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FusionStorage OBS 7.0 Parts Replacement 05

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Replacing a Switch

Replacing a Switch

The procedures for replacing a GE, 10GE, and 25GE switch are similar. This section describes how to replace a 10GE switch as an example.

Impact on the System

Before replacing a switch, you must power off the switch. In non-stacked deployment scenarios, this will adversely affect the services running on storage nodes.

Prerequisites

  • A spare switch is available. The type of the spare switch is the same as that of the faulty switch.
  • The faulty switch has been located.
  • The cable connections on the faulty switch have been clearly marked.
  • You have obtained the serial port login password of the other stacked switch that runs properly.

Precautions

None

Tools and Materials

  • Phillips screwdriver (M3 to M6)

  • ESD wrist strap
  • ESD bag
  • ESD table
  • Label
  • Console cable, used to configure switches. One end of the console cable is an RJ-45 port, and the other end is a DB-9 port (connecting to an installation PC). If the installation PC has no serial port, prepare a USB-to-serial cable.

Replacement Process

Replace a switch by following the process shown in Figure 23-1.
Figure 23-1 Switch replacement process

Procedure

  1. Check whether the following alarms related to the network port of another stacked switch that runs properly are generated:

    • Faulty network ports on the device
    • Inconsistent network port rates
    • Excessively high packet error rate on network ports of the device
    • Excessively high packet loss rate on network ports of the device
    • Heavy traffic on network ports of the device
    • Failure to parse the ARP of the network ports on the device
    • Abnormal transmit optical power of the optical module

    If any alarm is generated, rectify the fault according to the suggestions.

  2. Power off the faulty switch.

    1. Power off the switch.

      Ensure that you have powered off the faulty stacked switch. If the stacked switch running properly is powered off by mistake, the online services of the system are affected.

    2. Remove the cables connected to the faulty switch.
      NOTE:

      For the ground cable of the switch, you only need to remove the end connected to the cabinet in this step. The other end of the ground cable is secured to the side of the switch and will be removed after the switch is removed from the rack.

  3. Remove the switch.

    1. Use a Phillips screwdriver to remove the M6 screws from the mounting ears of the switch, as shown in step 1 in Figure 23-2.
      Figure 23-2 Removing a switch
    2. Pull the switch out of the cabinet along the guide rails and place it on an ESD table, as shown in step 2 in Figure 23-2.
    3. Use a Phillips screwdriver to remove the ground cable from the side of the switch, as shown in step 1 in Figure 23-3.
      Figure 23-3 Removing the ground cable and mounting ears
    4. Use a Phillips screwdriver to remove the left and right mounting ears of the switch, as shown in step 2 in Figure 23-3.
    5. Place the removed switch in an ESD bag.

  4. Install the spare switch.

    1. Take the spare switch out of its ESD bag and place it on the ESD table.
    2. Use a Phillips screwdriver to install the ground cable on the side of the switch, as shown in step 1 in Figure 23-4.
      Figure 23-4 Installing the ground cable and mounting ears
    3. Use a Phillips screwdriver to install the left and right mounting ears of the switch, as shown in step 2 in Figure 23-4.
    4. Slide the switch into the cabinet along the guide rails, as shown in step 1 in Figure 23-5.
      Figure 23-5 Installing a switch
    5. Secure the switch to the cabinet using M6 screws, as shown in step 2 in Figure 23-5.

  5. Query the version and stack parameters of the other stacked switch.

    1. Log in to the stacked switch that runs properly through the CONSOLE port.

      Set Bits per second to 9600, Data bits to 8, Stop bits to 1, Parity to None, and Flow control to None. By default, no authentication is performed.

    2. Enter the password for logging in to the switch through the serial port.
    3. Run the display version command to query the version of the switch, that is, the character string after Version, and record the value. The following information is for reference only.
      <HUAWEI>display version
      Huawei Versatile Routing Platform Software
      VRP (R) software, Version 8.80 (CE6855 V100R003C00SPC500)
      ......
    4. Run the display stack command to query the stack priority and member ID of the switch, that is, the values of Priority and MemberID, and record the values.
      <HUAWEI>display stack
      ----------------------------------------------------------------
      MemberID Role     MAC              Priority   Device Type
      ----------------------------------------------------------------
      1        Master   XXXX-XXXX-XXXX   200        CE6855-48S6Q-HI
      ----------------------------------------------------------------
      ......

  6. Check the version of the spare switch.

    1. Connect the power cable and console communication cable of the spare switch and power on the switch.

      In this step, you only need to connect the power cable and console communication cable of the switch. Do not connect other signal cables to the switch.

    2. Log in to the spare switch through the console port. Set a serial port login password upon your first login. The password must be the same as that of the other stacked switch.

      If the following message is displayed, press Ctrl+C.

      USB discovery phase started...
      Press CTRL+C to abort Zero Touch Provisioning in 10 seconds... 

      Enter your password as prompted. The following information is for reference only.

      An initial password is required for the first login via the console.
      Continue to set it? [Y/N]: Y
      Set a password and keep it safe! Otherwise you will not be able to login via the console.                                                                         Please configure the login password (8-16)
      Enter Password:
      Confirm Password: 
    3. Run the display version command and check whether the switch version is the same as that of the other stacked switch. If no, update the version of the spare switch to the same version as that of the other stacked switch.

      For details about how to update the switch version, see the switch product documentation.

  7. Configure stack parameters for the spare switch.

    1. The stack priority needs to be set to the priority as that of the other stacked switch minus 10. For example, if the priority of the other stacked switch is 200, set the priority of the spare switch to 190.

      The stack member number must be the same as that of the faulty switch.

      • If the member number of the other stacked switch is 1, set the member number of the spare switch to 2.
      • If the member number of the other stacked switch is 2, set the member number of the spare switch to 1.
      #Enter the system view.
      <HUAWEI>system-view
      #Enter the stack management view.
      [~HUAWEI]stack
      #Configure the stack member ID, priority, and stack domain ID.
      #The stack member ID configured here is the same as that of the faulty switch. The stack member ID of the faulty switch is assumed to be 2 in this example.
      [~HUAWEI-stack]stack member 1 renumber 2 inherit-config
      [~HUAWEI-stack]stack member 1 priority 190
      [*HUAWEI-stack]stack member 1 domain 10
      [*HUAWEI-stack]quit
      [*HUAWEI]commit
      #Create a stack port. 
      [~HUAWEI]interface stack-port 1/1
      #Set physical ports as stack ports. The start and end stack port numbers must be consistent with physical connections.
      [*HUAWEI-Stack-Port1/1]port member-group interface 10ge 1/0/1 to 1/0/2
      [*HUAWEI-Stack-Port1/1]quit
      [*HUAWEI]commit
      [~HUAWEI]quit
      <HUAWEI>save
      Warning: The current configuration will be written to the device. Continue? [Y/N]:Y
      Info: Please input the file name(*.cfg, *.zip, *.dat)[vrpcfg.zip]:
      Now saving the current configuration to the slot 1
      Info: Save the configuration successfully.
      #Restart the switch. The restart takes approximately 5 minutes. 
      <HUAWEI>reboot ...
      Warning: The system will reboot. Continue? [Y/N]:Y
      ...
    2. Wait until the spare switch restarts and log in to the switch to view stack parameters.
      <HUAWEI>display stack
      ----------------------------------------------------------------
      MemberID Role     MAC              Priority   Device Type
      ----------------------------------------------------------------
      2       Standby    XXXX-XXXX-XXXX   190        CE6855-48S6Q-HI
      ......
    3. Power off the spare switch.

  8. Connect all signal cables and power cables to the spare switch according to cable lables, and power on the spare switch.
  9. Verify the configuration.

    After the power indicator is steady on, run the following command to verify the configuration:
    <HUAWEI>display stack
    ----------------------------------------------------------------
    MemberID Role     MAC              Priority   Device Type
    ----------------------------------------------------------------
    1        Master   XXXX-XXXX-XXXX   200        CE6855-48S6Q-HI
    2        Standby  XXXX-XXXX-XXXX   190        CE6855-48S6Q-HI
    ----------------------------------------------------------------
    <HUAWEI>display stack topology
    Stack Topology:
    ----------------------------------------------
                Stack-Port 1      Stack-Port 2                                       
    MemberID   Status Neighbor   Status Neighbor
    ----------------------------------------------
    1          up     2          --     --
    2          up     1          --     --
    ---------------------------------------------- 
    
    Stack Link:
    ----------------------------------------------------------------------------
    Stack-Port       Port               Status     PeerPort           PeerStatus
    ---------------------------------------------------------------------------- 
    Stack-Port1/1    10GE1/0/1          up         10GE2/0/1          up
    Stack-Port1/1    10GE1/0/2          up         10GE2/0/2          up
    Stack-Port2/1    10GE2/0/1          up         10GE1/0/1          up
    Stack-Port2/1    10GE2/0/2          up         10GE1/0/2          up
    ----------------------------------------------------------------------------   

    When records about two switches are displayed and their stack member IDs, stack priority, stack ports are the same as the prior settings, the stack is successfully configured.

  10. Check whether the following alarms are generated on the switches:

    • Faulty network ports on the device
    • Inconsistent network port rates
    • Excessively high packet error rate on network ports of the device
    • Excessively high packet loss rate on network ports of the device
    • Heavy traffic on network ports of the device
    • Failure to parse the ARP of the network ports on the device
    • Abnormal transmit optical power of the optical module

    If any alarm is generated, rectify the fault according to the suggestions.

Follow-up Procedure

After the switch is replaced, label it to facilitate subsequent operations.

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Updated: 2019-07-05

Document ID: EDOC1100051325

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