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ME60 Troubleshooting Guide V1.0 (VRPv8)

This document provides the maintenance guide of the device, including daily maintenance, emergence maintenance, and typical troubleshooting.
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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).
Client Fails to Obtain an IPv4 Address Troubleshooting

Client Fails to Obtain an IPv4 Address Troubleshooting

An Ethernet Client Fails to Obtain an IP Address (the HUAWEI ME60 Functions as the DHCP Server)

This section describes the troubleshooting flowchart and provides a step-by-step troubleshooting procedure for the fault that an Ethernet client fails to obtain an IP address when the HUAWEI ME60 functions as the DHCP server.

Common Causes

This fault is commonly caused by one of the following:

  • DHCP is not enabled.
  • The IP address of the interface connecting to the client is incorrect, or the IP address pool whose gateway is the same as the IP address of the interface connecting to the client does not exist.
  • The IP address pool is incorrectly configured. For example, the IP address pool is configured to be the Server or Remote type, or the IP address pool is locked.
  • The IP address pool has no assignable IP address.
  • The link between the DHCP server and the client is faulty.
  • Another device along the link is incorrectly configured.
Troubleshooting Flowchart

When the HUAWEI ME60 functions as the DHCP server, a PPPoX/IPoX client cannot obtain an IP address.

The troubleshooting roadmap is as follows:
  • Check that the IP address pool of the DHCP server is correctly configured and IP addresses can be assigned.
  • Check the link between the DHCP server and the client is normal.
  • Check that other devices along the link are correctly configured.

Figure 4-143 shows the troubleshooting flowchart.

Figure 4-143 Troubleshooting flowchart for the fault that an Ethernet client fails to obtain an IP address (the HUAWEI ME60 functions as the DHCP server)

Troubleshooting Procedure

Before performing the following procedure, you can also refer to common causes for users fail to get online to solve this fault.

NOTE:
Saving the results of each troubleshooting step is recommended. If your troubleshooting fails to correct the fault, you will have a record of your actions to provide Huawei technical support personnel.

Procedure

  1. Check that the DHCP function is enabled.

    Run the display current-configuration | include undo dhcp enable command to check whether the DHCP function is enabled. By default, the DHCP function is enabled.

    • If the command output shows undo dhcp enable, it indicates that the DHCP function is disabled, and you need to run the dhcp enable command to enable the DHCP function.
    • If there is no command output, it indicates that the DHCP function is enabled. Then, go to Step 2.
  2. Check that the interface connecting to the client is configured with a correct IP address.

    Run the display this command in the view of the interface connecting to the client to check whether an IP address is configured for the interface.

    • If the IP address is incorrect or no IP address is configured, run the ip address ip-address command to correctly configure an IP address.
    • If the IP address is correct, go to Step 3.
  3. Check that the IP address pool is correctly configured.

    Run the display current-configuration filter gateway ip-address mask command to check whether there is a local IP address pool whose IP addresses belong to the same network segment with the gateway (relay access) or with the IP address of an interface (non-relay access).

    • If there is no command output, it indicates that the IP address pool does not exist. In this case, run the following commands.
      • Run the ip pool pool-name server command to create an IP address pool.
      • Run the gateway ip-address { mask | mask-length } command to create the gateway of the IP address pool.
      • Run the section section-num start-ip-address [ end-ip-address ] to configure the range of assignable IP addresses.
      For detailed configurations of the IP address pool, refer to the HUAWEI ME60 Configuration Guide - User Access.
    • If the correct IP address pool exists, go to Step 4.
  4. Check that the IP address pool is correctly configured and IP addresses can be assigned.

    Run the display ip pool name pool-name command to check whether the corresponding fields have the correct values based on the following check steps. If any field has an incorrect value, rectify the fault based on the following rectification procedure.

    Item

    Field

    Correct Value

    Restoration Procedure

    Check whether the type of the IP address pool is Server.

    Position

    Server

    If the field is displayed as Local or Remote, run the ip pool pool-name bas remote command again to set the IP address pool to the Server type.

    Check whether the IP address pool is locked.

    Status

    Unlocked

    If the field is displayed as Locked, run the undo lock command to unlock the IP address pool.

    Check whether the IP address pool has assignable IP addresses.

    idle

    conflicted

    If the idle field is displayed as a value larger than 0, it indicates that assignable IP addresses exist in the IP address pool.

    If the conflicted field is displayed as 0, it indicates that there are no conflicting IP addresses.

    • If there are conflicting IP addresses, run the reset conflict-ip-address command to mark the conflicting IP addresses as idle.
    • Re-plan the network and increase the number of IP addresses in the IP address pool.

    After the preceding steps, if the client still cannot acquire an IP address, go to Step 5.

  5. Check that the link between the DHCP server and the client is normal.

    On the client, configure an IP address to make the client and the IP address pool of the DHCP server on the same network segment (note that the IP address of the client cannot conflict with an assigned IP address). Then, ping the IP address on the DHCP server to check whether the link between the DHCP server and the client is normal.

    • If the ping operation fails, it indicates that a routing fault occurs between the DHCP server and the client, and you need to rectify the fault immediately.

    • If the ping operation succeeds, go to Step 6.

  6. Check that the configurations of other devices along the link are correct, including the DHCP relay, DSLAM, LAN switch, and the client.

    Check whether the configurations of these devices are correct based on the device manuals. If not, modify the configurations. After the preceding steps, if the client still cannot acquire an IP address, go to Step 7.

  7. Collect the following information and contact Huawei technical support personnel.

    • Results of the preceding troubleshooting procedure
    • Configuration files, log files, and alarm files of the devices

Relevant Alarms and Logs

Relevant Alarms

None.

Relevant Logs

None.

An Ethernet Client Cannot Obtain an IP Address (the HUAWEI ME60 Functions as the DHCP Relay)

This section describes the troubleshooting flowchart and provides a step-by-step troubleshooting procedure for the fault that an Ethernet client fails to obtain an IP address when the HUAWEI ME60 functions as the DHCP relay.

Common Causes

This fault is commonly caused by one of the following:

  • DHCP relay is not enabled.
  • Incorrect DHCP option number, relay agent address, or DHCP server address is configured.
  • The link between the DHCP relay and the DHCP server or between the DHCP relay and the client is faulty.
  • Another device along the link is incorrectly configured.
Troubleshooting Flowchart

When the HUAWEI ME60 functions as the DHCP relay, an Ethernet client enabled with DHCPv4 cannot obtain an IP address.

The troubleshooting roadmap is as follows:
  • Check that the DHCP relay is correctly configured.
  • Check the link connectivity between the DHCP relay and the DHCP server or between the DHCP relay and the client.
  • Check that other devices along the link are correctly configured.

Figure 4-144 shows the troubleshooting flowchart.

Figure 4-144 Troubleshooting flowchart for the fault that an Ethernet client fails to obtain an IP address (the HUAWEI ME60 functions as the DHCP relay)

Troubleshooting Procedure

Before performing the following procedure, you can also refer to common causes for users fail to get online to solve this fault.

NOTE:
Saving the results of each troubleshooting step is recommended. If your troubleshooting fails to correct the fault, you will have a record of your actions to provide Huawei technical support personnel.

Procedure

  1. Check that the DHCP function is enabled.

    Run the display current-configuration | include undo dhcp enable command to check whether the DHCP function is enabled. By default, the DHCP function is enabled.

    • If the command output shows undo dhcp enable, it indicates that the DHCP function is disabled, and you need to run the dhcp enable command to enable the DHCP function.
    • If there is no command output, it indicates that the DHCP function is enabled. Then, go to step 2.
  2. Check that the DHCP relay function is enabled and correct attributes are configured.

    Run the display dhcp relay address interface interface-type interface-number command.

    • If there is no command output, it indicates that the DHCP relay function is disabled or the IP address of the DHCP server is not configured. Therefore, run the dhcp select relay command to enable the DHCP relay function, and then run the ip relay address command to configure the IP address of the DHCP server.
    • If the field, Dhcp Option (DHCP option number), Relay Agent IP (IP address of the relay agent), or Server IP (IP address of the DHCP server), is incorrectly displayed, run the ip relay address command to modify the relevant attribute.
    • If all these fields are correctly displayed, go to step 2.
  3. Check that the link between the DHCP relay and the DHCP server is normal.

    Run the ping -a source-ip-address destination-ip-address command on the DHCP relay. source-ip-address indicates the IP address of the interface on the DHCP relay connecting to a client, and destination-ip-address indicates the IP address of the DHCP server.

    • If the ping operation fails, it indicates that a routing fault occurs between the DHCP relay and the DHCP server, and you need to rectify the fault immediately.

    • If the ping operation succeeds, go to step 3.

  4. Check that the link between the DHCP relay and the client is normal.

    On the client end, configure an IP address to make the client and the DHCP relay on the same network segment (note that the IP address of the client cannot conflict with an assigned IP address). Then, ping the IP address on the DHCP relay to check whether the link between the DHCP relay and the client is normal.

    • If the ping operation fails, it indicates that a routing fault occurs between the DHCP relay and the client, and you need to rectify the fault immediately.

    • If the ping operation succeeds, go to step 5.

  5. Check that configurations of other devices along the link are correct, including the DHCP server, DSLAM, LAN switch, and the client.

    Check whether the configurations of these devices are correct based on the device manuals. If not, modify the configurations. After the preceding steps, if the client still cannot acquire an IP address, go to step 6.

  6. Collect the following information and contact Huawei technical support personnel.

    • Results of the preceding troubleshooting procedure.
    • Configuration files, log files, and alarm files of the devices.

Relevant Alarms and Logs

Relevant Alarms

None.

Relevant Logs

None.

A PPPoX/IPoX Client Fails to Obtain an IP Address (the HUAWEI ME60 Functions as the DHCP Server)

This section describes the troubleshooting flowchart and provides a step-by-step troubleshooting procedure for the fault that a PPPoX/IPoX client fails to obtain an IP address when the HUAWEI ME60 functions as the DHCP server.

Common Causes

This fault is commonly caused by one of the following:

  • The client is bound to an incorrect domain.
  • The IP address pool is incorrectly configured. For example, the IP address pool is configured to be the Server or Remote type, or the IP address pool is locked.
  • The IP address pool has no assignable IP address.
  • The BAS interface is incorrectly configured.
  • The link between the DHCP server and the client is faulty.
  • Another device along the link is incorrectly configured.
Troubleshooting Flowchart

When the HUAWEI ME60 functions as the DHCP server, a PPPoX/IPoX client enabled with DHCPv4 cannot obtain an IP address.

The troubleshooting roadmap is as follows:
  • Check that the IP address pool and BAS interface of the DHCP server are correctly configured and IP addresses can be assigned.
  • Check the link connectivity between the DHCP server and the client.
  • Check that other devices along the link are correctly configured.

Figure 4-145 shows the troubleshooting flowchart.

Figure 4-145 Troubleshooting flowchart for the fault that a PPPoX/IPoX client cannot obtain an IP address (the HUAWEI ME60 functions as the DHCP server)

Troubleshooting Procedure

Before performing the following procedure, you can also refer to common causes for users fail to get online to solve this fault.

NOTE:
Saving the results of each troubleshooting step is recommended. If your troubleshooting fails to correct the fault, you will have a record of your actions to provide Huawei technical support personnel.

Procedure

  1. Check that the interface connecting to the client is bound to the correct domain.

    Run the display this command on the interface to check whether the interface is bound to the correct domain.

    • If the incorrect domain is bound, run the default-domain authentication domain-name command to bind the interface to the correct domain.
    • If the correct domain is bound, go to Step 2.
  2. Check that the domain is bound to a correct IP address pool.

    Run the display domain domain-name command to check the IP-address-pool-name field to see whether the correct IP address pool is bound.

    • If the incorrect IP address pool is bound, run the ip-pool pool-name command to bind the domain to the correct IP address pool.
      NOTE:
      The IP address pool specified by pool-name must be created in advance. Details are as follows:
      • Run the ip pool pool-name bas local command to create an IP address pool.
      • Run the gateway ip-address { mask | mask-length } command to create the gateway of the IP address pool.
      • Run the section section-num start-ip-address [ end-ip-address ] to configure the range of assignable IP addresses.

      For detailed configurations of the IP address pool, refer to the HUAWEI ME60 Configuration Guide - User Access.

    • If the correct IP address pool is bound, go to Step 3.
  3. Check that the IP address pool is correctly configured and IP addresses can be assigned.

    Run the display ip pool name pool-name command to check whether the corresponding fields have the correct values based on the following check steps. If any field has the incorrect value, rectify the fault based on the following procedure.

    Item

    Field

    Correct Value

    Restoration Procedure

    Check whether the type of the IP address pool is Local.

    Position

    Local

    If the field is displayed as Remote or Server, run the ip pool pool-name bas local command again to configure the IP address pool to the Local type.

    Check whether the IP address pool is locked.

    Status

    Unlocked

    If the field is displayed as Locked, run the undo lock command to unlock the IP address pool.

    Check whether the IP address pool has assignable IP addresses.

    idle

    conflicted

    If the idle field is displayed as a value larger than 0, it indicates that assignable IP addresses exist in the IP address pool.

    If the conflicted field is displayed as 0, it indicates that there are no conflicting IP addresses.

    • If there are conflicting IP addresses, run the reset conflict-ip-address command to mark the conflicting IP addresses as idle.
    • Re-plan the network and increase the number of IP addresses in the IP address pool.

    After the preceding steps, if the client still cannot acquire an IP address, go to Step 4.

  4. Check that the interface at the client side and the BAS are correctly configured.

    For detailed configurations of BAS, refer to the HUAWEI ME60 Configuration Guide - User Access. After the preceding steps, if the client still cannot acquire an IP address, go to Step 5.

  5. Check that the link between the DHCP server and the client is normal.

    On the client, configure an IP address to make the client and the IP address pool of the DHCP server on the same network segment (note that the IP address of the client cannot conflict with an assigned IP address). Then, ping the IP address on the DHCP server to check whether the link between the DHCP server and the client is normal.

    • If the ping operation fails, it indicates that a routing fault occurs between the DHCP server and the client, and you need to rectify the fault immediately.

    • If the ping operation succeeds, go to Step 6.

  6. Check that the configurations of other devices along the link are correct, including the DHCP relay, DSLAM, LAN switch, and the client.

    Check whether the configurations of these devices are correct. If not, modify the configurations. After the preceding steps, if the client still cannot acquire an IP address, go to Step 7.

  7. Collect the following information and contact Huawei technical support personnel.

    • Results of the preceding troubleshooting procedure
    • Configuration files, log files, and alarm files of the devices

Relevant Alarms and Logs

Relevant Alarms

None.

Relevant Logs

None.

A PPPoX/IPoX Client Cannot Obtain an IP Address (the HUAWEI ME60 Functions as the DHCP Relay)

This section describes the troubleshooting flowchart and provides a step-by-step troubleshooting procedure for the fault that a PPPoX/IPoX client cannot obtain an IP address when the HUAWEI ME60 functions as the DHCP relay.

Common Causes

This fault is commonly caused by one of the following:

  • The client is bound to an incorrect domain.
  • The IP address pool is incorrectly configured. For example, the IP address pool is configured to be the Server or Remote type, the IP address pool is locked, or the IP address of the DHCP server is incorrect.
  • The IP address pool has no assignable IP address.
  • The BAS interface is incorrectly configured.
  • The link between the DHCP relay and the DHCP server or between the DHCP relay and the client is faulty.
  • Another device along the link is incorrectly configured.
Troubleshooting Flowchart

When the HUAWEI ME60 functions as the DHCP relay, a PPPoX/IPoX client enabled with DHCPv4 cannot obtain an IP address.

The troubleshooting roadmap is as follows:
  • Check that the IP address pool and BAS interface of the DHCP relay are correctly configured.
  • Check the link connectivity between the DHCP relay and the DHCP server or between the DHCP relay and the client.
  • Check that other devices along the link are correctly configured.

Figure 4-146 shows the troubleshooting flowchart.

Figure 4-146 Troubleshooting flowchart for the fault that a PPPoX/IPoX client cannot obtain an IP address (the HUAWEI ME60 functions as the DHCP relay)

Troubleshooting Procedure

Before performing the following procedure, you can also refer to common causes for users fail to get online to solve this fault.

NOTE:
Saving the results of each troubleshooting step is recommended. If your troubleshooting fails to correct the fault, you will have a record of your actions to provide Huawei technical support personnel.

Procedure

  1. Check that the interface on the user end is bound to the correct domain.

    Run the display this command on the interface to check whether the interface is bound to the correct domain.

    • If the incorrect domain is bound, run the default-domain authentication domain-name command to bind the interface to the correct domain.
    • If the correct domain is bound, go to Step 2.
  2. Check that the domain is bound to a correct IP address pool.

    Run the display domain domain-name command to check the IP-address-pool-name field to see whether the bound IP address pool is correct.

    • If the incorrect IP address pool is bound, run the ip-pool pool-name command to bind the domain to the correct IP address pool.
      NOTE:
      The IP address pool specified by pool-name must be created in advance. Details are as follows:
      • Run the ip pool pool-name remote command to create an IP address pool.
      • Run the gateway ip-address { mask | mask-length } command to create the gateway of the IP address pool.
      • Run the dhcp-server group group-name command to configure the DHCP server group.

      For detailed configurations of the IP address pool, refer to the HUAWEI ME60 Configuration Guide - User Access.

    • If the correct IP address pool is bound, go to Step 3.
  3. Check that the IP address pool and the IP address of the DHCP server are correctly configured.

    Run the display ip pool name pool-name command to check whether values of the corresponding fields are correct. If any field is displayed with an incorrect value, rectify the fault based on the following rectification procedure.

    Item

    Field

    Correct Value

    Restoration Procedure

    Check whether the IP address pool is a remote IP address pool.

    Position

    Remote

    If the field is displayed as Local or Server, run the ip pool pool-name bas remote command again to configure the IP address pool to the Remote type.

    Check whether the IP address pool is locked.

    Status

    Unlocked

    If the field is displayed as Locked, run the undo lock command to unlock the IP address pool.

    Check whether the IP address pool is configured with an correct DHCP server address.

    1. Run the display ip pool name pool-name command to view the DHCP-Group field.
    2. Then, run the display dhcp-server group group-name command to view the Primary-Server and Secondary-Server fields.

    Correct DHCP server name and address

    • If the DHCP server group is incorrectly configured for the IP address pool, configure it correctly by running the dhcp-server group group-name command.
    • If the DHCP server address is incorrectly configured for the IP address pool, configure it correctly by running the dhcp-server ip-address command.

    After the preceding steps, if the client still cannot acquire an IP address, go to Step 4.

  4. Check that the interface at the client side and BAS are correctly configured.

    For detailed configurations of BAS, refer to the HUAWEI ME60 Configuration Guide - User Access. After the preceding steps, if the client still cannot acquire an IP address, go to Step 5.

  5. Check that the links between the DHCP relay and the DHCP server and between the DHCP relay and the client are normal.

    Run the ping command on the DHCP relay to check whether the route between the DHCP server and the client is normal.

    NOTE:

    Since the client cannot acquire an IP address automatically, you need to first assign IP addresses of the same network segment to the interfaces between the client and the DHCP relay (note that the configured IP addresses cannot conflict with existing IP addresses).

    • If the ping operation fails, it indicates that a routing fault occurs, and you need to rectify the fault immediately.

    • If the ping operation succeeds, go to Step 6.

  6. Check that the configurations of other devices along the link are correct, including the DHCP relay, DSLAM, LAN switch, and the client.

    Check whether the configurations of these devices are correct. If not, modify the configurations. After the preceding steps, if the client still cannot acquire an IP address, go to Step 7.

  7. Collect the following information and contact Huawei technical support personnel.

    • Results of the preceding troubleshooting procedure
    • Configuration files, log files, and alarm files of the devices

Relevant Alarms and Logs

Relevant Alarms

None.

Relevant Logs

None.

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Updated: 2019-06-11

Document ID: EDOC1000175918

Views: 13558

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