1. Hardware Installation and Maintenance Guide
  2. Maintenance

6 Maintenance

This chapter explains Acme Packet 4600 System hardware maintenance procedures. This chapter also provides hardware alarm information.

System Shutdown

Alhough several user-replaceable components of the Acme Packet 4600 are hot-swappable, some limited Acme Packet 4600 maintenance procedures require that you shut down the system.

Before you shut down or restart the Acme Packet 4600, ensure that there are no active calls in progress. The command to show active calls is “show sessions.”

ACMEPACKET# show sessions

Procedures to reroute call and network traffic around the Acme Packet 4600 are outside the scope of this guide.

You can set the Acme Packet 4600 to reject all incoming calls from your system with the set-system-state command. When set to offline, this command lets calls in progress continue uninterrupted, but no new calls are admitted.

After all call processing has stopped, you can power off your Acme Packet 4600. Shutting down the system is appropriate when you are replacing a physical interface card, power supply, or are removing the Acme Packet 4600 from the equipment rack.

Rejecting Incoming Calls

To reject all incoming calls on the Acme Packet 4600 System:
  1. In Superuser mode, type show sessions to see all the current calls.
    ACMEPACKET# show sessions
  2. Type set-system-state offline and press <Enter>. 
    ACMEPACKET# set-system-state offline
 Setting system state to going-offline, process will complete when all current calls have completed
 ACMEPACKET#

Shutting Down the Acme Packet 4600 System

To shut down the Acme Packet 4600 System hardware:
  1. In Superuser mode, type halt and then press <Enter>.
  2. To confirm the halt request, type Y and then press <Enter>.
  3. When the console indicates shutdown is completed, unplug the AC power cords from the power supplies on the rear panel of the Acme Packet 4600.
  4. Confirm that the graphic display is dark and all fans are off.

Rebooting, Resetting, and Power Cycling

Reboot

Rebooting the Acme Packet 4600 shuts down the system in an orderly fashion and then automatically restarts it. The operating system gracefully shuts down as processes are terminated and the file system is stopped. While the system and its processes are stopped, all call processing is immediately halted. You may therefore wish to perform tasks that call for a reboot during off-peak maintenance hours.

Rebooting the Acme Packet 4600 is required every time you upgrade with a new version of the Acme Packet 4600 software.

Save your configurations before rebooting the Acme Packet 4600. Refer to the Maintenance and Troubleshooting Guide for a full explanation of this procedure. The save-config command is used to save the configuration in the example below.

For a full explanation and all options for the reboot command used in the example below, refer to the ACLI Reference Guide .

To reboot the Acme Packet 4600:
  1. Save any configuration changes you have made in the ACLI while in Superuser mode by typing save-config <Enter>.
    ACMEPACKET# save-config
 Save-Config received, processing.
 waiting 1200 for request to finish
 Request to 'SAVE-CONFIG' has Finished,
 Save complete
 Currently active and saved configurations do not
 match!
 To sync & activate, run 'activate-config' or 'reboot
 activate'.
 ACMEPACKET#
  2. Execute the reboot command at the Superuser prompt by typing reboot and then pressing <Enter>. 
    ACMEPACKET# reboot
       
-----------------------------------------
WARNING: you are about to reboot this SD!
  3. Type Y and then press <Enter> at the confirmation prompt to proceed with the reboot.
    Reboot this SD [y/n]?: y

System Reset

Resetting the Acme Packet 4600 via the reset pushbutton on the front of the chassis performs a cold reboot. This action is the equivalent of disconnecting the power from the system and then reconnecting it. There is no orderly termination of tasks, and the system shuts down abruptly. You should only reset the Acme Packet 4600 when it becomes unstable and no other means of gaining administrative control is possible.

During a system reset, certain files are not closed properly, and they may become corrupted. If an unclean shutdown is detected, filesystem recovery/repair will be run to ensure the system returns to a stable state. Filesystem verification also runs every 30 boots as a precautionary measure.

Note:

Always try to first reboot the Acme Packet 4600 from the ACLI before performing a cold reset. Only reset the system as a last resort.
To reset the Acme Packet 4600:
  1. Insert a rigid paperclip-sized tool into the small hole on the front of the chassis beneath the graphic display. The system immediately resets and begins its initialization and boot sequence.Image showing the reset pushbutton

Power Cycling

Power Cycling the Acme Packet 4600 is the process of turning the chassis off and then on again. Unplugging the power cords from the power supplies means to remove power from the system. When power cycling, it is imperative that you wait at least 10 seconds between power down and power up to ensure that all components are completely powered down before restarting the system.

Standby State for HA Nodes

When performing hardware maintenance on the Acme Packet 4600, it is best to minimize any risk of interrupting network traffic or losing data. If the Acme Packet 4600s are configured as an HA node, you should only work on the Acme Packet 4600 that is in standby state.

There are two ways to determine the HA state of each Acme Packet 4600 in an HA pair.
  1. If you are in the same physical location as the Acme Packet 4600 you can view the graphic display on the front panel. The display will indicate the HA state. A standby system displays (S) while an active system does not display (S).
  2. If you are not in the same physical location as the Acme Packet 4600, you can use the ACLI show health command. The output of this command indicates the current HA state of the Acme Packet 4600.

Once you have determined that the Acme Packet 4600 due for maintenance is in standby state, you can continue with the appropriate procedures to replace a part.

If you need to perform maintenance on the active Acme Packet 4600 you need to manually force the two Acme Packet 4600s to switch HA states. Forcing a switchover renders the currently active Acme Packet 4600 in Standby state, and the current standby Acme Packet 4600 will assume all traffic processing and forwarding as the active system.

Note:

This procedure is only applicable to Acme Packet 4600 in an HA deployment.
To force a Acme Packet 4600 into the standby HA state:
  1. Confirm that the relevant Acme Packet 4600 systems on active and standby are synchronized with the show health command. Type show health and press <Enter> on each system as shown in the following.Show health command examples
  2. Confirm that current configurations of both the active and standby Acme Packet 4600 match by typing display-current-cfg-version and press <Enter> at the ACLI prompt.
    NETNETSBC1# display-current-cfg-version
 Current configuration version is 5
 NETNETSBC1#
 NETNETSBC2# display-current-cfg-version
 Current configuration version is 5
 NETNETSBC2#

    Note:

    While the two current configuration version numbers on the two systems do not need to match each other, they MUST match the shared running configuration version.
  3. Confirm that running configurations of the active and standby Acme Packet 4600 match by typing display-current-cfg-version and press <Enter> at the ACLI prompt.
    NETNETSBC1# display-running-cfg-version
Running configuration version is 5
NETNETSBC1#
NETNETSBC2# display-running-cfg-version
Running configuration version is 5
NETNETSBC2#

    Note:

    While the two running configuration version numbers on the two systems do not need to match each other, they MUST match the shared current configuration version.
  4. Initiate a switchover between active and standby Acme Packet 4600s by typing notify berpd force on the standby Acme Packet 4600 and then pressing <Enter> at the ACLI prompt.
    NETNETSBC1# notify berpd force
  5. Wait for the other Acme Packet 4600 to transition to the standby state. Confirm that it is in the standby state by typing show health and pressing <Enter> at the ACLI prompt.
    NETNETSBC2# show health
Refer to the Upgrade section of the Maintenance and Troubleshooting Guide (400-0063-40A) for more information.

Replacing an NIU in an HA Node

When replacing the NIU in an HA node, refer to the following procedure:
  1. Prepare all equipment connected to the NIU for the NIU’s removal from the network.
  2. Force the system into standby state.
  3. Remove the NIU as described in this document.
  4. Log in to the ACLI via a console connection.
  5. Reboot the system from the ACLI.
When this Acme Packet 4600 returns online, it will synchronize its HA state with the active HA node using the new NIU. You can confirm the system state by using the show health command.

Chassis Removal

This section explains how to remove the Acme Packet 4600 from an equipment rack. To prevent injury, Acme Packet recommends that any time a Acme Packet 4600 is installed or removed from an equipment rack, two people complete the procedure.

Note:

You must first review the safety precautions for the Acme Packet 4600 prior to removing from an equipment rack.

Note:

Always disconnect the Acme Packet 4600 power supplies from the power source when removing a chassis from an equipment rack
Removing the Acme Packet 4600 System from an Equipment Rack rack
To remove the Acme Packet 4600 from an equipment:
  1. Set the System Power switch to the Stby position to cut off power to the Acme Packet 4600. Diagram showing DC Power Supplies (left) and System Power Switch (right)
  2. Remove the two power cords from the power supplies in the rear of the system. (There are no on/off switches on these power supplies).
  3. Remove all power cables from the Acme Packet 4600.
  4. Remove and label all attached network cables, alarm cable, and console cables from their respective ports on the chassis.
  5. Loosen the thumbscrews that secure the Acme Packet 4600 to the equipment rack slide rails. This may require using a #2 Phillips screwdriver. Diagram showing Loosening Thumbscrews

    Note:

    Beginning in this step, one person should support the Acme Packet 4600 from below while the other person removes the system chassis from the equipment rack.
  6. Pull the Acme Packet 4600 forward and out of the equipment rack.
  7. When mounted in slide rails, the chassis will stop when the locking clip pin on the chassis slide rail engages with the equipment rack slide rail. Image showing Locking Clip Fastens the Chassis and Rack Slide Rails
  8. Push on the locking clip pin and locking clip latch to unlock the slide rails from each other. Image showing Locking Clip Latch and Locking Clip Pin
  9. Remove the chassis completely from the slide rails.
  10. Lift the Acme Packet 4600 out of the equipment rack, and move it to an ESD-safe location.

Power Supply Removal and Replacement

This section explains how to remove and replace the power supplies in the Acme Packet 4600 chassis.

Note:

After physically unplugging a power supply, disconnect it from the power source before you remove or install it in the chassis.

The power supply is a user-replaceable component. If an Acme Packet 4600 power supply malfunctions, you should remove the malfunctioning power supply and replace it.

Note:

Power supplies can be removed from the chassis while it is still installed in the rack and while the second power supply is providing system power; this is called a warm swap.

Note:

When removing and replacing a power supply, remember to first ground yourself using appropriate ESD grounding equipment such as a wrist strap.
Image showing a ESD Grounding StrapTo remove a power supply from the Acme Packet 4600 chassis:
  1. Remove the power cables from the power supplies.Diagram showing Removing the Power Cords
  2. With your thumb, push the grey locking tab to the left to unlock the power supply from the chassis.Diagram showing Releasing the Locking Tab
  3. Holding the handle, pull the power supply towards you. This will disengage the power supply from the midplane and the chassis.
  4. Continue pulling the power supply towards you until it is completely out of the chassis.
  5. Move the power supply to an ESD-safe location.

    Note:

    NEVER power up a power supply before it is installed in the Acme Packet 4600 chassis.
  6. Ground yourself with an ESD wrist strap before installing a power supply.

Installing a Power Supply

To install a power supply in the Acme Packet 4600 chassis:
  1. Locate the power supply to be installed.
  2. Locate the empty power supply slot in the chassis.
  3. Insert the power supply into the empty power supply slot located on the rear panel of the Acme Packet 4600 chassis. The labels on the power supply face upward. Diagram showing Installing the Power Supply
  4. Push the power supply handle until the power supply is engaged with the mid plane.
  5. The power supply is installed in the Acme Packet 4600 chassis. Diagram showing Installed Power Supplies
  6. Connect the power cord to the inserted power supply.

NIU Removal and Replacement

Prior to removing an NIU (Network Interface Unit), the platform in which it is installed must be in standby state if it is part of a HA pair before powering down the chassis and removing the NIU. The following procedure describes how to remove an NIU.

Note:

Make sure you are properly grounded with an ESD strap before removing the NIU.

NIU Removal

To remove an NIU:
  1. If the target Acme Packet 4600 is part of a HA pair, ensure that it is in standby state. For more information, see See Standby State for HA Nodes.
  2. Set the System Power Switch to STBY to power down the chassis. See See DC Power Supplies (left) and System Power Switch (right).
  3. Unplug all network and management cables from the NIU you plan to remove from the Acme Packet 4600.

    Note:

    This will cause a link loss on all connections.
  4. Using a #2 Phillips screwdriver or your hands, unscrew the two captive thumbscrews located on each side of the NIU. The screws are spring-loaded and will push forward, but they will not fall out of the NIU.Diagram showing how to Loosen NIU Captive Thumbscrews
  5. With thumb and index finger slide ejector levers inward prior to pivoting ejectors. Diagram showing how to slide ejector levers

    Note:

    Failure to follow this step may cause damage to the NIU ejectors:
  6. Slide the lever catch and pivot the two ejection levers outward at the same time, pulling the card out of its connection to the motherboardand away from the system chassis. This action disengages the NIU from the system, severing all electrical contact to the processing unit. Diagram showing Pivoting the Ejection Levers
  7. Remove the loosened NIU out of the Acme Packet 4600 by holding and pulling on each side of the NIU's front panel.
  8. Place the NIU in an antistatic bag while it remains outside of the Acme Packet 4600 System chassis.

NIU Installation

To install an NIU into the Acme Packet 4600 chassis:
  1. Locate the NIU.
  2. Ensure that the ejection levers on the front of the card are in the open and extended position.
  3. Hold the NIU by its sides with the front panel bezel facing you.
  4. Note the two flared guide rails that the NIU rides as it is inserted into the Acme Packet 4600. The guide rails lead the NIU to engage with the bus connector squarely.Image showing Aligning the NIU Card with the Chassis Slot Guides
  5. Slide the card into the Acme Packet 4600. The physical interface card circuit board slides into the guide rails in the NIU bay of the system chassis. Image showing how to install the NIU
  6. Continue sliding the card into the chassis until the ejection levers meet the chassis and start to fold inward as the NIU is inserted into the chassis.
  7. Fold both ejection levers inward toward the card to complete the NIU connection to the motherboard. Pushing the ejection levers inward draws the physical interface card toward the system chassis and completes the connection. Image showing locking the NIUDiagram showing locking the NIU
    Ensure pressure is applied to the ends of the ejector (not the sliding section) when seating the NIU/TCU.
  8. Verify the lever catch is fully engaged with the bezel.
  9. Screw the NIU into the chassis with a #2 Phillips screwdriver. This creates the final connection between the interface unit and the chassis. Image showing how to tighten the thumbscrews
  10. Replace all network and management cabling.
  11. Set the System Power switch to ON to power up the chassis. The system boots up.
  12. If the H/S LED lights in either a steady or flashing state, the NIU is not seated properly. If the H/S LED is lit, follow these steps:
    1. Set the System Power switch to STBY to power down the chassis.
    2. Push the ejection levers inward to draw the physical interface card toward the system chassis and complete the connection. The latches must engage to complete NIU insertion and lock to the chassis.
    3. Set the System Power switch to ON to apply power to the chassis. The system boots up.
    4. When the NIU PWR LED lights and the H/S LED is extinguished, proceed with normal operations. Otherwise, contact customer support for further assistance.

Replacing the SSM3 Module

The SSM3 module that provides TLS security functionality to the Acme Packet 4600 is installed on the NIU PCB as shown below. There is a single connector located on the edge of the NIU into which the SSM3 module plugs; this connector supports one side of the module while the other side of the SSM3 module rests on four standoff posts.

Pre-Installation Guidelines

Please read and follow these pre-installation guidelines prior to replacing the SSM3 module:
  • The SSM3 module can be installed only in the designated location.
  • Note the installation location of the SSM3 module on the NIU PCB.
  • Ground yourself and follow proper ESD grounding procedures.
  • Remove the SSM3 from the shipped packaging.
  • Install the SSM3 according to the procedure below.
  • This upgrade should be performed during low-traffic periods or during times of scheduled maintenance.
  • Follow industry-standard procedures to ensure ESD protection.
  • When installing or removing an NIU card, move the card to an ESD-safe location.

Note:

Before handling a Acme Packet 4600 Transcoding NIU card, follow the proper ESD grounding procedures. Failure to do so could damage the NIU card and its components.

Required Parts

The following parts are required to replace the SSM3 module:
  • ESD wrist strap
  • ESD safe location
  • SSM3 Module
  • NIU Card

Removing the SSM3 Module

The following procedure describes how to remove the SSM3 module located on the Acme Packet NIU card.
Prerequisites:
  • Provide an ESD-safe location to place the SSM3 and NIU card.
  • Wear an ESD wrist strap or take similar equivalent actions to prevent static damage to the NIU card or other ESD-sensitive components.
  • Note the location of the SSM3 module connector on the NIU card.
  • #2 Phillips screwdriver
  1. Remove the NIU card as directed in this guide.
  2. Place the NIU card on an ESD-safe mat or other similar location.
  3. Using the Phillips screwdriver, remove the four standoff screws from the SSM3 module and store them for later reuse. Image showing the Location of the SSM3 Module Connector and Standoff Posts
  4. To remove the module (shown below), grasp the SSM3 module along either side of the connector between your thumb and index finger and pull up on one side of the connector until the module is fully disconnected from the connector. Place the module on an ESD-safe surface. Image showing Removing the SSM3 Module

Installing the SSM3 Module

The following procedure describes how to install the SSM3 module onto the Acme Packet NIU card.
Prerequisites:
  • Wear an ESD wrist strap or take similar equivalent actions to prevent static damage to the NIU card or other ESD-sensitive components.
  • Place the new SSM3 module in an ESD-safe location.
  • Note the location of the SSM3 module connector on the NIU card.
  • #2 Phillips screwdriver
  • Standoff screws (stored after removing the SSM3 module or available with the new SSM3 module)
  1. Grasp the SSM3 module along either side of the connector between your thumb and index finger and join the module connector to the NIU connector by pressing evenly across the connector until the module is fully seated (see below). Image showing Installing the SSM3 Module
  2. Press evenly across the top of the connector to fully seat the SSM3 module on the NIU PCB as shown below. Note that the SSM3 is fastened to the connector at one end while at the other end, the board rests on two standoffs attached to the NIU as shown in the figures below. Image showing Fully Seating the SSM3 Module Connector
  3. Using the Phillips screwdriver, insert and tighten the four standoff screws to secure the SSM3 module to the PCB.
  4. Replace the NIU in the Acme Packet 4600 chassis.Image showing the Location of the SSM3 Module Connector and Standoff Posts

Replacing Transcoder DSP Modules

Up to twelve transcoder DSP modules that provide transcoding functionality to the Acme Packet 4600 are installed on the NIU printed circuit board in slots 0 through 11. Image showing Up to twelve transcoder DSP modules that provide transcoding functionality to the Acme Packet 4600 are installed on the NIU printed circuit board in slots 0 through 11.

Note:

Never remove the heatsink from the transcoder DSP modules.

There are slots for installing the transcoder DSP modules in two locations on the PCB (two groups - the first of eight slots, and the second of four slots- See Figure 6 - 122). Transcoder DSP modules should be installed consecutively in numerical order, starting with slot 0. Image showing the Locations of Transcoder DSP Modules

Installation and Removal Guidelines

Please read and follow these guidelines prior to installing or removing the transcoder DSP module:
  • The transcoder DSP module can be installed only in the designated location.
  • Note the installation locations of the transcoder DSP modules on the NIU PCB.
  • Ground yourself and follow proper ESD grounding procedures.
  • Remove the transcoder DSP module from the shipped packaging.
  • Remove and install the transcoder DSP module according to the procedures below.
  • The installation of these modules should be performed during low-traffic periods or during times of scheduled maintenance.
  • Follow industry-standard procedures to ensure ESD protection.
  • When installing or removing an NIU card, move the card to an ESD-safe location.

Note:

Before handling a Acme Packet 4600 NIU card, follow the proper ESD grounding procedures. Failure to do so could damage the NIU card and its components.

Required Parts

The following parts are required to replace the transcoder DSP module.
  • ESD wrist strap
  • ESD-safe location
  • Transcoder DSP module
  • NIU Card

Removing the Transcoder DSP Module

The following procedure describes how to remove the transcoder DSP module from the NIU PCB.
Prerequisites:
  • Provide an ESD-safe location to place the transcoder DSP module and NIU card.
  • Wear an ESD wrist strap or take similar equivalent actions to prevent static damage to the NIU card or other ESD-sensitive components.
  • Note the location of the transcoder DSP module connector on the NIU card.
  1. Remove the NIU card as directed in this guide. See See NIU Removal and Replacement.
  2. Place the NIU card in an ESD-safe location.
  3. To remove the module (as shown in the photos below), use a fingertip to release the catch holding either end of the transcoder DSP module. Image showing Releasing the Fastener Holding the Transcoder DSP Module (1 of 2)Image showing Releasing the Fastener Holding the Transcoder DSP Module (2 of 2)
  4. Once the fasteners are detached from both sides of the transcoder DSP module, hold the center of the module between your finger and thumb and slowly remove the module. Be careful to keep the module level while removing it and guide it smoothly through the guide slots on either side.Image Showing Removing the Transcoder DSP Module
  5. Place the transcoder DSP module on an ESD-safe antistatic surface.

Installing the Transcoder DSP Module

The following procedure describes how to install the transcoder DSP module onto the NIU PCB.
Prerequisites:
  • Place the new transcoder DSP module in an ESD-safe location.
  • Wear an ESD wrist strap or take similar equivalent actions to prevent static damage to the NIU card or other ESD-sensitive components.
  • Note the location of the transcoder DSP module connector on the NIU card.
  1. Grasp the transcoder DSP module between your thumb and index finger and line up both sides of the module with the slot guides attached to the NIU PCB (see below). Image showing Installing the Transcoder DSP Module
  2. Using your thumb on your other hand, guide the module evenly into the slot guides located on each side as you lower the component into the connector. Press evenly across the top of the connector to fully seat the transcoder DSP module on the NIU PCB as shown below. Note that the module is fastened to the connector at one end while at the other end, the board rests on two standoffs attached to the NIU as shown in the figures below. Image showing Installed Transcoding DSP Module

Upgrading or Replacing a Solid State Drive

This section explains how to upgrade or replace the Solid State Drive (SSD) in your Acme Packet 4600. The SSD upgrade or replacement order consists of the drive itself with mounting brackets and 4 pan head screws (M3 x 5mm) attached.

Installation Tools and Parts

The following tools and parts are required to install a Solid State Drive in your Acme Packet 4600:
  • Solid State Drive
  • #1 Phillips-head screwdriver
  • #2 Phillips-head screwdriver
  • ESD wrist strap
  • Cable labels

Pre-removal

Perform the following logical and physical preparations before you remove the Solid State Drive (SSD) from your Acme Packet 4600.

Removing the Logical System from the Network

Be mindful of all systems and network entities that may be affected by removing an Acme Packet 4600 from your network. In addition to routing calls around the Acme Packet 4600, you must also prepare network monitoring and health systems to accommodate the loss of a network element.

Specific procedures for removing the Acme Packet 4600 from your network may be found earlier in this document.

Removing the Physical System from the Equipment Rack

After logically removing the Acme Packet 4600 from your network, the following procedures must be completed before you can replace the SSD. These are:
  • Disconnection of all media network, management network, alarm and console cabling from the Acme Packet 4600
  • Disconnection of all power and ground system cabling
  • Removal of the Acme Packet 4600 from the equipment rack

Removing the Data Cabling

Labeling all existing data cables will ease reconnecting the Acme Packet 4600 to the network.
  1. Label each cable noting which port on the Acme Packet 4600 it connects to.
  2. Attach the appropriate label to each cable. Remember to label all media network cables , maintenance cabling, and console and alarm cables.
  3. Disconnect all data cables from the Acme Packet 4600.

Removing Power and Ground Cabling

Take care in removing power from the Acme Packet 4600. Refer to the Safety chapter in this document for complete safety guidelines.

The following is an overview of the power and ground cabling removal process:
  • Shut off power to the Acme Packet 4600 at the circuit breaker or power source.
  • Remove the power cable(s) from the Acme Packet 4600’s power supplies.
  • Unscrew the two kep nuts that secure the grounding cable lug to the Acme Packet 4600.
  • Remove the ground cable. Put the kep nuts in a safe place.

Removing the Chassis

The Acme Packet 4600 is heavy, and personal injury can result while removing and installing the chassis in an equipment rack. To prevent injury or damage to the Acme Packet system, follow these guidelines:

Note:

To prevent personal injury, we recommend that two people lift and install the chassis into the equipment rack.

Follow your organization’s best practices for lifting and installing heavy components into an equipment rack.

Ensure that the Acme Packet 4600 remains supported as you remove it from the equipment rack.

The following is an overview of the chassis removal process. Please refer to the procedure earlier in this chapter for detailed instructions
  • Use a workbench or other supportive surface, and place it nearby to set the Acme Packet 4600 on after it is removed from the equipment rack.
  • Support the chassis before and while removing it from the equipment rack.
  • Remove the Acme Packet 4600 from the rack. The number of points to unscrew depends upon whether the Acme Packet system is installed in a front- or center-mount configuration.
  • Place the chassis on a workbench.

Removing Hardware in Center-Mount Configurations

The rack ears must be removed before you can open the chassis.Image showing left rack ear

To remove center-mount equipment rack hardware:

  1. Remove the left rack ear by using a #1 Phillips-head screwdriver.
  2. Remove the right rack ear by unscrewing the three screws.
  3. Set the rack ears and screws aside.

Removing Hardware in Front-Mount Configurations

The chassis slides and rack ears must be removed before you can open the chassis.

To remove front-mount equipment rack hardware:
  1. Remove the left chassis slide by using a #2 Phillips-head screwdriver.
  2. Remove the left rack ear by unscrewing the three screws.Image showing the Left chassis slide.Image showing the Left chassis slide.
  3. Remove the the two countersunk screws on the left rear side by using a #1 Phillips-head screwdriver.
  4. Repeat steps 1 - 3 on the right side of the Acme Packet 4600.
  5. Set the rack ears and screws aside

Opening the Chassis

The chassis lid is secured to the chassis by 15 screws. Remove the screws and lift the chassis lid off the chassis.

Note:

Before opening the Acme Packet 4600, ground yourself using an ESD wrist strap or other comparable grounding system. Failure to do so could damage the Solid State Drive and the Acme Packet 4600.

Note:

Use a #2 Phillips-head screwdriver for all chassis cover and side screws.
  1. Unscrew the four countersunk screws on each side of the Acme Packet 4600 that hold the chassis cover to the chassis. Image showing countersunk screws on the sides.
  2. Set these screws aside.Image showing screws
  3. Unscrew the seven countersunk screws on the top of the Acme Packet 4600 that hold the chassis cover to the chassis. The following is an image of the top of the chassis.
  4. Set the lid and screws aside.
  5. Lift the chassis lid off of the chassis and set aside.

Removing and Replacing the Solid State Drive

Note:

Before handling the Solid State Drive, ground yourself using an ESD wrist strap or other comparable grounding system. Failure to do so could damage the Solid State Drive or the Acme Packet 4600.
Identifying the Solid State Drive

Once the Acme Packet 4600 is open, replacement is straightforward. The Solid State Drive (SSD) attaches electrically to the Acme Packet 4600 motherboard by a standard 2.5” SATA connector. In addition, it is secured to the motherboard by four screws.

The SSD is located at the front of the motherboard, on the left side as you view it from the rear of the chassis. The SSD has brackets on each side, with four screws attaching it to the motherboard.Image showing the location of installed SSDClose-up of installed SSD

  1. Identify the four screws that attach the SSD to the motherboard.
  2. Identify the SATA connector attached to the SSD.Image showing the positions of screws and the SSD SATA cable connector
  3. Using a number 1 Phillips screwdriver, unscrew the four screws attaching the SSD to the motherboard.
  4. Hold the SSD in one hand, and the SATA connector in the other, and gently disconnect the two. Note that the SATA cable should remain attached to the motherboard.After SSD removal
Replacing the Solid State Drive
  1. Exchange the current SSD for the replacement, then re-attach the SSD to the SATA cable. The connector is keyed, so make sure the gap in the connector is lined up with the key in the SSD.
  2. Push down on the part of the SATA connecter attached to the motherboard to check to make sure the SATA cable is seated properly to the motherboard.
  3. Line up the screw mounts on the SSD with the screw bases, and tighten the screws. Be careful not to over-tighten the screws.

Postinstallation

After the Solid State Drive has been installed in the Acme Packet 4600, you can close the chassis and reinstall it in the equipment rack.

Attaching the Lid
Use a #2 Phillips-head screwdriver for all chassis cover and side screws.
  1. Set the lid on top of the Acme Packet 4600 chassis. The stickers are positioned at the chassis rear.
  2. Screw the eight countersunk screws into the top of the Acme Packet 4600 to secure the chassis cover to the chassis. The following is an image of the top of the chassis without any screws.Image showing the top of the chassis without screws
  3. Continue securing the chassis lid with four screws on each side. Image showing the chassis lid
Installing the Chassis in the Rack

Perform the reverse of the operations in the Physical System Removal section of this document.

Please refer to earlier sections of this document for full rack installation procedures.

Validating the SSD
Oracle recommends that you validate the Solid State Drive installation by running Acme Packet Session Director diagnostics. All versions from nnCX_diags110.gz and later include the appropriate tests for validating the SSD. Please refer to the diagnostics documentation for more information. In the following procedure, after booting into diagnostics, this preliminary check ensures that the system recognizes the Solid State Drive.
Password: ****** 
       
       
       
-> dc
/boot/  - Volume is OK
243 MB
      
/code/  - Volume is OK
245 MB
/sata/  - Drive Present
476940 MB
       
Starting Diagnostic Executive...
Comm Express MCH 945 Present.
AHCI Support is Enabled.
       
Acme Packet Net-Net 4600
Diagnostic Executive Version 1.10
Creation date: Nov 25 2014 11:08:02
Board Level Diagnostics
Date & Time: TUE NOV 25 14:56:01 2014
       
       
[diag_proc] ->
Formatting the SSD

After installing the Solid State Drive, you must format it. Details on file system designs and the formatting procedure may be found in Chapter 9, File System Maintenance of the Maintenance and Troubleshooting Guide for your software release.

Fan and Air Filter Maintenance

This section explains how to remove a fan and replace the air filter on your Acme Packet 4600.

Removing and Replacing Individual Fans

The individual fan is a user-serviceable, hot-swappable component. There are five individual fans in the Acme Packet 4600. If the Acme Packet 4600 experiences a fan malfunction, you must remove the existing fan and replace it with a functional one.

The hot-swappable fan removal and replacement procedures require that you have a replacement fan on hand. In order to maintain system operations, you must be able to remove the malfunctioning fan and quickly replace it with a functioning one to prevent the system from overheating.

The Acme Packet 4600 air filter is located behind the front bezel and is a Field Replaceable Unit (FRU).

Note:

An over temperature condition can stop packet processing.

If you do not have a replacement fan nearby, always shut down the system and disconnect the power before removing the malfunctioning fan to replace at a later time.

When removing and replacing a fan, remember to first ground yourself using appropriate ESD grounding equipment such as a wrist or heel strap.

To remove a fan:
  1. Press two fingers against the left end of the plastic fan bezel and pull it directly toward you. The fan bezel comes off the chassis. Set the fan bezel aside. The individual fans are now exposed.Image showing removing the Front Bezel
  2. Using a small bladed screwdriver, unscrew the two captive screws at each upper left and lower right corners of the individual fan you are replacing.Image showing Loosening Fan-Fastening Screws
  3. Pull the individual fan you just unscrewed directly toward you, out of the chassis. Move the fan to an ESD-safe location.Image showing Removing the Fan

Install Individual Fans

To obtain a replacement fan, contact customer support.

Replacing the fan is the reverse process as removing it.

To install a fan:

Note:

The power connector should be on the lower side of the module when inserted into the Acme Packet 4600 chassis.
  1. Carefully align the pins on the back of the fan with the holes in the chassis midplane and install the fan into the slot. Image showing Fan Slot Pin HolesImage showing Inserting the Fan into the Chassis Slot
  2. Using a small bladed screwdriver, tighten the two captive screws to hold the fan into place.Image Showing Tightening Fan-Fastening Screws
  3. Install the front bezel onto the Acme Packet 4600 by hooking the right side of the bezel onto the chassis and then pivoting the bezel to the left until the magnet catches the chassis. You may need to push on the left side of the display opening to fully seat the bezel. Image Showing Replacing the Front Bezel
  4. The replacement fan and Bezel are installed onto the Acme Packet 4600.

Maintaining the Cooling Components

The Acme Packet 4600 air filter removes airborne particles before they are drawn into the Acme Packet 4600 chassis. To prevent system malfunction and prolong the life of the system’s cooling components, do these things:
  • Replace the fan filter every three months
  • Clean the air inlets once a week.

Cooling maintenance encompasses cleaning the fan module and cleaning the air inlets on the front of the Acme Packet 4600 chassis. Cleaning the fan module requires that you remove the module itself. If you are not shutting down the Acme Packet 4600, this procedure must be performed quickly or else the system may overheat and cause packet processing to stop.

This maintenance should be performed alongside other preventive maintenance to take place within a planned maintenance or downtime window, during off-peak hours.

Cleaning the Cooling Components
To clean the fan module:
  1. Remove the fan module from the chassis.
  2. Spray compressed air into the fan module to dislodge and blow away any contaminants and clean out the fans.
  3. Replace the fan module.
  4. To clean the perforated air inlets: Remove the bezel from the chassis by gripping the two corners and pulling on it. The bezel is held on magnetically.Image Showing Removing the Front Bezel
  5. Place the bezel face down.
  6. On the back of the bezel, pull off the air filter. Image showing Removing the Air Filter from Behind the Front Bezel
  7. Replace the air filter with a new one. Do not reuse the worn air filter.
  8. Gently wipe the front fan bezel that contains the perforated air inlets with a clean, dry cloth. You can alternatively remove the fan bezel from the system and use compressed air to clean out the perforated air inlets.
  9. Install the air filter carefully in place behind the front bezel.Image showing Air Filter Installed Behind the Front Bezel

    Note:

    Only the removable fan bezel has vent holes that require cleaning.

    Note:

    To prevent damage to the painted finish, do not use any solvents or liquids to clean the perforated air inlets on the front of the chassis.
  10. Install the front bezel onto the Acme Packet 4600 by hooking the right side of the bezel onto the chassis and then pivoting the bezel to the left until the magnet catches the chassis. You may need to push on the left side of the display opening to fully seat the bezel.Image Showing Replacing the Front Bezel

Optical Transceiver Removal and Replacement

Your troubleshooting and diagnostics might reveal that the optical transceiver component of an optical physical interface card needs to be replaced. The optical transceiver serves two functions:
  • Converts electrical signals into optical signals used to communicate with other optical networking equipment.
  • Serves as the receptacle for the LC duplex fiber optic connectors.

Optical transceivers are hot swappable and may be replaced while the Acme Packet 4600 is powered on. Leave the NIU installed in the Acme Packet 4600 as you extract the optical transceiver.

To obtain a replacement optical transceiver, contact customer support.

Note:

To prevent damage to the optical lens, Acme Packet recommends that the protective dust cover stay on the optical transceiver port when the physical interface card is not cabled.

Removing an Optical Transceiver

To remove the transceiver from an NIU transceiver port:
  1. Unplug all fiber optic cables from the optical transceiver to be replaced. Image showing NIU Transceiver Ports
  2. Pull the bale clasp latch out and down. It will pivot downwards on its hinge. Image showing Lowering the Bale Clasp Latch
  3. Holding the extended bale clasp latch, pull the optical transceiver fully out of its socket of the physical interface card. Image showing Removing the Optical Transceiver

Install an Optical Transceiver

To install an optical transceiver:
  1. Slide the replacement optical transceiver into the socket on the NIU.Image showing Inserting the Optical Transceiver into the Socket
  2. Press on the face of the optical transceiver to seat it in the socket.Image showing Seating the Optical Transceiver
  3. Flip the bale clasp latch back into the rest position. Image showing Closing the Clasp Latch
  4. Reconnect the optical cables to their corresponding ports. Image showing Reconnecting Optical Cables

Copper Transceivers

Copper transceivers are also available for the Acme Packet 4600 System. They are removed and replaced similarly to the optical transceivers.

Alarms

The Acme Packet 4600 generates internal alarms that correspond to internal hardware fault conditions. Hardware faults are divided into two types:
  • Hardware and environmental
  • Media link

Each alarm is assigned a severity level, depending on the details of the fault.

Alarm Severity Description
Minor Functionality is impaired to a small degree (e.g., a single fan has failed)
Major Pending failures or unexpected events are imminent (e.g., an LOS)
Critical Catastrophic condition has occurred (e.g., the system is overheating)
The Acme Packet 4600 polls its hardware components to ensure they are functioning properly. If it encounters a fault condition, it will report alarms in these categories:
  • Hardware temperature
  • Fan speed
  • Environmental sensor
  • Power supply
  • Voltage
  • Physical interface cards

Important:

If different sensors report two or more events of the same severity with the same Alarm ID, only the first alarm gets reported.

Hardware and Environmental Alarms

This section provides details about hardware and environmental alarms.

Hardware Temperature Alarm

The following table lists the hardware temperature alarm.

Alarm Name Alarm ID Alarm Severity Causes Example Log Message Graphic Display Window Message
TEMPERATURE HIGH 65538

CRITICAL: >105°C

MAJOR: >100°C

MINOR: >95°C

 Fans are obstructed or stopped. The room is abnormally hot.

Temperature: XX.XXC

(where XX.XX is the temperature in degrees)

 Temperature X C (where X is the temperature in degrees)
If this alarm occurs, the Acme Packet 4600 turns the fan speed up to the fastest possible speed.

Fan Speed Alarms

The following table lists the fan speed alarm.

Alarm Name Alarm ID Alarm Severity Causes Example Log Message Graphic Display Window Message
FAN STOPPED 65537

CRITICAL: any fan speed is <50%. Or speed of two or more fans is >50% and <75%.

MAJOR: speed of two or more fans is

> 75% and < 90%. Or speed of one fan is >50% and <75% and the other two fans are at normal speed.

MINOR: speed of one fan> 75% and <90%, the other two fans are at normal speed

 Fan failure.

Fan speed: XXXX XXXX XXXX

where xxxx xxxx xxxx is the revolutions per minute (RPM) of each fan on the fan module

 Fan stopped
If this alarm occurs, the Acme Packet 4600 turns the fan speed up to the fastest possible speed.

Environmental Sensor Alarm

The following table lists the environmental sensor alarm.

Alarm Name Alarm ID Alarm Severity Cause(s) Example Log Message Graphic Display Window Message
ENVIRONMENTAL SENSOR FAILURE 65539 CRITICAL The environmental sensor component cannot detect fan speed and temperature. Hardware monitor failure! Unable to monitor fan speed and temperature! HW Monitor Fail

Power Supply Alarms

The following table lists the power supply alarms.

Alarm Alarm ID Alarm Severity Causes Log Message Graphic Display Window Message
PLD POWER A FAILURE 65540 MINOR Power supply A has failed. Back Power Supply A has failed! X HW ALARMS: (where X is the number of hardware alarms
PLD POWER A UP 65541 MINOR Power supply A is now present and functioning. Back Power Supply A is present! X HW ALARMS: (where X is the number of hardware alarms
PLD POWER B FAILURE 65542 MINOR Power supply B has failed. Back Power Supply B has failed! X HW ALARMS: (where X is the number of hardware alarms
PLD POWER B UP 65543 MINOR Power supply B is now present and functioning. Back Power Supply B is present! X HW ALARMS: (where X is the number of hardware alarms

Voltage Alarms

The following table lists the voltage alarms.

Alarm Alarm ID Alarm Severity Cause(s) Log Message Graphic Display Window Message
PLD VOLTAGE ALARM 2P5V (2.5 Volt Rail) 65544

MINOR

EMERGENCY

 A PLD exceeds a predetermined threshold

Voltage 2.5V CPU has minor alarm

Voltage 2.5V CPU has emergency alarm, the system should shut down

 X HW ALARMS: (where X is the number of hardware alarms

PLD VOLTAGE ALARM 3P3V

(3.3 Volt Rail)

 65545

MINOR

EMERGENCY

 A PLD exceeds a predetermined threshold

Voltage 3.3V has minor alarm

Voltage 3.3V has emergency alarm, the system should shut down

 X HW ALARMS: (where X is the number of hardware alarms

PLD VOLTAGE ALARM 5V

(5 Volt Rail)

 65546

MINOR

EMERGENCY

 A PLD exceeds a predetermined threshold

Voltage 5V has minor alarm

Voltage 5V has emergency alarm, the system should shut down

 X HW ALARMS: (where X is the number of hardware alarms

PLD VOLTAGE ALARM CPU

(Host Voltage)

 65547

MINOR

EMERGENCY

 A PLD exceeds a predetermined threshold

Voltage CPU has minor alarm

Voltage CPU has emergency alarm, the system should shut down

 X HW ALARMS: (where X is the number of hardware alarms

NIU Alarms

The following table lists the NIU alarms. PHY0 and PHY1 are both located on the same NIU. PHY0 encompasses S0P0 and S0P1, while PHY1 encompasses S1P0 and S1P1. Therefore, both insertion and both removal alarms will be activated at the same time when the NIU is inserted or removed from the Acme Packet 4600.

Alarm Alarm ID Alarm Severity Cause(s) Log Message
PHY0 Removed 65550 MAJOR NIU S0Px was removed Physical interface card 0 has been removed
PHY0 Inserted 65552 MAJOR NIU S0Px was inserted None
PHY1 Removed 65553 MAJOR NIU S1Px was removed Physical interface card 1 has been removed
PHY1 Inserted 65554 MAJOR NIU S1Px was inserted None

Link and SDP Alarms

Link alarms are generated when a network cable is plugged into or unplugged from a configured network interface. For each possible network interface, an alarm exists that indicates whether the link goes up or down.

The following tables list detailed information about the Acme Packet 4600 NIU link alarms, including their ID assignments, severities, causes, log messages, and messages printed in the graphic display window.

Media Ethernet Link Alarms

The following table lists the NIU GbE and 10GbE interface link up/link down alarms.

Alarm Name Alarm ID Alarm Severity Cause(s) Example Log Message Graphic Display Message
LINK UP ALARM GIGPORT 131073 MAJOR 1GbE S0P0 link up Slot 0 port 0 UP X LINK ALARMS (where X is number of alarming links)
LINK DOWN ALARM GIGPORT 131074 MINOR 1GbE S0P0 link down Slot 0 port 0 DOWN X LINK ALARMS
LINK UP ALARM GIGPORT 131075 MAJOR 1GbE S0P1 link up Slot 0 port 1 UP X LINK ALARMS
LINK DOWN ALARM GIGPORT 131076 MINOR 1GbE S0P1 link down Slot 0 port 1 DOWN X LINK ALARMS
LINK UP ALARM GIGPORT 131077 MINOR 1GbE S0P2 link up Slot 0 port 2 UP X LINK ALARMS
LINK DOWN ALARM GIGPORT 131078 MINOR 1GbE S0P2 link down Slot 0 port 2 DOWN X LINK ALARMS
LINK UP ALARM GIGPORT 131079 MINOR 1GbE S0P3 link up Slot 0 port 3 UP X LINK ALARMS
LINK DOWN ALARM GIGPORT 131080 MINOR 1GbE S0P3 link down Slot 0 port 3 DOWN X LINK ALARMS
LINK UP ALARM GIGPORT 131081 MINOR 10GbE S0P4 link up Slot 0 port 4 UP X LINK ALARMS
LINK DOWN ALARM GIGPORT 131082 MINOR 10GbE S0P4 link down Slot 0 port 4 DOWN X LINK ALARMS
LINK UP ALARM GIGPORT 131083 MINOR 10GbE S0P5 link up Slot 0 port 5 UP X LINK ALARMS
LINK DOWN ALARM GIGPORT 131084 MAJOR 10GbE S0P5 link down Slot 0 port 5 DOWN X LINK ALARMS

Management Ethernet Link Alarms

The following table lists the NIU management Ethernet port alarms.

Alarm Name Alarm ID Alarm Severity Cause(s) Example Log Message Graphic Display Message
LINK UP ALARM VXINTF 131077 MINOR Mgmt0 link up Port 0 UP X LINK ALARMS
LINK UP ALARM VXINTF 131078 MINOR Mgmt1 link up Port 1 UP X LINK ALARMS
LINK UP ALARM VXINTF 131079 MINOR Mgmt2 link up Port 2 UP X LINK ALARMS
LINK DOWN ALARM VXINTF 131080 MAJOR Mgmt0 link down Port 0 DOWN X LINK ALARMS
LINK DOWN ALARM VXINTF 131081 MAJOR Mgmt1 link down Port 1 DOWN X LINK ALARMS
LINK DOWN ALARM VXINTF 131082 MAJOR Mgmt2 link down Port 2 DOWN X LINK ALARMS

SFP Presence Alarms

The following table lists the alarms that reflect when an SFP module is inserted or removed from an NIU.

Alarm Name Alarm ID Alarm Severity Cause(s) Example Log Message Graphic Display Message
SFP REMOVED GIGPORT 0 65568 CRITICAL S0P0 SFP Removed Slot 0 Port 0 SFP Removed X HW ALARMS: (where X is the number of hardware alarms
SFP INSERTED GIGPORT 0 65569 CRITICAL S0P0 SFP Inserted Slot 0 Port 0 SFP Inserted X HW ALARMS: (where X is the number of hardware alarms
SFP REMOVED GIGPORT 1 65570 CRITICAL S0P1 SFP Removed Slot 0 Port 1 SFP Removed X HW ALARMS: (where X is the number of hardware alarms
SFP INSERTED GIGPORT 1 65571 CRITICAL S0P1 SFP Inserted Slot 0 Port 1 SFP Inserted X HW ALARMS: (where X is the number of hardware alarms
SFP REMOVED GIGPORT 2 65572 CRITICAL S0P2 SFP Removed Slot 0 Port 2 SFP Removed X HW ALARMS: (where X is the number of hardware alarms
SFP INSERTED GIGPORT 2 65573 CRITICAL S0P2 SFP Inserted Slot 0 Port 2 SFP Inserted X HW ALARMS: (where X is the number of hardware alarms
SFP REMOVED GIGPORT 3 65574 CRITICAL S0P3 SFP Removed Slot 0 Port 3 SFP Removed X HW ALARMS: (where X is the number of hardware alarms
SFP INSERTED GIGPORT 3 65575 CRITICAL S0P3 SFP Inserted Slot 0 Port 3 SFP Inserted X HW ALARMS: (where X is the number of hardware alarms
SFP REMOVED 10GIGPORT 4 65576 CRITICAL S0P4 SFP Removed Slot 0 Port 4 SFP Removed X HW ALARMS: (where X is the number of hardware alarms
SFP INSERTED 10GIGPORT 4 65577 CRITICAL S0P4 SFP Inserted Slot 0 Port 4 SFP Inserted X HW ALARMS: (where X is the number of hardware alarms
SFP REMOVED 10GIGPORT 5 65578 CRITICAL S0P5 SFP Removed Slot 0 Port 5 SFP Removed X HW ALARMS: (where X is the number of hardware alarms
SFP INSERTED 10GIGPORT 5 65579 CRITICAL S0P5 SFP Inserted Slot 0 Port 5 SFP Inserted X HW ALARMS: (where X is the number of hardware alarms

When an SFP module is inserted or removed from an NIU, there is no impact on system health.