SRX5400 Chassis
SRX5400 Services Gateway Chassis
The services gateway chassis is a rigid sheet metal structure that houses all the other components (see Figure 1, Figure 2, and Figure 3). The chassis measures 8.71 in. (22.1 cm) high, 17.45 in. (44.3 cm) wide, and 24.5 in. (62.2 cm) deep (from the front to the rear of the chassis). The chassis installs in standard 800-mm (or larger) enclosed cabinets, 19-in. equipment racks, or telco open-frame racks. Up to five services gateways can be installed in one standard (48 U) rack if the rack can handle their combined weight, which can be greater than 1100 lb (500 kg). See SRX5400 Services Gateway Physical Specifications for physical specifications for the SRX5400 Services Gateway.
Before removing or installing components of a services gateway, attach an ESD strap to an ESD point and place the other end of the strap around your bare wrist. Failure to use an ESD strap can result in damage to the services gateway.
The services gateway must be connected to earth ground during normal operation.
SRX5400 Services Gateway Physical Specifications
Table 1 summarizes the physical specifications for the services gateway chassis.
Table 1: Physical Specifications
Description | Value |
|---|---|
Chassis dimensions | 8.7 in. (22.1 cm) high 17.45 in. (44.3 cm) wide 24.5 in. (62.2 cm) deep (from front-mounting bracket to chassis rear) Total depth (including cable management system): 27.75 in. (70.5 cm) |
Services gateway weight | Chassis with midplane, fan tray, air filter, and cable management system: 52 lb (23.6 kg) Maximum configuration: 128 lb (58.1 kg) |
Routing Engine weight | SRX5K-RE-13-20: 2.4 lb (1.1 kg) SRX5K-RE-1800X4: 2.4 lb (1.1 kg) |
SCB weight | SRX5K-SCB: 9.6 lb (4.4 kg) SRX5K-SCBE: 9.6 lb (4.4 kg) SRX5K-SCB3: 10.14 lb (4.6 kg) |
MPC weight (with two MICs) | 13.1 lb (5.9 kg) |
Craft interface weight | 1.1 lb (0.5 kg) |
Fan tray weight | 4.2 lb (1.9 kg) |
Air filter weight | 1.0 lb (0.5 kg) |
Cable management weight | 0.3 lb (0.14 kg) |
High-capacity DC power supply weight | 6.2 lb (2.8 kg) |
High-capacity AC power supply weight | 6.6 lb (3.0 kg) |
SRX5400 Services Gateway Midplane Description
The midplane is located toward the rear of the chassis and forms the rear of the card cage. MPCs, SPCs, and SCB install into the midplane from the front of the chassis, and the power supplies install into the midplane from the rear of the chassis. The cooling system components also connect to the midplane.
The midplane performs the following major functions:
Data path—Data packets are transferred across the midplane between the MPCs and SPCs through the fabric ASICs on the SCB.
Power distribution—The power supplies are connected to the midplane, which distributes power to all the services gateway components.
Signal path—The midplane provides the signal path to the MPCs, SCB, SPCs, Routing Engine, and other system components for monitoring and control of the system.
The enhanced midplane supports Junos OS Release 15.1X49-D10. It provides greater per-slot fabric performance and signal integrity, along with error-free high speed data transfer, and it reduces cross-talk. The midplane supports link speeds up to 10 Gbps and is not field replaceable.
SRX5400 Services Gateway Craft Interface Overview
The craft interface shows you status and troubleshooting information at a glance and lets you perform many system control functions. It is hot-insertable and hot-removable. The craft interface is located on the front of the services gateway above the upper fan tray.
Figure 4 shows the front panel of the craft interface and Table 2 describes the components on the front panel.
Table 2: Front Panel of the Craft Interface
Component | Description | Reference |
|---|---|---|
1 | Routing Engine LEDs | See SRX5400 Services Gateway Craft Interface Host Subsystem LEDs |
2 | Fan LEDs | |
3 | PEM LEDs | See SRX5400 Services Gateway Craft Interface Power Supply LEDs |
4 | Minor alarm LED | See SRX5400 Services Gateway Craft Interface Alarm LEDs and Alarm Cutoff/Lamp Test Button |
5 | Major alarm LED | |
6 | Alarm cutoff button | |
7 | Alarm relay contacts | See SRX5400 Services Gateway Craft Interface Alarm Relay Contacts |
8/9 | SCB and MPC LEDs, and MPC online/offline buttons The card LEDs are located along the bottom edge of the craft
interface and are labeled | See SRX5400 Services Gateway Craft Interface Card OK/Fail LEDs See SRX5400 Services Gateway Craft Interface Online/Offline Buttons |
The SCB must be installed in the services gateway for the craft interface to obtain power.
SRX5400 Services Gateway Craft Interface Alarm LEDs and Alarm Cutoff/Lamp Test Button
Two large alarm LEDs are located at the upper right of the craft interface. The circular red LED lights to indicate a major alarm condition that can result in a system shutdown. The triangular yellow LED lights to indicate a less severe minor alarm condition that requires monitoring or maintenance. Both LEDs can be lit simultaneously. A condition that causes an LED to light also activates the corresponding alarm relay contact on the craft interface.
To deactivate the major and minor alarms, press the button labeled ACO/LT (for “alarm cutoff/lamp test”), which
is located to the right of the alarm LEDs. Deactivating an alarm turns
off both LEDs and deactivates the device attached to the corresponding
alarm relay contact on the craft interface.
Table 3 describes the alarm LEDs and alarm cutoff button in more detail.
Table 3: Alarm LEDs and Alarm Cutoff/Lamp Test Button
Shape | Label | Color | State | Description |
|---|---|---|---|---|
 | Major Alarm | Red | On steadily | Critical alarm LED—Indicates a critical condition that can cause the device to stop functioning. Possible causes include component removal, failure, or overheating. |
 | Minor Alarm | Yellow | On steadily | Warning alarm LED—Indicates a serious but nonfatal error condition, such as a maintenance alert or a significant increase in component temperature. |
 | ACO/LT | – | – | Alarm cutoff/lamp test button—Deactivates major and minor alarms. Causes all LEDs on the craft interface to light (for testing) when pressed and held. |
SRX5400 Services Gateway Craft Interface Host Subsystem LEDs
The host subsystem
has three LEDs, located on the upper left of the craft interface,
that indicate its status. The LEDs labeled RE0 show the status of the Routing Engine and SCB in slot 0 . The LEDs labeled RE1 are disabled
and have no function. Table 4 describes the functions of the host subsystem LEDs.
Table 4: Host Subsystem LEDs
Label | Color | State | Description |
|---|---|---|---|
| Green | On steadily | Host is functioning as the primary. |
| Green | On steadily | Host is online and is functioning normally. |
| Red | On steadily | Host is installed but the Routing Engine is offline. |
Off | Host is not installed. |
SRX5400 Services Gateway Craft Interface Power Supply LEDs
Each power supply has
two LEDs on the craft interface that indicate its status. The LEDs,
labeled 0 through 3, are
located near the middle of the craft interface next to the PEM label. Table 5 describes
the functions of the power supply LEDs on the craft interface.
Table 5: Power Supply LEDs on the Craft Interface
Label | Color | State | Description |
|---|---|---|---|
| Green | On steadily | Power supply is functioning normally. |
Red | On steadily | Power supply has failed or power input has failed. |
SRX5400 Services Gateway Craft Interface Card OK/Fail LEDs
Each slot in the card cage has a pair of LEDs on the
craft interface that indicates the status of the card installed in
it. The card LEDs are located along the bottom edge of the craft interface
and are labeled 0 for the bottom slot reserved
for the SCB and 0/1, 1,
and 2 for the remaining slots.Table 6 describes the functions of the OK and Fail LEDs.
Table 6: Card OK/Fail LEDs
Label | Color | State | Description |
|---|---|---|---|
| Green | On steadily | The card is functioning normally. |
Blinking | The card is transitioning online or offline. | ||
Off | The card is not online. | ||
| Red | On steadily | The card has failed. |
SRX5400 Services Gateway Craft Interface Fan LEDs
The fan tray LED are located near the middle of the craft interface. Table 7 describes the functions of the fan tray LEDs.
Table 7: Fan LEDs
Label | Color | State | Description |
|---|---|---|---|
| Green | On steadily | Fan tray is functioning normally. |
| Red | On steadily | Fan tray has failed. |
SRX5400 Services Gateway Craft Interface Online/Offline Buttons
The craft interface has a row of Online/Offline buttons along its lower edge. Each button corresponds to one slot in the card cage. The Online/Offline buttons are only supported for slots containing MPC interface cards. You can install MPCs into slots:
SRX5400–Any slot except bottom slot
0SRX5600–Any slot except bottom slots
0or1SRX5800–Any slot except center slots
0or1
The Online/Offline buttons are not supported for removal and replacement of SPCs or SCB.
While traffic is passing through the Services Gateway, particularly if the device is configured as part of a high availability (HA) cluster, we strongly recommend that you do not push any of the Online/Offline buttons.
To take an MPC offline using the Online/Offline buttons:
- Press and hold the corresponding card’s Online/Offline
button on slot
1on the craft interface. The greenOK/FAILLED next to the button begins to blink. Hold until both the button’s LED and the MPC’s LED are off. - Issue the CLI show chassis fpc command
to check the status of installed MPCs. As shown in the sample output,
the value Offline in the column labeled State indicates that the MPC in slot
1is now offline:user@host> show chassis fpc
Slot State (C) Total Interrupt DRAM (MB) Heap Buffer 0 Online 35 4 0 1024 13 25 1 Online 47 3 0 1024 13 25 2 Online 37 8 0 2048 18 14An MPC can also be taken offline via CLI command:
user@host> request chassis fpc slot 2 offlinenode0: -------------------------------------------------------------------------- Offline initiated, use "show chassis fpc" to verify {primary:node0}user@host> show chassis fpcnode0: -------------------------------------------------------------------------- Temp CPU Utilization (%) Memory Utilization (%) Slot State (C) Total Interrupt DRAM (MB) Heap Buffer 0 Online 35 7 0 1024 13 25 1 Online 46 4 0 1024 13 25 2 Offline ---Offlined by cli command--- After pushing MPC online button:user@host> show chassis fpcTemp CPU Utilization (%) Memory Utilization (%) Slot State (C) Total Interrupt DRAM (MB) Heap Buffer 0 Online 34 5 0 1024 13 25 1 Online 46 3 0 1024 13 25 2 Offline ---Offlined by button press---
To bring an MPC back online using the Online/Offline buttons:
- Press and hold the corresponding card’s Online/Offline
button on slot
1on the craft interface. The greenOK/FAILLED next to the button and the MPC’s LED begins to blink. Hold until both the button’s LED and the MPC’s LED are green and steady. - Issue the CLI show chassis fpc command
to check the status of installed MPCs. As shown in the sample output,
the value Online in the column labeled State indicates that the MPC in slot
1is functioning normally:Verify if the MPC is offline:
user@host> show chassis fpcnode0: -------------------------------------------------------------------------- Temp CPU Utilization (%) Memory Utilization (%) Slot State (C) Total Interrupt DRAM (MB) Heap Buffer 0 Online 37 23 0 2048 19 14 1 Offline ---Offlined by cli command--- 2 Online 49 37 0 1024 14 25The command output indicates the MPC is offline.
Bring the MPC online for the first time by using the following CLI command:
user@host> request chassis fpc slot 1 onlinenode0: -------------------------------------------------------------------------- Online initiated, use "show chassis fpc" to verify
Verify that the MPC is online:
user@host> request chassis fpc slot 1 online node 0node0: -------------------------------------------------------------------------- FPC 1 already online
The command output indicates the MPC is online.
Confirm that the MPC in the chassis is online:
user@host> show chassis fpcnode0: -------------------------------------------------------------------------- Temp CPU Utilization (%) Memory Utilization (%) Slot State (C) Total Interrupt DRAM (MB) Heap Buffer 0 Online 37 6 0 2048 19 14 1 Online 44 11 0 1024 23 29 2 Online 49 22 0 1024 14 25
SRX5400 Services Gateway Craft Interface Alarm Relay Contacts
The craft interface has two alarm relay contacts for connecting the device to external alarm devices (see Figure 5). Whenever a system condition triggers either the major or minor alarm on the craft interface, the alarm relay contacts are also activated. The alarm relay contacts are located on the upper right of the craft interface.
The alarm relay contacts consist of two sets of connectors, one set for each of the two alarms (major and minor). For each alarm color there are three connectors. Table 8 describes the functions of the connectors.
Table 8: Alarm Relay Contact Functions
Contact Label | Contact Name | Function |
|---|---|---|
| Normally Closed | Connects the alarm relay to an external alarm-reporting device that activates when the circuit between C and NC is closed. |
| Current In | Connects the alarm relay to the current source for the external alarm-reporting device. |
| Normally Open | Connects the alarm relay to an external alarm-reporting device that activates when the circuit between C and NC is open. |
Table 9 shows the electrical specifications for the alarm relay contacts.
Table 9: Alarm Relay Contact Electrical Specifications
Current Type | ||
|---|---|---|
AC | DC | |
Maximum Voltage | 250 | 30 |
Maximum Current | 8 A | |
Figure 6 shows an example wiring diagram for a simple alarm reporting device. In this case the device is a 12-volt light bulb that illuminates when the device encounters a condition that activates the major alarm LED and relay contacts. The alarm relay contacts can also be used to activate other devices such as bells or buzzers.
