How to check the rate of an interface of an AR router

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You can run the display interface ethernet brief command on an AR router to check the brief information about the Ethernet interface of the router, including the physical state, auto-negotiation method, duplex mode, rate, and average bandwidth utilization rate in the receiving and sending directions in the recent period of the interface.
In the output information displayed after the command is run, the Bandwidth column describes the bandwidth of the interface. In auto-negotiation mode, you can run the auto speed { 10 | 100 | 1000 }* command to configure the rate of the Ethernet interface. You can run the undo negotiation auto command to configure the Ethernet interface to be working in non-auto negotiation mode and run the speed { 10 | 100 | 1000 | 10000 } command to configure the rate of the Ethernet interface in the non-auto negotiation mode.

Other related questions:
How to check the bandwidth utilization rate of an interface on the AR router
Check the bandwidth utilization rate of an interface on an AR router as follows:

display interface brief //Check the incoming bandwidth utilization rate InUti and the outgoing bandwidth utilization rate OutUti.
......                               
InUti/OutUti: input utility/output utility                                      
Interface                   PHY   Protocol InUti OutUti   inErrors  outErrors 
GigabitEthernet0/0/0        up    up       0.01%  0.01%          0          0

InUti: Indicates the average bandwidth utilization rate of the interface in the receiving direction in the latest 300 seconds.
OutUti: Indicates the average bandwidth utilization rate of the interface in the sending direction in the latest 300 seconds.

How to check the configuration of the interface of an AR router
You can run the following commands to check the basic parameter configuration of an interface: - Run the display interface command to check the current running status of the interface, including the running status and basic configuration of the interface and the status of the packets forwarded by the interface. - Run the display interface brief command to check brief information about the status and configuration of the interface, including the physical state and protocol state of the interface, bandwidth utilization rate in transmitting and receiving directions in the recent period, and the number of error packets that are sent and received. - Run the display ip interface command to check the main configuration of the interface. - Run the display default-parameter interface command to check the default configuration of the interface. - Run the display interface description command to check the description of the interface. - Run the display interface counters { inbound | outbound } command to check the statistics of the packets sent or received by the physical interface.

How to adjust the serial interface rate of an AR routers
The serial interface rate of an AR router cannot be adjusted. For a serial interface running in DTE mode, you can run the virtualbaudrate command to configure the virtual baud rate of the serial interface in synchronous mode. For a serial interface running in DCE mode, you can run the baudrate command to configure the baud rate of the serial interface in synchronous mode. The baud rate determines the transmission rate of a line. Supported baud rate range varies with cable types. ? V.24DCE: 1200 bit/s - 64000 bit/s Baud rate ranges supported by V.35DCE, RS449DCE, and RS530DCE are described as follows: - The baud rate supported by 1SA/2SA interface cards ranges from 1200 bit/s to 2048000 bit/s. - The baud rate supported by 8SA interface cards ranges from 1200 bit/s to 8192000 bit/s. - The baud rate supported by the serial interface of AR2202-48FE ranges from 1200 bit/s to 8192000 bit/s. Supported virtual baud rate range varies with cable types. ? V.24DTE: 1200 bit/s - 64000 bit/s Virtual baud rate ranges supported by V.35DTE, X.21DTE, RS449DTE, and RS530DTE are described as follows: - Virtual baud rate supported by 1SA/2SA interface cards ranges from 1200 bit/s to 2048000 bit/s. - Virtual baud rate supported by 8SA interface cards ranges from 1200 bit/s to 8192000 bit/s. - Virtual baud rate supported by the serial interface of AR2202-48FE ranges from 1200 bit/s to 8192000 bit/s. Ensure that the baud rate configured on the DCE device (by running the baudrate command) is in accordance with the virtual baud rate configured on the DTE device (by running the virtualbaudrate command). Otherwise, packets may be discarded.

How to check the interface duplex mode of an AR router
Duplex modes: - Half-duplex: An interface can either receive or send data at one time. The maximum transmission distance is also limited. - Full duplex: An interface can receive and send data simultaneously. The maximum throughput can be twice of the interface rate. In addition, the transmission distance is not limited. You can run the display interface ethernet brief command to check the brief information about the Ethernet interface of a router, including the physical state, auto-negotiation method, duplex mode, rate, and average bandwidth utilization rate in the receiving and sending directions in the recent period of the interface. In the displayed information, the Duplex column indicates the duplex mode of the interface, which can be one of the following modes: ? full: Indicates that the interface works in full-duplex mode. ? half: Indicates that the interface works in half-duplex mode. ? In auto-negotiation mode, you can run the auto duplex command to configure the duplex mode of an interface. ? In non-auto negotiation mode, you can run the duplex command to configure the duplex mode of an interface.

Check the status of the E1 interface on the AR router
Check the status of the E1 interface on the AR router as follows: Run the display controller [ e1 [ interface-number ] ] command to check the information about the CE1/PRI interface, or run the display fe1 serial interface-number command to check the basic configuration and alarms of the E1-F interface. display controller e1 1/0/0 E1 1/0/0 current state : UP //Indicates that the state of the interface is Up. Description: HUAWEI, AR Series, E1 1/0/0 Interface Basic Configuration: //The following parameters must be consistent with those of the peer end (except for the clock) Work Mode is E1 Framed, Cable type is 120 Ohm balanced. //The work mode is E1, and the cable type is 120ohm twisted pair cable. Frame-format is NO-CRC4, Line Code is Hdb3. //The frame format is NO-CRC4, and the line code is Hdb3. Source Clock is Slave, Data-coding is Normal. //The clock status is slave, and the clock signal is not inverted. Idle code is 7E, Itf type is 7E, Itf number is 4. //The idle code and the type of characters filled between frames are 7e, and the number of characters filled between frames is 4. Loopback is Not Set. Alarm State: Receiver alarm state is Loss-of-Frame. Transmitter is sending remote alarm. Historical Statistics: //Perform error packet statistics. If the number of error packets increases, you can invert the clock. Data in current interval (0 seconds elapsed): 0 Line Code Violations, 0 Path Code Violations 0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins 0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs Total Data (last 24 hours): 0 Line Code Violations, 0 Path Code Violations 0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins 0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs

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