An electrical port of a WLAN device cannot go Up

20

1. After a 100M/1000M electrical port on a WLAN device is connected to a port on the peer device, configure the electrical port to work in auto-negotiation mode.
2. If the fault persists, check whether the port on the peer device works in auto-negotiation mode.
3. If the port still cannot go Up when a Huawei WLAN device is connected to a non-Huawei WLAN device, configure ports on both devices to work in forcible mode.
4. If the fault persists, perform a loopback test by connecting the electrical port to another port on the same card on the Huawei device using an Ethernet cable.
- If the electrical port goes Up, the peer device may be faulty. Contact the vendor of the peer device to rectify the fault.
- If the fault persists, connect the Ethernet cable to another port on the same card. If the electrical port still cannot go Up, the card is faulty. Contact Huawei technical support personnel to rectify the fault.

Other related questions:
An interface on a WLAN device fails to go Up
The possible causes are as follows: - The interface is manually shut down. - The power cable is faulty or the optical fiber does not meet requirements. - If the interface is a combo interface, the working mode may be incorrectly configured. - The duplex modes, rates, and negotiation modes are different on the connected interfaces. - The device hardware is faulty. Perform the following operations to rectify the fault: 1. If the interface is manually shut down, run the undo shutdown command in the interface view to enable it. 2. If the interface is an electrical interface or a combo interface working in electrical mode, check whether the power cable is faulty and securely connected on the local and remote devices. If the interface is an optical interface or a combo interface working in optical mode, check whether the type and length of the optical fiber, and the transmission distance supported by the optical module meet requirements. 3. If the interface is a combo interface, run the display this command to check whether the interface mode is correctly configured. - Run the combo-port auto or combo-port fiber command to set a combo interface to the auto or optical mode. - Run the combo-port auto or combo-port copper command to set a combo interface to the auto or electrical mode. 4. Run the display interface [ interface-type [ interface-number ] ] command to check the rate, duplex mode, and negotiation mode of the interface. In the command, interface-type and interface-number specify the interface type and number, respectively. - Check the Negotiation field. If ENABLE is displayed, the interface works in auto-negotiation mode. If DISABLE is displayed, the interface works in non-auto-negotiation mode. The two interfaces on the local and remote devices must work in the same negotiation mode (auto-negotiation or non-auto-negotiation mode). You can run the negotiation auto command in the interface view to configure an interface to work in auto-negotiation mode. If the fault persists, configure the interface to work in non-auto-negotiation mode, and forcibly set the same rate and duplex mode for the interconnected interfaces. - Check the Speed field. If the rates of the interfaces on the local and remote devices are different, run the speed command in the interface view to set the same rate for the two interfaces. - Check the Duplex field. If the duplex modes of the interfaces on the local and remote devices are different, run the duplex command in the interface view to set the same duplex mode for the two interfaces. 5. Perform a loopback test on the AC using an Ethernet cable to connect the interface to another interface. If the interface can go Up, the WLAN is working properly. The remote device may be faulty. Contact the vendor of the remote device to rectify the fault. - If an electrical interface or a combo interface working in electrical mode cannot go Up, change it to another interface. If an optical interface or a combo interface working in optical mode cannot go Up, replace the optical module.

Problem and solution when the electrical port of the firewall is down
What if the electrical port of the USG is not Up? 1. Check whether the faulty port is disabled. If yes, run the undo shutdown command to enable the port. 2. Remove the network cable: -Check whether the gold pin of the interface is bent or deviates. -Check whether the network cable is disconnected or damaged. -Check the type of the network cable. A GE electrical port fails to go Up if a network cable lower than category 5 cable is used. -A GE electrical interface may fail to go Up if some wires among the four wire pairs in the network cable are damaged. 3. Auto-negotiation shall be configured on both ports, and the rates and duplex modes on both ports shall be the same. 4. Incorrect MDI setting: -The current device can automatically identify straight cables or crossover cables, and MDI is usually not required.

Why the FR link protocol cannot go up
The possible cause is that the interface configurations on the two ends are incorrect, including: -The interface types must be DTE on one end and DCE on the other end. -The DLCI is not configured on the interface or the DLCI range setting is incorrect. The DLCI ranges from 16 to 1022. -The FR Local Management Interface (LMI) protocol types are different. -The FR encapsulation formats configured on the two ends are different. When the FR protocol is used as the encapsulation protocol, the default frame encapsulation format is IETF. -If the E1/T1 board is used, the interface TSs on the two ends do not completely match.

If you have more questions, you can seek help from following ways:
To iKnow To Live Chat
Scroll to top