Rates on all interfaces working in auto-negotiation mode are different on a WLAN device

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When all interfaces of a WLAN device work in auto-negotiation mode, the negotiated rate is the maximum rate supported by the interfaces. However, an interface may negotiate a rate of 100 Mbit/s with a peer interface, while other interfaces negotiate a rate of 1000 Mbit/s with peer interfaces.
The possible cause is that the Ethernet cable connecting the GE interfaces on the local and peer devices cannot support a high working rate due to deterioration or RJ-45 connector faults. Therefore, the negotiated rate can only be 100 Mbit/s or 10 Mbit/s.
In this case, replace the Ethernet cable.

Other related questions:
Can two interface communicate with each other if one interface works in auto-negotiation mode and the other works in forcible mode
This configuration is not recommended. When this configuration is used, the interface working in auto-negotiation mode changes to half-duplex state according to the auto-negotiation requirements. This reduces the network utilization efficiency and may cause other problems. It is strongly recommended that the local and remote interfaces work in the same mode. That is, they both work in auto-negotiation mode or forcible mode.

Modify attributes of interfaces on the S1728GWR-4P switch
Modify the attributes (including the auto-negotiation mode, manual setting of port rate, full duplex mode, and traffic control) of an interface on an S1728GWR-4P switch using either of the following methods: 1. Port-based configuration: a. Choose Interface > Port > General. b. Select Configure by Port Range from the Action drop-down list box. Configure parameters of interfaces within a range in a batch. c. After completing the configuration, click Apply. The configuration takes effect immediately. To check status of each interface, choose Interface > Port > General and select Show Information from the Action drop-down list box.�?2. Port list based configuration: a. Choose Interface > Port > General. b. Select Configure by Port List from the Action drop-down list box. Configure parameters of each interface. c. After completing the configuration, click Apply. The configuration takes effect immediately. To check status of each interface, choose Interface > Port > General and select Show Information from the Action drop-down list box.

Can I configure parameters such as rate, auto-negotiation mode, and flow control on interfaces of CE series switches
You can use Interface Query Tool to obtain interface attributes such as the default auto-negotiation status, rate, and support for the auto-negotiation and flow control auto-negotiation configuration based on the interface type and connection medium. To use the interface query tool for CE series switches, visit http://support.huawei.com/onlinetoolsweb/DC/en/interface_query.html.

Modify attributes of interfaces on the S1700-FR or S1700-GFR switch
Modify the attributes an interface on an S1700-FR or S1700-GFR switch as follows: 1. Choose Interface Management > Ethernet Interface and click the Basic Attributes tab. 2. Select an interface from the interface list, click Configure, and configure the interface state, including the auto-negotiation, rate, duplex mode, and traffic control. 3. Configure other parameters of the interface. 4. After completing the configuration, click Apply. To check the interface state that takes effect, access the Basic Attributes page. Note: a. When configuring an interface to work at a specified rate or in duplex mode, disable the auto-negotiation function of the interface. b. When interfaces on two connected switches work in auto-negotiation mode, the switches choose the highest performance transmission mode based on capabilities of both interfaces. c. The rate and duplex mode of GE SFP interfaces are 1000 Mbit/s and full duplex mode, respectively.

Can two electrical interfaces communicate normally when one interface is forcibly configured to work in full duplex mode and the other work in auto-negotiation mode
According to IEEE 802.3, when electrical interface A in auto-negotiation mode connects to electrical interface B that is forcibly configured to work in full duplex mode, the two interfaces can go Up. However, interface A starts to work in half-duplex mode, and interface B still works in full duplex mode. In this case, the interface working in half-duplex mode encounters error packets and packet loss due to collision of the physical link. Therefore, it is strongly recommended that you configure the interconnected electrical interfaces to work in the same mode. That is, enable auto-negotiation mode on both interfaces or configure the interfaces to work at the same speed and duplex mode by using the following commands: system-view [HUAWEI] interface gigabitethernet 0/0/1 [HUAWEI-GigabitEthernet0/0/1] undo negotiation auto [HUAWEI-GigabitEthernet0/0/1] speed 100 [HUAWEI-GigabitEthernet0/0/1] duplex full

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