Huawei switch displays optical attenuation
You can view optical attenuation on Huawei switches by using the display transceiver commands to check TX/RX power and diagnostic information for each optical module.
Viewing Optical Module Information
To check optical attenuation, you need to monitor the transmit (TX) and receive (RX) optical power of the module. Huawei switches provide commands to display this information:
- Basic command:
display transceiver interface <interface-type> <interface-number>This shows the optical module type, link status, and basic TX/RX power readings . - Detailed diagnostic command:
display transceiver interface <interface-type> <interface-number> verboseThis command provides digital diagnostic monitoring (DMM) data, including TX power, RX power, voltage, current, and temperature, which can be used to calculate optical attenuation . - Example for a GigabitEthernet port:
display transceiver interface GigabitEthernet0/0/1 verboseOutput includes:- TX Power: Power transmitted by the module
- RX Power: Power received from the remote device
- Attenuation: Can be inferred as the difference between TX and RX power along the fiber link .
Interpreting Optical Attenuation
- Normal ranges: Each optical module has a specified TX/RX power range. If RX power is significantly lower than expected, it indicates high attenuation or fiber issues .
- Causes of high attenuation:
- Long fiber distance exceeding module specifications
- Dirty or damaged connectors
- Mismatched fiber type (single-mode vs multimode)
- Using non-Huawei-certified optical modules, which may cause abnormal readings or link failures .
Additional Tips
- Ensure the fiber type matches the optical module (single-mode with single-mode, multimode with multimode) to avoid excessive attenuation .
- Use
display interface <interface>to check port status and confirm the link is up before analyzing optical power . - For troubleshooting, perform a loopback test by connecting the fiber jumper to the same module to isolate module or fiber issues . By regularly monitoring TX/RX power and calculating the difference, you can effectively determine the optical attenuation and maintain optimal fiber link performance on Huawei switches.
Information Analyzing the Optical Power
The optical power attenuates after being transmitted through the optical components or optical fibers. Normally, the actual
Information Huawei Switches Viewing Optical Port Receiving and Sending
Use the command display transceiver to view the optical module information of all optical ports, and use the command
Information What Is an Optical Module and Its FAQs (V200)
What Is an Optical Module and Its FAQs (V200) Describes what an optical module is and FAQs, including the fundamentals,
Information Huawei MiniFTTO Optical Power Calculator
Why do I need to calculate the optical power? A PON network uses an optical fiber for upstream and downstream bidirectional
Information How To View Optical Transceiver Information On Huawei Switches
Optical transceivers are widely applied in switches, network cards, routers and other communication devices.
Information Using the OTDR to Locate Abnormal Attenuation Points on the Optical
The optical time domain reflectometer (OTDR) is usually used for locating abnormal attenuation points on the optical line.
Information Optical Module Solutions for Huawei S5700/S5720 Series Switches
This article summarizes several solutions for using optical modules with switches and common problems encountered
Information Huawei S Series Campus Switches Troubleshooting Guide (V100 and
How Do I View the Transmit and Receive Power of an Optical Module? Run the display transceiver verbose command. In the
Information How to View Optical Module Parameters
Using a Command If an optical module is installed in a running device, you can run the display transceiver command
Information Checking the Working Modes
Procedure Run the display transceiver interface interface-type interface-number verbose command to view the optical
Information Displaying Optical Module Information
Displaying Optical Module Information You can use the display commands to view information about the optical
Information Configuring Attributes for an Optical Interface
A 40GE interface cannot be split if it has been added to a stack interface. 10GE interfaces split from 40GE optical
Information Displaying Optical Module Information
The system may fail to obtain information about non-Huawei-certified switch optical modules or obtain incorrect information. You are
Information How Do I Query the Optical Power of an Interface?
How Do I Query the Optical Power of an Interface? You can run the display interface [ interface-type interface-number
Information how to display power of optical module
Let''s take Huawei''s S3328TP-SI switch as an example. This switch has 2 combo ports, which can be changed either
Information Teach you to read the DDM information of the optical module on the
Execute the command, display transceiver diagnosis interface [ interface-type interface-number ], display optical
Information Troubleshooting for Optical Modules on Huawei Switch
Check whether the optical module is Huawei-certified. If it is not certified by Huawei, replace it with a
Information Checking the Optical Module Type
For the Huawei-certified optical modules, Huawei has added Huawei logo and identifier and changed the vendor information in the
Information Checking TX / RX optical power for Huawei Switches and Routers
Here is an example on how to query or display optical power of an interface in a Huawei Router. This is tested using NetEngine40E
Information Huawei Optical Switch View Optical Module Commands
Taking the Huawei 5700 series switches as an example, the commands to view optical module information are as
Information Optical Module Troubleshooting
If there is a Huawei logo on the label, the optical module has been certified for Huawei data center switches. If not,
Information How to Troubleshoot transceiver issue in Huawei switch/router/devices
The Issue We want to troubleshoot transceiver on Huawei router, Huawei switch, Huawei systems. The Answer 1
Information Displaying Optical Module Information
Run the display transceiver diagnosis interface [ interface-type interface-number ] command to view diagnostic information about a
Information Optical Module Solutions for Huawei S5700/S5720 Series Switches
When using switches, we may encounter many confusions, such as what types of optical modules are needed for
Information Huawei Switch Optical Attenuation Information
Optical modules are widely used in switches, network interface cards (NICs), routers, and other communication devices. Identify a
Information display interface transceiver
The display interface transceiver command displays information about the optical module on the interface of the device.
Information How to check optical attenuation on a Huawei S5320 switch
Execute the command, display transceiver [ interface interface-type interface-number | slot-id ] [ verbose ] to check the optical
Information Introduction of Optical Modules on Huawei Switches
If an optical module is installed in a running switch, you can run the display transceiver command to view parameters of the optical
Information Displaying Optical Module Information
To determine whether optical modules delivered for Huawei S switches before January 1, 2016 are certified ones, contact Huawei
Information Huawei Switch Optical Attenuation Information
A switch must use optical or copper modules that have been certified for use on Huawei S switches. Non-certified optical or copper
Information Checking the optical attenuation of Huawei switches
Here is an example on how to query or display optical power of an interface in a Huawei Router. This is tested using NetEngine40E
Information Displaying Optical Module Information
Obtain the electronic label of the optical module and contact Huawei technical support personnel to confirm whether it is a Huawei
Information Typical Troubleshooting Cases of Optical Module
Procedure Check whether the optical modules are Huawei-certified ones. If not, contact the supplier of the optical modules. If
Information Displaying Optical Module Information
A switch must use optical or copper modules that have been certified for use on Huawei switches. Non-certified optical or copper