Does the GE optical LPU of the S7700&S9700 support 100M optical module

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The S7700&S9700's GE optical LPU supports both 100M optical modules and 1000M optical modules.
When a 100M optical module is used, you must run the speed 100 command on the interface to set the interface rate to 100 Mbit/s.
When using a GE optical module, an interface works at 1000 Mbit/s by default. If auto-negotiation is enabled on the interface, the interface speed cannot be set to 100 Mbit/s. If auto-negotiation is disabled, you can run the speed 100 command to set the interface speed to 100 Mbit/s.
The 100M optical interface can only use the 100M optical module, and the default interface rate is 100M.
When two optical interfaces are interconnected, they must use the same type of optical module.

Other related questions:
Does the GE optical LPU of the S12700 support 100M optical module
The S12700's GE optical LPU supports both 100M optical modules and 1000M optical modules. When a 100M optical module is used, you must run the speed 100 command on the interface to set the interface rate to 100 Mbit/s. When using a GE optical module, an interface works at 1000 Mbit/s by default. If auto-negotiation is enabled on the interface, the interface speed cannot be set to 100 Mbit/s. If auto-negotiation is disabled, you can run the speed 100 command to set the interface speed to 100 Mbit/s. When two optical interfaces are interconnected, they must use the same type of optical module.

Does the S7700&S9700 support non-Huawei optical modules
Use optical modules certified for Huawei switches. Non-certified optical modules cannot ensure transmission reliability and may affect service stability on the switch. Huawei is not responsible for any problem caused by non-certified optical modules and will not fix such problems.

Can I use a GE optical module on a 10GE optical port or a 100M optical module on a GE optical port
A high-speed optical port supports low-speed SFP, eSFP, and SPF+ modules. Generally, optical ports on a modular switch support low-speed optical modules. However, on a fixed switch, downlink optical ports support low-speed optical modules, but uplink optical ports do not. You can use a GE optical module on a 10GE optical port or a 100M optical module on a GE optical port. NOTE: Normally, you are not advised to install a low-speed optical module on a high speed optical port.

Can GE optical modules and GE electrical modules be installed on the same interface board of the S7700&S9700
GE optical modules and GE electrical modules can be installed on the same 1000M optical interface board of the S7700&S9700, but you must configure the O/E converter on the 1000M optical interface board. The 1000M optical interface board of the S7700&S9700 can use only the Huawei certified converter. When Non-Huawei O/E converters are installed on interfaces of the S7700&S9700, the interfaces still work as optical interfaces.

Does the S5700 interface support 100M optical modules
Fixed optical interfaces on the S5700-EI, S5700-SI, S5710-LI, and S5700-HI support 100M optical modules, while interfaces on extended front cards do not support 100M optical modules. Combo optical interfaces and 100/1000Base-X optical interfaces on the S5700-LI and S5700S-LI series switches support 100M optical modules. The S5710-EI series switches support 100M optical modules only on their combo optical interfaces. Combo optical interfaces and 100/1000Base-X optical interfaces on the S5720-EI series switches support 100M optical modules. In the S5720-HI series, only the S5720-32C-HI-24S-AC supports 100M optical modules on their 100/1000Base-X optical interfaces. The S5720-SI series switches support 100M optical modules only on their combo optical interfaces.

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