EX4600 Chassis

The EX4600 switch chassis is a rigid sheet-metal structure that houses the hardware components. Table 1 summarizes the physical specifications of the EX4600 chassis.

Field-replaceable units (FRUs) are components that you can replace at your site. The EX4600 switch FRUs are hot-insertable and hot-removable: you can remove and replace one of them without powering off the switch or disrupting the switching function. FRU types are:

• Power supplies

• Fan modules

• Optical transceivers

• Expansion modules

Table 2 lists the FRUs for the EX4600 switch and actions to take before removing them.

The fixed portion of the port panel of the EX4600-40F switch supports up to a maximum of 40 logical 10 GbE ports. Twenty-four physical ports (0 through 23) support 10 Gbps small form-factor pluggable plus (SFP+) transceivers. These ports can be configured as access ports. See The Hardware Compatibility Tool for a list of supported transceivers. All 24 of these ports can be used for SFP+ transceivers or SFP+ direct attach copper (DAC) cables. You can use 1-Gigabit Ethernet SFP+ transceivers, 10-Gigabit Ethernet SFP+ transceivers, and SFP+ direct attach copper cables in any access port.

The remaining 16 logical ports are available for four 40 GbE ports (24 through 27) that support up to four quad small-form factor pluggable plus (QSFP+) transceivers. Each QSFP+ port can operate either as a single 40 Gbps port or as a set of 4 independent 10 Gbps ports using QSFP+ breakout cables. The 40 GbE ports can be configured as either access ports or as uplinks. .

Figure 1 shows the port panel of an EX4600 switch.

Figure 1: EX4600 Switch Port Panel

1 — Electrostatic Discharge (ESD) terminal	3 — 40 GbE ports (4)
2 — 10 G ports (24)	4 — Expansion module bays with cover panels (2)

The Link/Activity and Status LED configuration for an EX4600 switch uses bi-colored LEDs. The two figures in this topic show the location of those LEDs:

• Figure 2 shows the location of the LEDs on the SFP+ access ports on the EX4600 and Figure 3 shows the location of the LEDs on the QSFP+ uplink ports on the EX4600.

Figure 2: LEDs on the SFP+ Ports

Figure 3: LEDs on the QSFP+ Ports

The LED in Figure 2 labeled Link/Activity indicate link activity or a fault. The LED labeled Status in indicates transceiver presence.

Table 3 describes how to interpret the SFP+ port LEDs.

As shown in Figure 3, there are four bi-color LEDs for each QSFP+ port. The first LED is used and the remaining LEDs are not used when the interface is configured for 40-Gigabit Ethernet and connected to a QSFP+ transceiver. All four LEDs are used when the interface is configured for 10-Gigabit Ethernet and the port is connected using an optical split cable or a copper DACBO cable. Table 4 describes how to interpret the QSFP+ LEDs.

The management panel of the EX4600 switch is located on the Field Replaceable Unit (FRU) side of the switch, as shown in Figure 4. See Figure 5 for management panel details.

Figure 4: EX4600 Switch, FRU Side with Fans Modules and Power Supplies Installed

1 — Management panel	3 — Power supply units
2 — Fan modules

Figure 5: Management Panel Components

1 — Status LEDs	4 — RJ-45 console port (CON) and em0–RJ-45 (1000 Base-T) management Ethernet port (C0)
2 — em1–SFP management Ethernet port (C1) Cage (socket for either 1 GbE copper SFP or fiber SFP)	5 — USB port
3 — Reset button, see caution statement below

The management panel consists of the following components:

• Status LEDs

  • ALM (Alarm or beacon)

    • Unlit indicates the switch is halted or that there is no alarm.

    • Red indicates a major alarm.

    • Amber indicates a minor alarm.

  • SYS (System)

    • Unlit indicates the switch is powered off or halted.

    • Solid green indicates that Junos OS for EX Series is loaded on the switch.

    • Blinking green indicates that the switch is a participating member in a Virtual Chassis.

  • MST (Primary) in a Virtual Chassis

    • Unlit indicates the switch is standalone or is a line card member in a Virtual Chassis.

    • Solid green indicates the switch is the primary in a Virtual Chassis.

    • Blinking green indicates the switch is the backup primary in a Virtual Chassis.

  • ID (Identification)

    • Unlit indicates the beacon feature is not enabled.

    • Blinking blue indicates the beacon feature is enabled. This feature is enabled using the request chassis beacon command.

• Switch model number

• Management Ports C0 and C1

  • C0–Use the RJ-45 connectors for 10/100/1000 BaseT.

  • C1–Use the SFP connector for 1000 BaseX.

• USB port for image updates.

• Console port (RJ-45) to support RS-232 serial ports. The LEDs above the port indicate status and link.

The EX4600 switch has four status LEDs on the field-replaceable unit (FRU) end of the chassis, next to the management ports (see Figure 6).

Figure 6: Chassis Status LEDs on an EX4600 Switch

1 — Status LEDs	3 — RJ-45 console port (CON) and em0–RJ-45 (1000 Base-T) management Ethernet port (C0)
2 — em1–SFP management Ethernet port (C1) Cage (socket for either 1 GbE copper SFP or fiber SFP)	4 — USB port

Table 5 describes the chassis status LEDs on an EX4600 switch, their colors and states, and the status they indicate. You can view the colors of the three LEDs remotely through the CLI by issuing the operational mode command show chassis lcd.