The link type of an interface cannot be changed from hybrid to access. How is this problem solved

8

Before using the port link-type command to change the link type of an interface, restore the default configuration of the interface.

You can run the display this command in the interface view to view the interface configuration. Assume that the following configuration is used:
#
interface GigabitEthernet0/0/1
undo port hybrid vlan 1
port hybrid tagged vlan 10
#Run the port hybrid untagged vlan 1 and undo port hybrid tagged vlan 10 commands to restore the default configuration of the interface.

Other related questions:
Changing link types of interfaces on WLAN devices
You can change the type of an interface on a WLAN device as follows: - Change an access interface to a trunk or hybrid interface. [HUAWEI]interface gigabitethernet 0/0/1 [HUAWEI-GigabitEthernet0/0/1]undo port default vlan //Restore the default VLAN of the interface to VLAN 1. Run the display this command to check whether the interface has been added to other VLANs. If so, run the undo command delete the configurations. Change the interface type based on service requirements. [HUAWEI-GigabitEthernet0/0/1]port link-type hybrid // Set the interface type to hybrid. [HUAWEI-GigabitEthernet0/0/1]port link-type trunk //Set the interface type to trunk. - Change a trunk interface to an access interface or a hybrid interface. [HUAWEI]interface gigabitethernet 0/0/1 [HUAWEI-GigabitEthernet0/0/1]undo port trunk pvid vlan //Restore the default VLAN of the interface to VLAN 1. [HUAWEI-GigabitEthernet0/0/1]undo port trunk allow-pass vlan all //Deny packets from all VLANs. [HUAWEI-GigabitEthernet0/0/1]port trunk allow-pass vlan 1 //Allow packets from VLAN 1 to pass through. Run the display this command to check whether the interface has been added to other VLANs. If so, run the undo command delete the configurations. - Change the interface type based on service requirements. [HUAWEI-GigabitEthernet0/0/1]port link-type access //Set the interface type to access. [HUAWEI-GigabitEthernet0/0/1]port link-type hybrid //Set the interface type to hybrid. - Change a hybrid interface to a trunk interface or an access interface. [HUAWEI]interface gigabitethernet 0/0/1 [HUAWEI-GigabitEthernet0/0/1]undo port hybrid pvid vlan //Restore the default VLAN of the interface to VLAN 1. [HUAWEI-GigabitEthernet0/0/1]undo port hybrid vlan all //Deny packets from all VLANs. [HUAWEI-GigabitEthernet0/0/1]port hybrid untagged vlan 1 //Add the interface to VLAN 1 in untagged mode. Run the display this command to check whether the interface has been added to other VLANs. If so, run the undo command delete the configurations. Change the interface type based on service requirements. [HUAWEI-GigabitEthernet0/0/1]port link-type access //Set the interface type to access. [HUAWEI-GigabitEthernet0/0/1]port link-type trunk //Set the interface type to trunk. Note: The type of an interface can be successfully changed only when no VLAN configuration exists on the interface.

How to change the link type of an interface
The link type of an interface can be access, trunk, hybrid, or Dot1q-tunnel. The methods used to change the link type of an interface in different versions are different. In V200R005 and later versions, run the port link-type { access | trunk | hybrid | dot1q-tunnel } command and enter y or n as prompted. When the interface uses the default VLAN configuration, the system does not display any message. The link type of the interface is changed directly. When you enter y and press Enter, the device automatically deletes the non-default VLAN configuration of the interface and sets the link type of the interface to the specified one. When you enter n and press Enter, the device retains the current link type and VLAN configuration of the interface. Change the link type of the interface to hybrid. system-view [HUAWEI] interface GigabitEthernet0/0/1 [HUAWEI-GigabitEthernet0/0/1] port link-type hybrid Warning: This command will delete VLANs on this port. Continue?[Y/N]:y Info: This operation may take a few seconds. Please wait for a moment...done. In earlier versions of V200R005, an interface joins VLAN 1 by default, and the PVID of an interface is VLAN 1. You can run the port link-type { access | trunk | hybrid | dot1q-tunnel } command to change the link type of the interface. Change the link type of the interface to access. system-view [HUAWEI] interface GigabitEthernet0/0/1 [HUAWEI-GigabitEthernet0/0/1] port link-type access [HUAWEI-GigabitEthernet0/0/1] port default vlan 10 Change the link type of the interface to trunk. system-view [HUAWEI] interface GigabitEthernet0/0/1 [HUAWEI-GigabitEthernet0/0/1] port link-type trunk [HUAWEI-GigabitEthernet0/0/1] port trunk pvid vlan 10 [HUAWEI-GigabitEthernet0/0/1] port trunk allow-pass vlan 2 10 20 Change the link type of the interface to hybrid. system-view [HUAWEI] interface GigabitEthernet0/0/1 [HUAWEI-GigabitEthernet0/0/1] port link-type hybrid [HUAWEI-GigabitEthernet0/0/1] port hybrid pvid vlan 10 [HUAWEI-GigabitEthernet0/0/1] port hybrid untagged vlan 2 10 [HUAWEI-GigabitEthernet0/0/1] port hybrid tagged vlan 20 Change the link type of the interface to Dot1q-tunnel. system-view [HUAWEI] interface GigabitEthernet0/0/1 [HUAWEI-GigabitEthernet0/0/1] port link-type dot1q-tunnel [HUAWEI-GigabitEthernet0/0/1] port default vlan 10 When you change the link type of an interface that does not use the default VLAN configuration, the system displays the message "Error: Please renew the default configurations." You need to restore the default configuration of the interface, and then change the link type of the interface. Restore the default VLAN configuration of an access or Dot1q-tunnel interface. system-view [HUAWEI] interface gigabitethernet 0/0/1 [HUAWEI-GigabitEthernet0/0/1] undo port default vlan Restore the default VLAN configuration of a trunk interface. system-view [HUAWEI] interface gigabitethernet 0/0/1 [HUAWEI-GigabitEthernet0/0/1] undo port trunk pvid vlan [HUAWEI-GigabitEthernet0/0/1] undo port trunk allow-pass vlan all [HUAWEI-GigabitEthernet0/0/1] port trunk allow-pass vlan 1 Restore the default configuration of a hybrid interface. system-view [HUAWEI] interface gigabitethernet 0/0/1 [HUAWEI-GigabitEthernet0/0/1] undo port hybrid pvid vlan [HUAWEI-GigabitEthernet0/0/1] undo port hybrid vlan all [HUAWEI-GigabitEthernet0/0/1] port hybrid untagged vlan 1

I cannot log in to the AR router. How is this problem solved
1. By default, a user cannot log in to the AR router. You need to run the authentication-mode command in the VTY view to set the authentication mode. 2. To obtain more operation rights, run the user privilege level command in the VTY view to set the user level. 3. To enable the system to disconnect a user from the VTY interface when the timeout period expires, run the idle-timeout command in the VTY view to set the timeout period.

How do I configure the link type of an Eth-Trunk interface to Hybrid on S series switches
For S series switches (except the S1700), use the following method to configure the link type of an Eth-Trunk interface to Hybrid: # Configure Eth-Trunk 1 to allow packets from VLAN 10 and VLAN 20 to pass through. [HUAWEI] interface eth-trunk 1 [HUAWEI-Eth-Trunk1] port link-type hybrid [HUAWEI-Eth-Trunk1] port hybrid tagged vlan 10 20 [HUAWEI-Eth-Trunk1] quit

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