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CloudEngine 8800, 7800, 6800, and 5800 V200R002C50 Configuration Guide - Virtualization

This document describes the configurations of virtualization, including stack and SVF.
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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).
Verifying the SVF Configuration

Verifying the SVF Configuration

Context

After completing SVF configuration and connecting the parent and leaf switches, you can log in to a parent switch to check whether the SVF system is set up successfully.

Procedure

  • Run the display stack [ member member-id ] command to check information about SVF member switches.
  • Run the display stack configuration [ member member-id | all | leaf ] command to check the SVF configuration.
  • Run the display stack topology [ link | neighbor ] command to check SVF topology information.
  • Run the display stack troubleshooting [ member member-id ] [ history ] command to check the SVF fault events.
  • Run the display stack link-state last-down-reason command to check the reason why SVF link protocol is Down.
  • Run the display stack blocked-interface [ member member-id ] command to check packet congestion information on member ports of the fabric port.

Follow-up Procedure

  • During the setup of an SVF system, if the number of member switches exceeds the upper threshold (two switches) because of incorrect configuration or connection, excess parent devices cannot join the SVF system and ports of these parent devices will enter the Error-Down state (The device records the status of an interface as Error-Down when it detects that a fault occurs. The interface in Error-Down state cannot receive or send packets and the interface indicator is off.). In the following example, a service port is in Error-Down state.
    <HUAWEI> display interface 10ge 3/0/1
    10GE3/0/1 current state : ERROR DOWN(spine-member-exceed-limit) (ifindex: 12)
    Line protocol current state : DOWN     
    ......
    
    After ports of excess parent devices enter the Error-Down state, modify the configuration or connection to remove excess parent devices and then check whether the ports recover from the Error-Down state.
    You can recover ports from the Error-Down state using either of the following methods:
    • Manually recover ports from the Error-Down state (after the ports become Error-Down).

      • Run the shutdown and then undo shutdown commands or run the restart command on each port to restart the port.

      • Run the reboot command to restart a member switch to recover all the ports from the Error-Down state.

    • Enable ports to automatically recover from the Error-Down state (before the ports become Error-Down).

      To enable service ports to automatically recover from the Error-Down state, run the error-down auto-recovery cause spine-member-exceed-limit interval interval-value command in the system view to enable ports in Error-Down state to become Up automatically and set the delay after which ports become Up automatically.

      NOTE:

      This method takes effect only for the ports that become Error-Down after this command is executed but not for those that have been in Error-Down state before this command is executed.

  • If a switch that cannot function as a parent switch attempts to join the stack set up by an SVF parent switch, service ports of this switch will enter the Error-Down state (The device records the status of an interface as Error-Down when it detects that a fault occurs. The interface in Error-Down state cannot receive or send packets and the interface indicator is off.). In the following example, a service port is in Error-Down state.
    <HUAWEI> display interface 10ge 3/0/1
    10GE3/0/1 current state : ERROR DOWN(spine-type-unsupported) (ifindex: 12)
    Line protocol current state : DOWN     
    ......
    
    If ports of a switch enter the Error-Down state, you are advised to remove the cable between the switch and the SVF system first.
    You can recover ports from the Error-Down state using either of the following methods:
    • Manually recover ports from the Error-Down state (after the ports become Error-Down).

      • Run the shutdown and then undo shutdown commands or run the restart command on each port to restart the port.

      • Run the reboot command to restart a member switch to recover all the ports from the Error-Down state.

    • Enable ports to automatically recover from the Error-Down state (before the ports become Error-Down).

      To enable service ports to automatically recover from the Error-Down state, run the error-down auto-recovery cause spine-type-unsupported interval interval-value command in the system view to enable ports in Error-Down state to become Up automatically and set the delay after which ports become Up automatically.

      NOTE:

      This method takes effect only for the ports that become Error-Down after this command is executed but not for those that have been in Error-Down state before this command is executed.

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Updated: 2019-04-20

Document ID: EDOC1000166645

Views: 38996

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