In this section:


Overview

The chassis replacement procedure describes the necessary tasks to replace the chassis. It contains information about the physical swap as well as BMC and BIOS upgrade (if necessary).

The SBC 5400 is a 2U rack-mounted chassis. It can be front or center mounted in standard 19” wide racks, with options for 23” wide racks.

The SBC 5400 chassis accommodates the following modules:

  • Motherboard
  • Up to four DSP 25 modules or one DSP 20 module

The chassis must be installed in adherence with the environmental specifications and power source requirements listed in SBC 5400 Post-Installation Checklist.

The following platform details are required when submitting an RMA:

  • Information about the platform software versions
  • Information about the installed hardware including the list of CRUs
  • Chassis serial number and the part number

For more information on hardware platform specification, refer to SBC 5400 Hardware Platform Specifications.

Before installing a new license file, a configuration backup must be taken by using the command saveConfig, which generates the .tar.gz backup file prior to the replacement.

The backup must be taken before performing any operation on the system. For detailed information, refer to Restoring SBC Configuration.

Procedures

The following tasks are performed for physical replacement of the failed chassis with the new one:

Backup the Configuration

Before installing a new license file, a configuration backup must be taken by using the command saveConfig, which generates the .tar.gz backup file prior to the replacement.

The backup must be taken before performing any operation on the system. For detailed information, refer to Restoring SBC Configuration.

Perform a Graceful Shutdown

Perform the following steps to gracefully shut down the SBC.

  1. Shutdown host power using the BMC GUI Power Control.
  2. Shutdown BMC power [SSH to the BMC console and execute shutdown -h now command].
  3. Unplug the various connections including the power from the system.

  4. Remove the power supplies and any DSP cards from the chassis.

Check Physical Access to the Failed Chassis

Perform the following checks on all systems:

  1. Rack front and back doors are unlocked and can be opened.
  2. There is adequate space in front of the rack to pull the chassis out of the rack.
  3. The front bezel can be removed.
  4. There is adequate space to remove the chassis mounting screws.
  5. Space in front of the rack is free of cabling which would obstruct removal of the chassis.


Do not continue this RMA procedure until all the above criteria are met.

Check Cable Labeling

Check whether all cables connected to the failed chassis are labeled correctly with the corresponding port information for unique identification during the HW swap from the failed chassis to the new chassis, and correct as needed. Label the cables that are not labeled.

  • 1x alarm port
  • 4x management port
  • 4x packet port
  • 2x high availability port
  • 1x BMC Serial Port
  • 1x BMC Field Service Port
  • 2x power


SBC 5400 rear view


Unpack the Container

Carefully remove the contents from the shipping container, and check each item for damage. SBC 5400 is shipped with the items listed below. If any item is missing or damaged, contact your Ribbon representative for support.

Package Contents:


  • Chassis including the CRUs
  • Accessory Kit contains the following items:
    • ESD wrist strap
    • Chassis ground lug
    • Two AC or two DC power cables (Either of them are shipped based on the customer requirement)
    • Screws and hardware for the rack mount includes - Kit for 19 inch and 23 inch four post rack mount, flat washers, lock washers and nuts
    • Serial port connection cable
    • Alarm port kit connector

Power Off the Failed Chassis

Choose the procedure associated with the type of power source you use:

Disconnect from AC Power Source

The following procedure explains how to disconnect from your local AC power source:

  1. Turn off your local AC power source.
  2. Remove the power cord.

Disconnect from DC Power Source

The following procedure explains how to disconnect from DC power:

  1. Turn off your local DC power source.
  2. Remove the Terminal connections.

Disconnect the Chassis Ground

The following procedure explains how to disconnect the chassis ground from the SBC 5400 using a 7/16 inch wrench:

  1. Locate the chassis grounding studs on the back of the chassis.
  2. Remove the two hex nuts and four washers.
  3. Remove Ground Cable.
  4. Replace the two hex nuts and four washers.

For detailed information on disconnecting chassis ground, refer to the section "Grounding  Chassis" in Connecting Power to SBC 5400 and Powering On.

For graceful shutdown of the system, refer to the section Graceful Shutdown of the System.

Remove Components

The new chassis does not include power supplies or SFPs. Transfer any usable CRUs from the failed chassis to the new chassis, as needed. Contact your Ribbon representative in case of missing components.

When removing electronic components, the threat of electrostatic discharge (ESD) damage is always present. Ensure you wear an ESD wrist strap before installing/removing any electronic components.

Refer to Connecting ESD Wrist Strap for help with attaching the ESD wrist strap to prevent damage to the equipment.


Remove the SSD Hard Drive

To remove the SSD hard drive from the chassis, refer to SBC 5400 Solid State Drive.

Remove the SFPs

The SFPs are not included in a new chassis delivery. Remove the SFPs before the chassis replacement and keep them in a safe location free from dirt and ESD. To remove the SFPs from the chassis, refer to SBC 5400 SFPs.

Remove the Power Supplies

The power supplies are not a part of the chassis delivery. They must be removed and kept in a safe place until the chassis is replaced. To remove the AC and DC power supplies, refer to sections Replacing SBC 5XXX-PSUAC (451-01025) AC Power Supplies and SBC 5400 DC Power Supply.

Remove the DSP Cards from the Failed Chassis

For detailed information on removing the DSP cards, refer to the sections SBC 5400 DSP20 Module and SBC 5400 DSP25 Module.

Remove the Failed Chassis from the Rack

Removing the failed  chassis contains these steps:

  1. Disconnect the Rack Rear Support from the Rack Adapter Brackets by removing two Philips screws on each side of the . 

    Do not remove screws attaching the Rack Adapter Brackets to the rack until after removing the  chassis from the rack.

    Disconnecting Rack Adaptor Brackets

  2. Supporting the chassis from the bottom, remove the mounting hardware from the front rack ears. Slide the forward off the Rack Adapter Brackets. Remove the Rack Adapter brackets from the rack by removing the four rack mounting screws, two each side.

    Mounting brackets

Install the New License Bundle

The new license bundle must be applied on the currently standalone active system before powering on the replacement system with your SSD hard drive.

The licenses must be applied on the standalone active system before bringing up the replacement system online.

The new license bundle must contain the new serial number from the replacement chassis. Call Technical Support to re-generate the license. The serial number of the new chassis is necessary to generate the license. This number can be found on the sticker behind the front Bezel. Technical Support generates the license once the RMA is submitted.

Mount the New Chassis to the Rack

For details on rack mounting procedures, refer to Rack Mounting the SBC 5400 Chassis.

Connect the Chassis Ground

The following procedure explains how to connect the ground to the SBC 5400 using a 7/16 inch wrench:

  1. Locate the chassis grounding studs on the back of the chassis.

  2. Attach the two hole chassis ground lug PN 300-30016 to the  using two flat washers PN 510-00057, two split lock washers PN 510-00056, and two hex nuts PN 511-00046 as shown in the following figure.

    Chassis grounding lug location

Install the Power Supplies

Push both power supplies into the chassis until you hear a “click” sound.

For more information on installing the power supplies, refer to the sections Replacing SBC 5XXX-PSUAC (451-01025) AC Power Supplies and SBC 5400 DC Power Supply.

Install the SFPs

Push all SFPs into the chassis until you hear a “click” sound.

For more information on installing the SFPs, refer to the section SBC 5400 SFPs.

Install the SSD Hard Drive

The replacement chassis is shipped with a pre-installed SSD. When the chassis RMA is performed, the customer receives the SSD with a pre-installed older release. The procedure to install an SSD hard drive to the chassis is:

SSD Received with new Chassis:

  1. Connect the BMC and Management cables. For detailed information, refer to section Plug the Cables Back. 
  2. Configure the BMC address.   
  3. Update the BMC Firmware. 

  4. Configure the Management port IP addresses. 

  5. Update the BIOS Firmware.

    For more information, see section Firmware Configuration and Upgrade.

    The data on your SSD drive can be corrupted if the BMC and BIOS versions do not correspond to the version.

  6. Power off the chassis.

 Insert the Original SSD:

  1. Power off the chassis.
  2. Dismount the SSD drive from the new chassis.
  3. Push your SSD hard drive into the chassis.
  4. Screw in the screw holding the hard drive.
  5. After the chassis is rack mounted and the drive is inserted, you must attach the front bezel to the  by aligning 4 ball studs located on the bezel assembly to the ball stud sockets located on the  chassis. Apply equal forward pressure to the four corners of the bezel assembly until each of the four corners “click-in”.
  6. Connect the power again. For detailed information, refer to the section Connecting to Power and Power on the Switch.

Plug the Cables Back

Plug the required cables to the new chassis. Make sure all the cables are plugged in according to the labeling.

The BMC/Management cables must be connected before upgrading the BIOS and BMC.

The Packet cables must be connected once:

  1. The replacement system is completely configured (BIOS/BMC updated, original SSD inserted).
  2. The new license is already applied to the active SBC.

Connect to Power and Power on the Switch

The following procedure explains how to connect to the power and powering on the switch:

Connect to AC Power and Powering On

  1. Insert the end of the power cords to the  at the rear of the chassis as shown in this figure.
  2. Connect the supplied power cords to the local AC power source. 

  3. Turn on your local AC power source.

    Connecting the AC power supply

Connect to DC Power and Powering On

  1.  Remove the clear plastic terminal cover and re-secure the cover once the following connections have been made, as shown in next figure.
    • Connect Chassis ground to the Green cable
    • Connect Return to the Black cable
    • Connect -48V to the Red cable
  2. Connect the supplied DC power cables to the local DC power source.

  3. Turn on your local DC power source.

    Connecting the DC power supply

Install the DSP Cards

This is applicable for SBC 5400 series. For more information on DSP card installation, refer to the sections SBC 5400 DSP20 Module and SBC 5400 DSP25 Module.

Firmware Configuration and Upgrade

The installation process is divided into following parts. New license, BMC, and BIOS must be already installed or upgraded.

Assign BMC IP Address

Ribbon provides the pre-configured IP address “169.254.77.1” to facilitate out of the box access to the BMC web interface. Configure your PC to access the default BMC address “169.254.77.1”. To access the BMC web application, connect the Field Service Port to the PC configured with the pre-configured IP address and type the IP address in a web browser.

For details, refer to the section Configuring SBC 5400 BMC IP Address Via Serial Console or Launching the SBC 5400 BMC Remote Console.

Verify the Platform Software on the New System

Make sure you have access to the correct software code that the current active system is running.

Note:

Mount the USB and copy the software to the /opt/sonus/ directory of the replacement system.

Update the BMC Firmware

The BMC firmware is updated through the following steps:

  1. Obtaining the BMC firmware image from the Ribbon Support Portal and copying it to the local folder on the PC.
  2. Upgrading the firmware

For details, refer to the section Upgrading Firmware.

Configure the MGMT IP Addresses

The new chassis does not have management IP addresses configured. To configure management IP address, refer to Configuring SBC 5400 Host Network Management Interfaces.

Update the BIOS Firmware

The SBC application must be upgraded before using the old or the new SSD. For upgrading SBC application, refer to Upgrading Firmware.

Note:

In the SBC5400, BIOS upgrade is part of the BMC upgrade. That is, upgrading the BMC upgrades the BIOS as well. The BIOS firmware is part of the SBC application installation/upgrade package.

Note:

Install/Upgrade any platform software and then install the application software on the replacement system. For details, refer to the section Installing SBC 5400 Software.

An ISO (re-imaging) should be performed on every SBC received through Return Merchandise Authorization (RMA) process. To know more about re-installing ConnexIP OS, refer to SBC 5400 - Re-Installing ConnexIP Operating System.

During installation of the application, the local host role must be carefully entered. The local host role depends on what the system (being replaced) was originally configured for.  For example if it was originally the active system. So the local host role must be configured as active.

Check the Overall System Status

The system status can be checked by using EMA GUI or by CLI commands.

Using EMA GUI

For detailed information, refer to All - System.

Using CLI

The following commands must be executed to check the system status:

% show table system serverStatus
% show table system syncStatus 

For details, refer to the section Show Table System.

Note:

As part of the application install, the system will reboot. After reboot, the standby system starts to sync with the active system automatically. The sync process can take approximately 30 to 40 minutes. The sync and server status can be monitored through CLI/EMA/RAMP for the active system.

BMC Downgrade

There is no need to downgrade the BMC to a lower version if the delivered chassis is on a higher version of the BMC than what is tested, as the BMC is backward compatible. Contact Ribbon Global Product Support if you have any issues with compatibility.

Media Port speed

The media port speed is saved in the BMC. If the chassis is replaced, reconfigure media speed as required. 

You can change the Media speed irrespective of the OS/software installation procedure. Power off the host before changing media speed. To change media speed, refer to the procedure in SBC 5400 Chassis Replacement. After changing the speed, install the OS/software. If the app is already installed, it reconfigures the media speed automatically.