left fan tray and SFB
3 through 5 for the right fan tray) |
2 — Fan tray controller status |
Table 3 describes the functions of the fan tray LEDs.
Name |
Color |
State |
Description |
|---|---|---|---|
Fan status |
Green |
On steadily |
All fans are operating normally. The system has verified that the fan tray is engaged, that the airflow is in the correct direction, and that all fans are operating correctly. |
Green |
Blinking |
The beacon feature is enabled. This feature is enabled using
the |
|
Yellow |
Blinking |
An error has been detected in one or more fans in the fan tray. Replace the fan tray as soon as possible. Either the fan has failed or it has become disconnected. To maintain proper airflow through the chassis, leave the fan tray installed in the chassis until you are ready to replace it. |
|
None |
Off |
The fan is not receiving power from the fan tray controller. |
|
Fan tray controller status |
Green |
On steadily |
The fan tray controller is online and is operating normally. |
Green |
Blinking |
The beacon feature is enabled. This feature is enabled using
the |
|
Yellow |
Blinking |
An error has been detected in the fan tray controller. Replace the fan tray controller as soon as possible. The fan tray controller is located behind the fan tray above the SIBs. To maintain proper airflow through the chassis, leave the fan tray installed in the chassis until you are ready to replace the fan tray controller. |
|
None |
Off |
The fan tray controller is not receiving power. |
|
SFB 0 status |
Green |
On steadily |
The leftmost SFB behind the left fan tray is online. |
Green |
Blinking |
The beacon feature is enabled. This feature is enabled using
the |
|
Yellow |
Blinking |
An error has been detected in SFB 0. Replace the SFB as soon as possible. The SFB is located behind the left fan tray and is the left-most SFB in the chassis. To maintain proper airflow through the chassis, leave the fan tray installed in the chassis until you are ready to replace the SFB. |
|
None |
Off |
The SFB is offline. |
|
SFB 1 status |
Green |
On steadily |
The center SFB behind the left fan tray is online. |
Green |
Blinking |
The beacon feature is enabled. This feature is enabled using
the |
|
Yellow |
Blinking |
An error has been detected in SFB 1. Replace the SFB as soon as possible. The SFB is located behind the left fan tray and is the middle SFB in the grouping of 3. To maintain proper airflow through the chassis, leave the fan tray installed in the chassis until you are ready to replace the SFB. |
|
None |
Off |
The SFB is offline. |
|
SFB 2 status |
Green |
On steadily |
The rightmost SFB behind the left fan tray is online. |
Green |
Blinking |
The beacon feature is enabled. This feature is enabled using
the |
|
Yellow |
Blinking |
An error has been detected in SFB 2. Replace the SFB as soon as possible. The SFB is located behind the left fan tray and is the rightmost SFB in the grouping of 3. To maintain proper airflow through the chassis, leave the fan tray installed in the chassis until you are ready to replace the SFB. |
|
None |
Off |
The SFB is offline. |
|
SFB 3 status |
Green |
On steadily |
The left-most SFB behind the right fan tray is online. |
Green |
Blinking |
The beacon feature is enabled. This feature is enabled using
the |
|
Yellow |
Blinking |
An error has been detected in SFB 3. Replace the SFB as soon as possible. The SFB is located behind the right fan tray and is the leftmost SFB in the grouping of 3. To maintain proper airflow through the chassis, leave the fan tray installed in the chassis until you are ready to replace the SFB. |
|
None |
Off |
The SFB is offline. |
|
SFB 4 status |
Green |
On steadily |
The center SFB behind the right fan tray is online. |
Green |
Blinking |
The beacon feature is enabled. This feature is enabled using
the |
|
Yellow |
Blinking |
An error has been detected in SFB 4. Replace the SFB as soon as possible. The SFB is located behind the right fan tray and is the middle SFB in the grouping of 3. To maintain proper airflow through the chassis, leave the fan tray installed in the chassis until you are ready to replace the SFB. |
|
None |
Off |
The SFB is offline. |
|
SFB 5 status |
Green |
On steadily |
The right-most SFB behind the right fan tray is online. |
Green |
Blinking |
The beacon feature is enabled. This feature is enabled using
the |
|
Yellow |
Blinking |
An error has been detected in SFB 5. Replace the SFB as soon as possible. The SFB is located behind the right fan tray and is the right-most SFB in the grouping of 3. To maintain proper airflow through the chassis, leave the fan tray installed in the chassis until you are ready to replace the SFB. |
|
None |
Off |
The SFB is offline. |
MX10016 Fan Tray Controller LEDs
The fan tray controller LEDs are only visible when the associated fan tray is removed. The fan tray controller LEDs are located on the right of the controller panel. See Figure 7.
1 — Fan tray controller power | 2 — Fan tray controller status |
Table 4 describes the functions of the fan tray controller LEDs.
Name |
Color |
State |
Description |
|---|---|---|---|
Fan controller power |
Green |
On steadily |
The fan tray controller has power and is operating normally. |
Yellow |
Blinking |
A power error has been detected in the fan tray controller. Replace the fan tray controller as soon as possible. To maintain proper airflow through the chassis, leave the fan tray installed in the chassis until you are ready to replace the fan tray controller. |
|
None |
Off |
The fan tray controller is not powered on or is not receiving power. |
|
Fan tray controller status |
Green |
On steadily |
The fan tray controller is online and is operating normally. |
Green |
Blinking |
The beacon feature is enabled. This feature is enabled using
the |
|
Yellow |
Blinking |
An error has been detected in the fan tray controller. Replace the fan tray controller as soon as possible. To maintain proper airflow through the chassis, leave the fan tray installed in the chassis until you are ready to replace the fan tray controller. |
|
None |
Off |
The fan tray controller is not receiving power. |