Switch Module Quick Recovery Method

A switch module fails to be started. After the login to the switch module over SOL, the SOL screen shows Can not get config file from smm. Begin reboot ....

1. Switch between active and standby MM910s and check whether the switch module can be properly started.
   • If yes, no further action is required.
   • If no, go to 2.
2. Restart the baseboard management controller (BMC) of the switch module and check whether the switch module can be properly started.
   • If yes, no further action is required.
   • If no, go to 3.
3. Upgrade the switch module software to its latest version. For details, see the (Optional) Upgrading Software by Using U-Boot section in the Common Operations chapter of the E9000 Server V100R001 Upgrade Guide.

A switch module fails to be started. After the login to the switch module over SOL, the SOL screen shows Ensure that the optical fibers or cables are inserted on the same ports on the panel after the board replacement. During system startup, do not power off or remove the board. To continue the startup, press Y:.

1. If services are running, connect the network cable or optical fiber to the switch module and press Y to continue the startup.
2. If no services are running, press Y to continue the startup.

After the login to a switch module over SOL, the SOL screen shows Critical Error! and only the meth port is displayed by running display interface.

Upgrade the switch module software to a specified version or the latest version according to the displayed message.

A network storm occurs (Mulcast and Broadcast counters of a port encounter a fault).

Perform one of the following operations:

• Run the following commands to disable the port with abnormal traffic:

  [~HUAWEI]interface 10ge 1/17/1

  [~HUAWEI-10ge 1/17/1]shutdown

• Disconnect the optical fiber or network cable from the port with abnormal traffic.

A port is Up but no traffic passes through the port.

1. On the command-line interface (CLI) of the port, run the following commands and check whether the fault is rectified:

   [~HUAWEI]interface 10ge 1/17/1

   [~HUAWEI-10ge 1/17/1]restart

   • If yes, no further action is required.
   • If no, go to 2.
2. Run the reboot command to restart the switch module.

Incorrect packets are generated (running the display interface command shows that the value of Total Error in the Input area is not zero and keeps increasing).

Run the display interface command and check CRC and Symbols.

1. If the values of CRC and Symbols are not zero, perform the following operations:
   • Check whether the optical fibers are properly connected to the faulty switch module and its directly connected device.
   • Check whether any optical fiber is damaged.
   • Check whether the optical modules of the faulty switch module and its directly connected device are working properly.
   • If there is a transmission device between the switch module and its connected device, check the transmission device gateway for alarms about the transmission device.
2. If the values of CRC and Symbols are zero, run the reboot command to restart the switch module.