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EX9200 Host Subsystem

 

Host Subsystem in an EX9200 Switch

Switching and routing functionality, system management, and system control functions of an EX9200 switch are performed by host subsystem. A host subsystem consists of a Routing Engine functioning together with a Switch Fabric.

You can install either one or two host subsystems in the front panel of an EX9204 or an EX9208 switch. A base configuration EX9204 and EX9208 switch has one host subsystem. A redundant configuration EX9204 and EX9208 switch has a second host subsystem.

You can install either two or three host subsystems in the front panel of an EX9214 switch. A base configuration EX9214 switch has two host subsystems. A redundant configuration EX9214 switch has a third host subsystem.

Note

In EX9204 and EX9208 switches, we recommend that you install two host subsystems for redundant protection. If you install only one host subsystem, we recommend that you install it in slot 0. In EX9214 switches, we recommend that you install three host subsystems for redundant protection. If you install only two host subsystems, we recommend that you install it in slot 0 and 1.

Each host subsystem has LEDs in the craft interface that display its status. See Craft Interface in an EX9200 Switch.

Routing Engine Module in an EX9200 Switch

The Routing Engine module (RE module) is an Intel-based platform that runs Juniper Networks Junos operating system (Junos OS). Software processes that run on the RE module maintain the routing tables, manage the routing protocols used on the switch, control the router interfaces and some of the chassis components, and provide the interface for system management and user access to the switch.

In an EX9204, EX9208, or EX9214 switch, you can install one or two RE modules in the Switch Fabric modules (SF modules) that are installed in slots on the front panel of the switch. If you install two RE modules, one functions as the master and the other functions as the backup. If the master RE module fails or is removed and the backup is configured appropriately, the backup takes over as the master. The backup RE module is hot-insertable and hot-removable, whereas the master RE module is only hot-insertable. See Figure 1 and Figure 2. A USB port on the RE module accepts a USB memory card that loads the Junos OS.

Note
  • In EX9214 switches, you must install an RE module only in the SF modules installed in slots 7 and 8 labeled 0 and 1.

  • If you have installed only one RE module, you must power off the switch before removing the RE module.

A base-configuration EX9204, EX9208, or EX9214 switch has only one RE module. See EX9204 Switch Configurations, EX9208 Switch Configurations, and EX9214 Switch Configurations. You can add a second RE module to the configuration for redundancy.

Note

We recommend that you install two RE modules in EX9204, EX9208, and EX9214 switches for redundancy.

The RE module performs the following functions:

  • Provides switching functionality to the switch through the switching plane

  • Powers the line cards on and off

  • Controls system resets and the boot sequence for the switch

  • Monitors and controls the fan speed, power status for various chassis components, and craft interface LEDs

The switch ships with the RE modules preinstalled. There are two copies of the software:

  • One copy on the solid-state drive (SSD) in the RE module.

  • One copy on a USB flash drive that can be inserted into the slot on the RE module faceplate.

The RE module boots from the storage media in the following order: the USB device (if present), then the SSD, and finally the LAN.

Note

Starting with Junos OS Release 17.1R1, EX9200 switches support the EX9200-RE2 module. The EX9200-RE2 module supports virtual machine (VM) architecture in an EX9200 switch. Only the EX9200-SF2 module supports the EX9200-RE2 module. Starting with Junos OS Release 17.1R1, you cannot form a Virtual Chassis using an EX9200 switch.

Caution

The EX9200-RE module and the EX9200-RE2 module are not interoperable. Do not install both the RE modules in the same switch chassis.

Note

Starting with Junos OS Release 16.1, you can use EX9200 switches as an aggregation device in Junos Fusion Enterprise. Starting with Junos OS Release 17.4, you can use EX9200 switches with EX9200-RE2 module installed in it as an aggregation device in Junos Fusion Enterprise. See Understanding Junos Fusion Enterprise Software and Hardware Requirements for the list of line cards that support this configuration.

Figure 1 shows the EX9200-RE module in an EX9200 switch.

Figure 1: EX9200-RE Module in an EX9200 Switch
EX9200-RE Module in an EX9200
Switch

Each EX9200-RE module consists of the following components:

  • Extractor clips—Control the locking system to securely install and remove the EX9200-RE module.

  • AUX port—Connects the EX9200-RE module to a modem or other auxiliary device.

  • CONSOLE port—Connects the EX9200-RE module to a system console through a cable with an RJ-45 connector. See Connecting an EX9200 Switch to a Management Console or an Auxiliary Device.

  • ETHERNET port—Connects the EX9200-RE module through an Ethernet connection to a management LAN (or any other device that plugs into an Ethernet connection) for out-of-band management. See Connecting an EX9200 Switch to a Network for Out-of-Band Management.

  • USB port—Hosts a removable media interface through which you can install the Junos OS manually. See USB Port Specifications for an EX Series Switch.

  • SATA SSD 1 and SATA SSD 2 slots—Host primary storage for software images, configuration files, and microcode. Also provide secondary storage for log files and memory dump files.

  • RESET button—Reboots the EX9200-RE module when pressed.

  • ONLINE/OFFLINE button—Turns the EX9200-RE module online or offline when pressed.

  • Status LEDs—Indicate the status of the EX9200-RE module. Each EX9200-RE module has four LEDs labeled MASTER, STORAGE, ONLINE, and OK/FAIL on the faceplate.

  • Captive screws—Secure the EX9200-RE module in place.



Figure 2 shows the EX9200-RE2 module in an EX9200 switch.

Figure 2: EX9200-RE2 Module in an EX9200 Switch
EX9200-RE2 Module in an EX9200
Switch
  1
Extractor clips
  6
ONLINE/OFFLINE button
  2
Auxiliary port (AUX)
  7
SSD LEDs—DISK1 and DISK2
  3
Console port (CONSOLE)
  8
USB ports—USB1 and USB2
  4
Management port (MGMT)
  9
RESET button
  5
LEDs—ONLINE, OK/FAIL, and MASTER
10
SSD slots—SSD 1 and SSD 2


Each EX9200-RE2 module consists of the following components:

  • Extractor clips—Control the locking system to securely install and remove the EX9200-RE2 module.

  • AUX port—Connects the EX9200-RE2 module to a modem or other auxiliary device.

  • CONSOLE port—Connects the EX9200-RE2 module to a system console through a cable with an RJ-45 connector. See Connecting an EX9200 Switch to a Management Console or an Auxiliary Device.

  • MGMT port—Connects the EX9200-RE2 module through an Ethernet connection to a management LAN (or any other device that plugs into an Ethernet connection) for out-of-band management. See Connecting an EX9200 Switch to a Network for Out-of-Band Management.

  • Status LEDs—Indicate the status of the EX9200-RE2 module. Each EX9200-RE2 module has five LEDs labeled MASTER, ONLINE, OK/FAIL, DISK1, and DISK2 on the faceplate.

  • ONLINE/OFFLINE button—Turns the EX9200-RE2 module online or offline when pressed.

  • USB1 and USB2 ports—Host a removable media interface using which you can install the Junos OS manually. See USB Port Specifications for an EX Series Switch.

  • SSD 1 and SSD 2 slots—Host primary storage for software images, configuration files, and microcode. Also provide secondary storage for log files and memory dump files.

  • RESET button—Reboots the EX9200-RE2 module when pressed.

  • Captive screws—Secure the EX9200-RE2 module in place.

For the specifications of the Routing Engine modules, see Table 1.

Table 1: Routing Engine Module Specifications

RE Module

Processor

Memory

Connection to Packet Forwarding Engines

Disk

Media

First Junos OS Release

EX9200-RE

RE-S-EX9200-1800X4

(4 cores, 1.73 GHz)

16 GB

Gigabit Ethernet

32-  GB hard disk

4-  GB CompactFlash card

12.3R2

EX9200-RE2

RE-S-EX9200-2X00x6

(6 cores, 2 GHz)

64 GB

Gigabit Ethernet

50-  GB SSD X 2

No flash memory

17.1R1

Routing Engine Module LEDs in an EX9200 Switch

Each Routing Engine module (RE module) has LEDs on the module faceplate. Table 2 describes the functions of these LEDs on the EX9200-RE and Table 3 describes the functions of these LEDs on the EX9200-RE2.

Table 2: LEDs on the EX9200-RE Routing Engine Module

LED Label

Status

State and Description

MASTER

Blue

RE module is functioning as the master.

Unlit

RE module is either functioning as the backup or not installed.

STORAGE

Green

Blinking—Indicates activity on the SSD.

ONLINE

Green

  • On steadily—RE module is operating normally.

  • Blinking—RE module is coming online or going offline.

OK/FAIL

Red

RE module has failed.

Table 3: LEDs on the EX9200-RE2 Routing Engine Module

LED Label

Status

State and Description

MASTER

Blue

RE module is functioning as the master.

Unlit

RE module is either functioning as the backup or not installed.

ONLINE

Unlit

The RE is powered off

 

Green

When the RE module is powering on:

  • Blinking slowly (LED is lit for a period of time and is unlit for thrice that period of time that follows, and this pattern is repeated)—RE module is coming online.

  • Blinking fast (LED is lit for a period of time and is unlit for the subsequent same period of time, and this pattern is repeated)—Linux is booted.

  • On steadily (LED glows steadily)—Junos OS is booted.

When the RE module is powering off:

  • Blinking fast (LED is lit for a period of time and is unlit for the subsequent same period of time, and this pattern is repeated)—Junos OS is powering off.

  • Blinking slowly (LED is lit for a period of time and is unlit for thrice that period of time that follows, and this pattern is repeated)—Linux is powering off.

  • Unlit—RE module is powered off.

OK/FAIL

Red

RE module has failed.

DISK1

Green

Blinking—Indicates activity on the SSD.

DISK2

Green

Blinking—Indicates activity on the SSD.

Switch Fabric Module in an EX9200 Switch

The Switch Fabric serves as the central nonblocking matrix through which all network data passes.

Switch Fabric modules (SF modules) are installed horizontally on the front panel of the switch chassis. You can install either one or two SF modules in an EX9204 or EX9208 switch and two or three SF modules in an EX9214 switch. A base-configuration EX9204 or EX9208 switch has only one SF module, and a base-configuration EX9214 switch has two SF modules. See EX9204 Switch Configurations, EX9208 Switch Configurations, or EX9214 Switch Configurations.

In EX9204 and EX9208 switches, you can add a second SF module to the configuration for host subsystem redundancy. In EX9214 switches, you can add a third SF module to the configuration for host subsystem redundancy. If two SF modules are installed, one SF module functions as the master and the other functions as the backup. If the master SF module or its components fails or is removed, the backup module takes the role of master.

The Routing Engine module (RE module) installs directly into a slot on the SF module. The Switch Fabric contains logic that determines which Routing Engine is the master. The master Routing Engine controls many internal functions of the SF module.

The backup SF module is hot-insertable and hot-removable, but the master SF module is only hot-insertable.

The key functions of the Switch Fabric are:

  • Monitor and control system functions

  • Interconnection of all line cards

  • Clocking, system resets, and booting control

  • Routing Engine carrier

Figure 3 shows the original SF module, EX9200-SF.

Figure 3: SF Module EX9200-SF
SF Module EX9200-SF

Starting with Junos OS Release 14.1, a high-speed SF module, EX9200-SF2, is available. Compared to the original SF module, EX9200-SF, the EX9200-SF2 offers increased bandwidth, providing higher-capacity traffic support in settings that require greater interface density (slot and capacity scale).

The EX9200-SF2 supports all EX9200 line cards.

Note

When you upgrade from an EX9200-SF module to an EX9200-SF2 module in an EX9200 switch, the SF module types can coexist in the switch during the upgrade. However, you must replace that EX9200-SF module with another EX9200-SF2 module for normal switch operation. See Upgrading an EX9200-SF to an EX9200-SF2.

Figure 4 shows the high-speed SF module, EX9200-SF2.

Figure 4: SF Module EX9200-SF2
SF Module EX9200-SF2

The SF modules install horizontally into the front of the chassis. If any slots are empty, you must install a cover panel.

The SF module has the following components:

  • Chassis management Ethernet switch

  • I2C bus logic, used for low-level communication with each component

  • Component redundancy circuitry

  • Control Board/Routing Engine mastership mechanism

  • Gigabit Ethernet switch that is connected to the embedded CPU complex on all components

  • Control field-programmable gate array (FPGA)—Provides the Peripheral Component Interconnect (PCI) interface to the Routing Engine

  • 1000Base-T Ethernet controller—Provides a 1-Gbps Ethernet link between the Routing Engines

  • Ethernet switch—Provides 1-Gbps link speeds between the Routing Engine and the line cards

  • External clock interface—Allows BITS or GPS clock source input to the centralized timing circuit, or allows centralized timing to be output to BITS or GPS

  • Circuits for chassis management and control

  • Power circuits for the Routing Engine and the Switch Fabric

  • SF module LEDs—Indicate system status. (See Switch Fabric Module LEDs in an EX9200 Switch).

  • Ejector levers—Used for installing and removing the SF module

  • Captive screws—Secure the SF module in place

Switch Fabric Module LEDs in an EX9200 Switch

The Switch Fabric module (SF module) has three LEDs on the module faceplate. Table 4 describes the functions of these LEDs.

Table 4: SF Module LEDs of an EX9200 Switch

LED

Status

Description

FABRIC ACTIVE

Green

Switch Fabric is in active mode.

Unlit

Switch Fabric is offline.

FABRIC ONLY

Green

On steadily—Switch Fabric is operating in fabric-only mode.

Unlit

Switch Fabric is not operating in fabric-only mode.

OK/FAIL

Green

Switch Fabric is online.

Red

Switch Fabric has failed.

Unlit

Switch Fabric is offline.

The BITS, GPS, and UTI LEDs, located next to the EXT CLK port, indicate the status of the respective clocking interface. These LEDs are not supported.