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Maintaining EX4500 Virtual Chassis Module

 

Removing a Virtual Chassis Module from an EX4500 Switch

The Virtual Chassis module is installed horizontally on the rear panel of the switch. See Rear Panel of an EX4500 Switch. Use the procedure described in this topic to remove the module from the switch chassis.

Note

The Virtual Chassis module is supported on EX4500 switches in Junos OS Releases 11.1 and later.

Caution

Operating an EX4500 switch without the intraconnect module or the Virtual Chassis module is not supported.

EX4500 switches running Junos OS Release 10.4R2 or later 10.4 releases will not boot if you do not install the intraconnect module in the switch.

EX4500 switches running Junos OS Release 11.1R1 or later releases will not boot if you install neither the intraconnect module nor the Virtual Chassis module in the switch.

Before you begin removing the Virtual Chassis module from the switch:

Ensure that you have the following parts and tools available:

  • ESD grounding strap

  • Phillips screwdriver, number 2

  • A replacement Virtual Chassis module. (Install the replacement module immediately after removing the module. Operating the switch without this module is not supported.)

  • An antistatic bag or antistatic mat

Note

You must remove the fan tray from the switch before removing the Virtual Chassis module. See Removing a Fan Tray from an EX4500 Switch.

To remove the Virtual Chassis module from the switch (see Figure 1):

  1. Halt the switch:
    user@switch> request system halt

    Wait until a message appears confirming that switch operation has halted.

  2. Power off the switch by performing one of the following:

    If you are using AC power:

    • If the AC power source outlet has a power switch, set it to the OFF (0) position.

    • If the AC power source outlet does not have a power switch, gently pull out the plug end of the power cord connected to the power source outlet.

    If you are using DC power:

    • Open the input circuit breaker so that the cables will not become active during the removal process.

  3. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.
  4. Remove the fan tray from the switch. See Removing a Fan Tray from an EX4500 Switch. Set it aside so that you can install it after you install the replacement Virtual Chassis module.
  5. Loosen the captive screws on the front faceplate of the module using the screwdriver.
  6. Position your fingers under the module as shown in Figure 1 and pull outwards to unseat and eject the module.Note

    Do not use the captive screws to pull the module out from the chassis. Pull from underneath the front edge of the module.

  7. Using both hands, gently slide the Virtual Chassis module halfway out of the chassis.
  8. Place one hand under the module to support it and slide it completely out of the chassis.
  9. Place the Virtual Chassis module in an antistatic bag or on an antistatic mat placed on a flat, stable surface.

Promptly install the replacement Virtual Chassis module. See Installing a Virtual Chassis Module in an EX4500 Switch.

Figure 1: Removing the Virtual Chassis Module from an EX4500 Switch
Removing
the Virtual Chassis Module from an EX4500 Switch
Note

If you have a Juniper J-Care service contract, register any addition, change, or upgrade of hardware components at https://www.juniper.net/customers/support/tools/updateinstallbase/ . Failure to do so can result in significant delays if you need replacement parts. This note does not apply if you replace existing components with the same type of component.

Installing a Virtual Chassis Module in an EX4500 Switch

The Virtual Chassis module is installed horizontally on the rear panel of the switch. See Rear Panel of an EX4500 Switch. Use the procedure described in this topic to install the Virtual Chassis module.

Note

The Virtual Chassis module is supported on EX4500 switches in Junos OS Releases 11.1 and later.

Caution

Operating an EX4500 switch without the intraconnect module or the Virtual Chassis module is not supported.

EX4500 switches running Junos OS Release 10.4R2 or later 10.4 releases will not boot if you do not install the intraconnect module in the switch.

EX4500 switches running Junos OS Release 11.1R1 or later releases will not boot if you install neither the intraconnect module nor the Virtual Chassis module in the switch.

Before you begin installing the Virtual Chassis module in the switch:

Ensure that you have the following parts and tools available:

  • ESD grounding strap

  • Phillips (+) screwdriver, number 2

  • A replacement Virtual Chassis module

Note

You must remove the fan tray from the EX4500 switch before installing the Virtual Chassis module. See Removing a Fan Tray from an EX4500 Switch.

To install a Virtual Chassis module in the switch (see Figure 2):

  1. Ensure that the switch is powered off:

    If you are using AC power:

    • If the AC power source outlet has a power switch, set it to the OFF (0) position.

    • If the AC power source outlet does not have a power switch, gently pull out the plug end of the power cord connected to the power source outlet.

    If you are using DC power:

    • Open the input circuit breaker so that the cables will not become active during the installation process.

  2. If the fan tray has not been removed from the switch, remove it. See Removing a Fan Tray from an EX4500 Switch. Set it aside so that you can install it after you install the replacement Virtual Chassis module.
  3. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.
  4. Taking care not to touch module components, pins, leads, or solder connections, remove the Virtual Chassis module from its bag.
  5. Loosen the captive screws on the front faceplate of the module using the screwdriver.Caution

    Before you slide the Virtual Chassis module into the slot on the switch chassis, ensure the module is aligned correctly. Misalignment might cause the pins to bend, making the module unusable.

  6. Using both hands, place the Virtual Chassis module in the empty slot and slide it in until it is fully seated.
  7. Tighten the captive screws using the screwdriver.
  8. Reinstall the fan tray in the switch chassis. See Installing a Fan Tray in an EX4500 Switch.
  9. Connect power to the switch. See Connecting AC Power to an EX4500 Switch or Connecting DC Power to an EX4500 Switch.

When the status (ST) LED on the Virtual Chassis module turns green, the module is ready for use.

Figure 2: Installing the Virtual Chassis Module in an EX4500 Switch
Installing
the Virtual Chassis Module in an EX4500 Switch
Note

If you have a Juniper J-Care service contract, register any addition, change, or upgrade of hardware components at https://www.juniper.net/customers/support/tools/updateinstallbase/ . Failure to do so can result in significant delays if you need replacement parts. This note does not apply if you replace existing components with the same type of component.